1
|
Chae SH, Lee H, Nam K. Mechanistic study of visible light driven photocatalytic degradation of clofibric acid using Fe-based metal organic frameworks (MOFs). CHEMOSPHERE 2024; 359:142365. [PMID: 38763402 DOI: 10.1016/j.chemosphere.2024.142365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
Although a series of past studies proved the potential usage of Fe-based metal-organic frameworks (MOFs) as photocatalysts, there remains a knowledge gap of the photocatalytic mechanism stemming from the challenge to separate the simultaneous sorption and photocatalytic degradation. Thus, this article aimed to suggest a novel approach by desorbing target molecules during photocatalysis to excavate the underlying mechanisms of sorption and photocatalytic degradation. In this study, two Fe-based MOFs, MIL-101(Fe) and MIL-101(Fe)-NH2, were selected to remove clofibric acid under visible light irradiation. Prior to photocatalysis, sorption mechanism was uncovered based on the sorption kinetic, isotherm, thermodynamic interpretation, and of its dependence on solution pH. The results inferred that the primary sorption mechanism was through the π-π interaction between the benzene ring of clofibric acid and the organic ligand of Fe-based MOFs. Based on these results, photocatalytic mechanism could be independently or jointly assessed during the photocatalytic degradation of clofibric acid. Subsequently, the application of the Tauc method and XPS spectra revealed that the bandgap structure of Fe-based MOFs had the potential to oxidize clofibric acid by producing ROS through the electron excitation upon visible-light illumination. On top of that, the amine functionalization of Fe-based MOF altered the structural moiety that led to an additional strong acid-base interaction with clofibric acid but a decrease in the bandgap limiting the ROS production during photocatalytic activity.
Collapse
Affiliation(s)
- Seung Hee Chae
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hosub Lee
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Kyoungphile Nam
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
| |
Collapse
|
2
|
Erk N, Kurtay G, Bouali W, Sakal ZG, Genç AA, Erbaş Z, Soylak M. Electrochemical Detection of Melphalan in Biological Fluids Using a g-C 3N 4@ND-COOH@MoSe 2 Modified Electrode Complemented by Molecular Docking Studies with Cellular Tumor Antigen P53. ACS OMEGA 2024; 9:21058-21070. [PMID: 38764632 PMCID: PMC11097377 DOI: 10.1021/acsomega.4c00558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/04/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
Melphalan (Mel) is a potent alkylating agent utilized in chemotherapy treatments for a diverse range of malignancies. The need for its accurate and timely detection in pharmaceutical preparations and biological samples is paramount to ensure optimized therapeutic efficacy and to monitor treatment progression. To address this critical need, our study introduced a cutting-edge electrochemical sensor. This device boasts a uniquely modified electrode crafted from graphitic carbon nitride (g-C3N4), decorated with activated nanodiamonds (ND-COOH) and molybdenum diselenide (MoSe2), and specifically designed to detect Mel with unparalleled precision. Our rigorous testing employed advanced techniques such as cyclic voltammetry and differential pulse voltammetry. The outcomes were promising; the sensor consistently exhibited a linear response in the range of 0.5 to 12.5 μM. Even more impressively, the detection threshold was as low as 0.03 μM, highlighting its sensitivity. To further enhance our understanding of Mel's biological interactions, we turned to molecular docking studies. These studies primarily focused on Mel's interaction dynamics with the cellular tumor antigen P53, revealing a binding affinity of -5.0 kcal/mol. A fascinating observation was made when Mel was covalently conjugated with nanodiamond-COOH (ND-COOH). This conjugation resulted in a binding affinity that surged to -10.9 kcal/mol, clearly underscoring our sensor's superior detection capabilities. This observation also reinforced the wisdom behind incorporating ND-COOH in our electrode design. In conclusion, our sensor not only stands out in terms of sensitivity but also excels in selectivity and accuracy. By bridging electrochemical sensing with computational insights, our study illuminates Mel's intricate behavior, driving advancements in sensor technology and potentially revolutionizing cancer therapeutic strategies.
Collapse
Affiliation(s)
- Nevin Erk
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
| | - Gülbin Kurtay
- Hacettepe University, Faculty of Sciences, Department of Chemistry, 06800 Ankara, Turkey
| | - Wiem Bouali
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
- Ankara University, Graduate School of Health Sciences, 06110 Ankara, Turkey
| | - Zeyneb Gülsüm Sakal
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
- Ankara University, Graduate School of Health Sciences, 06110 Ankara, Turkey
| | - Asena Ayşe Genç
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
- Ankara University, Graduate School of Health Sciences, 06110 Ankara, Turkey
| | - Zeliha Erbaş
- Yozgat Bozok University, Science and Technology Application and Research Center, 66200 Yozgat, Turkey
- Erciyes University, Technology Research & Application Center (TAUM), 38039 Kayseri, Turkey
| | - Mustafa Soylak
- Erciyes University, Technology Research & Application Center (TAUM), 38039 Kayseri, Turkey
- Turkish Academy of Sciences (TUBA), Çankaya, Ankara 06670, Turkey
| |
Collapse
|
3
|
Janani FZ, Khiar H, Taoufik N, Sadiq M, Favier L, Ezzat AO, Elhalil A, Barka N. Mn 3O 4/ZnO-Al 2O 3-CeO 2 mixed oxide catalyst derived from Mn-doped Zn-(Al/Ce)-LDHs: efficient visible light photodegradation of clofibric acid in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:25373-25387. [PMID: 38472583 DOI: 10.1007/s11356-024-32841-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 03/06/2024] [Indexed: 03/14/2024]
Abstract
Mn3O4/ZnO-Al2O3-CeO2 catalyst was synthesized through a solid-state process from a 3% Mn-doped Zn-(Al/Ce) layered double hydroxide structure. Detailed structural and optical characterization using XRD, FTIR, UV-visible DRS, and TEM was conducted. By investigating clofibric acid (CA) degradation in aqueous solution, Mn3O4/ZnO-Al2O3-CeO2 photocatalytic activity was evaluated. The results show that the heterostructure mixed oxide catalyst has excellent CA photodegradation performance. Further, the characterization reveals that such photocatalytic efficiency can be attributed to two facts that are summarized in the optical properties and the synergic effect between Mn and Ce elements. The sample demonstrated a narrow band gap of 2.34 eV based on DRS. According to the experimental results of the photodegradation, after 120 min of irradiation, the photocatalyst exhibited the highest photocatalytic activity, with a degradation efficiency of 93.6%. Optimization outcomes indicated that maximum degradation efficiency was attained under the following optimum conditions: catalyst dose of 0.3 g/L, initial dye concentration of 20 mg/L, pH 3.86, and 120 min of reaction time. The quenching test demonstrates that photogenerated electrons and superoxide radicals are the most powerful reactive species. The catalyst could be useful in decreasing the photogenerated charges recombination, which offers more redox cycles simultaneously during the catalytic process. The strong Ce-Mn interaction and the formation of their different oxidation states offer a high degradation efficiency by facilitating electron-hole transfer. The introduction of Mn3O4 in the catalyst can effectively improve the visible absorption properties, which are beneficial in the photocatalytic process by reaching a high catalytic efficiency at a low cost.
Collapse
Affiliation(s)
- Fatima Zahra Janani
- Multidisciplinary Research and Innovation Laboratory, Sultan Moulay Slimane University of Beni Mellal, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Habiba Khiar
- Multidisciplinary Research and Innovation Laboratory, Sultan Moulay Slimane University of Beni Mellal, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Nawal Taoufik
- Multidisciplinary Research and Innovation Laboratory, Sultan Moulay Slimane University of Beni Mellal, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Mhamed Sadiq
- Multidisciplinary Research and Innovation Laboratory, Sultan Moulay Slimane University of Beni Mellal, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Lidia Favier
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000, Rennes, France
| | - Abdelrahman Osama Ezzat
- Department of Chemistry, College of Sciences, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Alaâeddine Elhalil
- Laboratory of Process and Environmental Engineering, Higher School of Technology, Hassan II University of Casablanca, Casablanca, Morocco
| | - Noureddine Barka
- Multidisciplinary Research and Innovation Laboratory, Sultan Moulay Slimane University of Beni Mellal, FP Khouribga, BP.145, 2500, Khouribga, Morocco.
| |
Collapse
|
4
|
Binazadeh M, Rasouli J, Sabbaghi S, Mousavi SM, Hashemi SA, Lai CW. An Overview of Photocatalytic Membrane Degradation Development. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093526. [PMID: 37176408 PMCID: PMC10180107 DOI: 10.3390/ma16093526] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/09/2023] [Accepted: 03/27/2023] [Indexed: 05/15/2023]
Abstract
Environmental pollution has become a worldwide issue. Rapid industrial and agricultural practices have increased organic contaminants in water supplies. Hence, many strategies have been developed to address this concern. In order to supply clean water for various applications, high-performance treatment technology is required to effectively remove organic and inorganic contaminants. Utilizing photocatalytic membrane reactors (PMRs) has shown promise as a viable alternative process in the water and wastewater industry due to its efficiency, low cost, simplicity, and low environmental impact. PMRs are commonly categorized into two main categories: those with the photocatalyst suspended in solution and those with the photocatalyst immobilized in/on a membrane. Herein, the working and fouling mechanisms in PMRs membranes are investigated; the interplay of fouling and photocatalytic activity and the development of fouling prevention strategies are elucidated; and the significance of photocatalysis in membrane fouling mechanisms such as pore plugging and cake layering is thoroughly explored.
Collapse
Affiliation(s)
- Mojtaba Binazadeh
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71557-13876, Iran
| | - Jamal Rasouli
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71557-13876, Iran
| | - Samad Sabbaghi
- Department of Nano-Chemical Engineering, Faculty of Advanced Technologies, Shiraz University, Shiraz 71557-13876, Iran
| | - Seyyed Mojtaba Mousavi
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan
| | - Seyyed Alireza Hashemi
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre, University Malaya, Kuala Lumpur 50603, Malaysia
| |
Collapse
|
5
|
Lv P, Tao Y, Zhang N, Yang Y, Wu X, Li QX, Hua R. Cyanidin-3-O-glucoside mediated photodegradation of profenofos in water. CHEMOSPHERE 2022; 308:136170. [PMID: 36037950 DOI: 10.1016/j.chemosphere.2022.136170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/17/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Flavonoids can sensitize and quench the photolysis of pesticides such as profenofos in surface water. Profenofos has been frequently detected in surface and underground water. The present study investigated the photolysis of profenofos under various conditions, including natural and artificial light illumination, with and without cyanidin-3-O-glucoside (Cy3G) and in pure and surface water. The degradation half-lives of profenofos in distilled water with 10 equivalents Cy3G of profenofos were 21.7 min, 9.5 h, 12.5 h and 180 h under high-pressure mercury light, UV, Xenon lamp and solar irradiation, respectively, while those without Cy3G were 8.1 min, 6.1 h, 8.2 h and 89.9 h, respectively. The photolysis rate of profenofos under sunlight and artificial light was reduced by 1.5-2.7 times due to Cy3G, compared to the Cy3G-free control. Under sunlight irradiation, the effects of Cy3G on profenofos photolysis were larger than those under high-pressure mercury lamp irradiation. Cy3G also significantly reduced the photolysis rate of profenofos under different pH conditions and in natural water. In addition, Cy3G exhibited a significant capacity of scavenging hydroxyl radicals and quenching 1O2 in water. The effect of Cy3G on profenofos photolysis was demonstrated through their interrelations in the natural environment. These findings can help understanding of the effect of flavonoids on profenofos photolysis and are of significance for predicting the degradation kinetics of profenofos and accurately assessing its potential biological impacts.
Collapse
Affiliation(s)
- Pei Lv
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Yumeng Tao
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Nan Zhang
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Yawei Yang
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Xiangwei Wu
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, 96822, United States.
| | - Rimao Hua
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment, Anhui Agricultural University, Hefei, Anhui, 230036, China.
| |
Collapse
|
6
|
Hussein Abdurahman M, Zuhairi Abdullah A, Da Oh W, Fazliani Shopware N, Faisal Gasim M, Okoye P, Ul-Hamid A, Rahman Mohamed A. Tunable band structure of synthesized carbon dots modified graphitic carbon nitride/bismuth oxychlorobromide heterojunction for photocatalytic degradation of tetracycline in water. J Colloid Interface Sci 2022; 629:189-205. [PMID: 36067598 DOI: 10.1016/j.jcis.2022.08.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/21/2022] [Accepted: 08/27/2022] [Indexed: 11/28/2022]
Abstract
In this study, graphitic carbon nitride (CN) decorated with carbon quantum dot (CQD) and bismuth oxychlorobromide (BiOClxBr1-x) was fabricated by calcination and hydrothermal methods. The morphology characterization of the synthesized photocatalyst revealed that CQD and BiOClxBr1-x solid solution were deposited on the CN surface. CQD served as the electron reservoir, which could reduce the recombination of electron-hole pairs, thus improving the overall photocatalytic performance. The synergistic effect of 1 wt% CQDs and BiOCl0.75Br0.25 markedly improved the interfacial charge transfer efficiency and light-harvesting capacity of the composite. The degradation rate of tetracycline (TC) over CN/CQD/BiOCl0.75Br0.25 was 83.4 % after 30 min and favorable stability with near-initial capacity under visible light irradiation. Meanwhile, the reaction mechanism of the photocatalytic performance was demonstrated by the analysis of the surface adsorption sites, efficient utilization of visible light, and charge carrier transfer. The degradation by-products and potential degradation pathways were also analyzed using liquid chromatography-mass spectrometry. Finally, the toxicity estimation software tool (T.E.S.T) analysis indicated that the toxicity of most intermediates was lower than TC. This work provideed a strategy for fabricating visible light (VL) photocatalyst with excellent photocatalytic activity, furnishing a new insight for interface charge transfer.
Collapse
Affiliation(s)
- Mohamed Hussein Abdurahman
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia
| | - Ahmad Zuhairi Abdullah
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia.
| | - Wen Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Noor Fazliani Shopware
- Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan, Kampus Jeli, Kelantan, Malaysia
| | - Mohamed Faisal Gasim
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Patrick Okoye
- Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Temixco, Morelos, CP 62580, Mexico
| | - Anwar Ul-Hamid
- Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Abdul Rahman Mohamed
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia
| |
Collapse
|
7
|
Rego RM, Kurkuri MD, Kigga M. A comprehensive review on water remediation using UiO-66 MOFs and their derivatives. CHEMOSPHERE 2022; 302:134845. [PMID: 35525446 DOI: 10.1016/j.chemosphere.2022.134845] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/21/2022] [Accepted: 05/01/2022] [Indexed: 05/21/2023]
Abstract
Metal-organic frameworks (MOFs) are a versatile class of porous materials offering unprecedented scope for chemical and structural tunability. On account of their synthetic versatility, tunable and exceptional host-guest chemistry they are widely utilized in many prominent water remediation techniques. However, some of the MOFs present low structural stabilities specifically in aqueous and harsh chemical conditions which impedes their potential application in the field. Among the currently explored MOFs, UiO-66 exhibits structural robustness and has gained immense scientific popularity. Built with a zirconium-terephthalate framework, the strong Zr-O bond coordination contributes to its stability in aqueous, chemical, and thermal conditions. Moreover, other exceptional features such as high surface area and uniform pore size add to the grand arena of porous nanomaterials. As a result of its stable nature, UiO-66 offers relaxed admittance towards various functionalization, including synthetic and post-synthetic modifications. Consequently, the adsorptive properties of these highly stable frameworks have been modulated by the addition of various functionalities. Moreover, due to the presence of catalytically active sites, the use of UiO-66 has also been extended towards the degradation of pollutants. Furthermore, to solve the practical handling issues of the crystalline powdered forms, UiO-66 has been incorporated into various membrane supports. The incorporation of UiO-66 in various matrices has enhanced the rejection, permeate flux, and anti-fouling properties of membranes. The combination of such exceptional characteristics of UiO-66 MOF has expanded its scope in targeted purification techniques. Subsequently, this review highlights the role of UiO-66 in major water purification techniques such as adsorption, photocatalytic degradation, and membrane separation. This comprehensive review is expected to shed light on the existing developments and guide the inexhaustible futuristic scope of UiO-66 MOF.
Collapse
Affiliation(s)
- Richelle M Rego
- Centre for Nano and Material Sciences, JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Mahaveer D Kurkuri
- Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India.
| | - Madhuprasad Kigga
- Centre for Nano and Material Sciences, JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India.
| |
Collapse
|
8
|
Janani FZ, Khiar H, Taoufik N, Elhalil A, Sadiq M', Mansouri S, Barka N. ZnO-Zn 2TiO 4 heterostructure for highly efficient photocatalytic degradation of pharmaceuticals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022:1-14. [PMID: 36044150 PMCID: PMC9430018 DOI: 10.1007/s11356-022-22791-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
In this study, ZnO-Zn2TiO4 (ZTM) material was prepared through a novel synthesis method based on a ultrasound-assisted polyol-mediated process followed by calcination at a different temperature. Physical features of the samples were studied by using various analysis techniques including XRD, FT-IR, SEM/EDX, pHPZC, and UV-Vis DRS. Subsequently, the materials were employed as catalysts for the photocatalytic degradation of clofibric acid as a model pharmaceutical contaminant. The photocatalytic performance was evaluated under different conditions of calcination temperature, catalyst dosage, starting concentration, and initial pH of clofibric acid solution. The finding results revealed that hexagonal-tetragonal phases of ZnO-Zn2TiO4 calcined at 600 °C (ZTM-600) with an average crystallite size of 97.8 Å exhibited the best degradation efficiency (99%). The primary bands characteristic of ZnO and Zn2TiO4 were displayed by FT-IR analysis and the UV-visible DRS confirms the larger absorption capacity in UV-visible regions. The photogenerated electrons are the powerful reactive species involved in clofibric acid photodegradation process. This study shows a promising photocatalyst and provides new sight to rational design the facets of photocatalysis process for enhanced photocatalytic performances and effective wastewater treatment.
Collapse
Affiliation(s)
- Fatima Zahra Janani
- Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Habiba Khiar
- Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Nawal Taoufik
- Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Alaâeddine Elhalil
- Laboratory of Process and Environmental Engineering, Higher School of Technology, Hassan II University of Casablanca, Casablanca, Morocco
| | - M 'hamed Sadiq
- Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP.145, 2500, Khouribga, Morocco
| | - Said Mansouri
- Materials Science Energy and Nanoengineering Department (MSN), VI Polytechnic University (UM6P), Lot 660-Hay Moulay Rachid, 43150, Benguerir, Mohammed, Morocco
| | - Noureddine Barka
- Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP.145, 2500, Khouribga, Morocco.
| |
Collapse
|
9
|
Ren W, Cheng C, Shao P, Luo X, Zhang H, Wang S, Duan X. Origins of Electron-Transfer Regime in Persulfate-Based Nonradical Oxidation Processes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:78-97. [PMID: 34932343 DOI: 10.1021/acs.est.1c05374] [Citation(s) in RCA: 206] [Impact Index Per Article: 103.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Persulfate-based nonradical oxidation processes (PS-NOPs) are appealing in wastewater purification due to their high efficiency and selectivity for removing trace organic contaminants in complicated water matrices. In this review, we showcased the recent progresses of state-of-the-art strategies in the nonradical electron-transfer regimes in PS-NOPs, including design of metal and metal-free heterogeneous catalysts, in situ/operando characterization/analytical techniques, and insights into the origins of electron-transfer mechanisms. In a typical electron-transfer process (ETP), persulfate is activated by a catalyst to form surface activated complexes, which directly or indirectly interact with target pollutants to finalize the oxidation. We discussed different analytical techniques on the fundamentals and tactics for accurate analysis of ETP. Moreover, we demonstrated the challenges and proposed future research strategies for ETP-based systems, such as computation-enabled molecular-level investigations, rational design of catalysts, and real-scenario applications in the complicated water environment. Overall, this review dedicates to sharpening the understanding of ETP in PS-NOPs and presenting promising applications in remediation technology and green chemistry.
Collapse
Affiliation(s)
- Wei Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA5005, Australia
| | - Cheng Cheng
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
| | - Penghui Shao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA5005, Australia
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA5005, Australia
| |
Collapse
|
10
|
Pan LY, Ding YF, Yin SF, Cai MQ. First-principles calculations for determining the mechanism of the photocatalytic selective oxidation of toluene to benzaldehyde on the g-C 3N 4 catalyst. NEW J CHEM 2022. [DOI: 10.1039/d2nj02153f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photocatalytic oxidation of toluene (TL) to benzaldehyde (BAD) has the advantages of mild reaction conditions, green chemistry, and high selectivity of the target products.
Collapse
Affiliation(s)
- Ling-Yu Pan
- School of Physics and Electronics Science, Hunan University, Changsha 410082, P. R. China
| | - Yu-Feng Ding
- School of Physics and Electronics Science, Hunan University, Changsha 410082, P. R. China
| | - Shuang-Feng Yin
- Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide Emissions, Hunan University, Changsha 410082, Hunan Province, P. R. China
| | - Meng-Qiu Cai
- School of Physics and Electronics Science, Hunan University, Changsha 410082, P. R. China
| |
Collapse
|
11
|
Najafishirtari S, Friedel Ortega K, Douthwaite M, Pattisson S, Hutchings GJ, Bondue CJ, Tschulik K, Waffel D, Peng B, Deitermann M, Busser GW, Muhler M, Behrens M. A Perspective on Heterogeneous Catalysts for the Selective Oxidation of Alcohols. Chemistry 2021; 27:16809-16833. [PMID: 34596294 PMCID: PMC9292687 DOI: 10.1002/chem.202102868] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 01/15/2023]
Abstract
Selective oxidation of higher alcohols using heterogeneous catalysts is an important reaction in the synthesis of fine chemicals with added value. Though the process for primary alcohol oxidation is industrially established, there is still a lack of fundamental understanding considering the complexity of the catalysts and their dynamics under reaction conditions, especially when higher alcohols and liquid-phase reaction media are involved. Additionally, new materials should be developed offering higher activity, selectivity, and stability. This can be achieved by unraveling the structure-performance correlations of these catalysts under reaction conditions. In this regard, researchers are encouraged to develop more advanced characterization techniques to address the complex interplay between the solid surface, the dissolved reactants, and the solvent. In this mini-review, we report some of the most important approaches taken in the field and give a perspective on how to tackle the complex challenges for different approaches in alcohol oxidation while providing insight into the remaining challenges.
Collapse
Affiliation(s)
- Sharif Najafishirtari
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenCarl-Benz-Straße 19947057DuisburgGermany
| | - Klaus Friedel Ortega
- Institute of Inorganic ChemistryKiel UniversityMax-Eyth-Straße 224118KielGermany
| | - Mark Douthwaite
- Cardiff Catalysis InstituteCardiff UniversityCF10 3ATCardiffUnited Kingdom
| | - Samuel Pattisson
- Cardiff Catalysis InstituteCardiff UniversityCF10 3ATCardiffUnited Kingdom
| | | | - Christoph J. Bondue
- Faculty of Chemistry and BiochemistryLab. of Electrochemistry & Nanoscale MaterialsRuhr-University BochumUniversitätsstraße. 150, ZEMOS 1.4144780BochumGermany
| | - Kristina Tschulik
- Faculty of Chemistry and BiochemistryLab. of Electrochemistry & Nanoscale MaterialsRuhr-University BochumUniversitätsstraße. 150, ZEMOS 1.4144780BochumGermany
| | - Daniel Waffel
- Faculty of Chemistry and BiochemistryLab. of Industrial ChemistryRuhr-University BochumUniversitätsstraße 150, NBCF 04 / 69044780BochumGermany
| | - Baoxiang Peng
- Faculty of Chemistry and BiochemistryLab. of Industrial ChemistryRuhr-University BochumUniversitätsstraße 150, NBCF 04 / 69044780BochumGermany
| | - Michel Deitermann
- Faculty of Chemistry and BiochemistryLab. of Industrial ChemistryRuhr-University BochumUniversitätsstraße 150, NBCF 04 / 69044780BochumGermany
| | - G. Wilma Busser
- Faculty of Chemistry and BiochemistryLab. of Industrial ChemistryRuhr-University BochumUniversitätsstraße 150, NBCF 04 / 69044780BochumGermany
| | - Martin Muhler
- Faculty of Chemistry and BiochemistryLab. of Industrial ChemistryRuhr-University BochumUniversitätsstraße 150, NBCF 04 / 69044780BochumGermany
| | - Malte Behrens
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenCarl-Benz-Straße 19947057DuisburgGermany
- Institute of Inorganic ChemistryKiel UniversityMax-Eyth-Straße 224118KielGermany
| |
Collapse
|
12
|
A critical review on graphitic carbon nitride (g-C3N4)-based composites for environmental remediation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119769] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
13
|
Bagherzadeh SB, Kazemeini M, Mahmoodi NM. Preparation of novel and highly active magnetic ternary structures (metal-organic framework/cobalt ferrite/graphene oxide) for effective visible-light-driven photocatalytic and photo-Fenton-like degradation of organic contaminants. J Colloid Interface Sci 2021; 602:73-94. [PMID: 34118607 DOI: 10.1016/j.jcis.2021.05.181] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/23/2021] [Accepted: 05/31/2021] [Indexed: 12/16/2022]
Abstract
Herein, MIL-101(Fe), CoFe2O4, novel binary (MIL-101(Fe)/CoFe2O4, MIL-101(Fe)/GO and CoFe2O4/GO), and ternary (MIL-101(Fe)/CoFe2O4/(3%)GO and MIL-101(Fe)/CoFe2O4/(7%)GO) magnetic composites based upon the MIL-101(Fe) were synthesized. The XRD, FESEM, TEM, EDX, BET-BJH, FTIR, VSM, DRS, PL, EIS and other electrochemical analyses were applied to characterize samples. The MIL/CoFe2O4/(3%)GO demonstrated the best performance compared to other samples for visible light photocatalytic and photo-Fenton-like degradation of Direct Red 23 (DtR-23), Reactive Red 198 (ReR-198) dyes as well as Tetracycline Hydrochloride (TC-H) antibiotic. Degradation of dyes using the ternary composite after 70 min of visible light irradiation was greater than that of 99%. The presence of the optimum GO as a strong electron acceptor in MIL/CoFe2O4/(3%)GO not only led to the effective separation of charge carriers and thus reduction of their recombination but also increased the absorption of visible light. The composite possessed good durability in terms of stability and reusability. The PL, EIS and electrochemical analyses indicated that the MIL/CoFe2O4/(3%)GO improved the optical properties and photocatalytic performance.
Collapse
Affiliation(s)
- Seyed Behnam Bagherzadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran; Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran
| | - Mohammad Kazemeini
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Niyaz Mohammad Mahmoodi
- Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
| |
Collapse
|
14
|
Gokulakrishnan SA, Arthanareeswaran G, László Z, Veréb G, Kertész S, Kweon J. Recent development of photocatalytic nanomaterials in mixed matrix membrane for emerging pollutants and fouling control, membrane cleaning process. CHEMOSPHERE 2021; 281:130891. [PMID: 34049085 DOI: 10.1016/j.chemosphere.2021.130891] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/23/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
Membrane-based separation is an area of extensive research in wastewater treatment, which includes the control of pollution and reuse of water. The fabrication and modification membranes for prevention and reduction of pollution to provide quality water with fouling-free membranes through the wastewater treatment are the progressive approaches in the industries. Several research works have been extensively working on modification and fabrication polymer membranes with integration of advanced oxidation process (AOP) to overcome the membrane fouling. This review describes the modification of membranes with various nanomaterials such as inorganic and modified carbon which can be used for pollution control and enhance the anti-fouling properties of ultrafiltration membranes. The effects on nanomaterials loading percentage, nanomaterials interaction with the polymers and rejection performances of the surface tuned membrane are elaborated. Secondly, the fouled membrane chemical cleaning process and NaOCl adverse effect on polymer structure are critically investigated. Moreover, state-of-art in the photocatalytic self-cleaning process are reviewed in this manuscript, and future perspectives on fouling mitigation based on AOP integrated membrane technology have also discussed.
Collapse
Affiliation(s)
- S A Gokulakrishnan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India.
| | - Zsuzsanna László
- Department of Biosystem Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Gábor Veréb
- Department of Biosystem Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Szabolcs Kertész
- Department of Biosystem Engineering, Faculty of Engineering, University of Szeged, Szeged, Hungary
| | - Jihyang Kweon
- Water Treatment and Membrane Laboratory, Department of Environmental Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| |
Collapse
|
15
|
Gao P, Yang Y, Yin Z, Kang F, Fan W, Sheng J, Feng L, Liu Y, Du Z, Zhang L. A critical review on bismuth oxyhalide based photocatalysis for pharmaceutical active compounds degradation: Modifications, reactive sites, and challenges. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125186. [PMID: 33516110 DOI: 10.1016/j.jhazmat.2021.125186] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/03/2021] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Pharmaceutical active compounds (PhACs), as a kind of widely used pharmaceutical drugs, has attracted much attention. The bismuth oxyhalides (BiOX)-based photocatalysis can remove PhACs efficiently due to its unique layered structure, optical and electronic properties. Nevertheless, the rapid recombination of photogenerated electron-hole pairs, and the inherent instability of structure have limited its practical application. In order to solve these problems, recent modification studies tend to focus on facet control, elemental doping, bismuth-rich strategies, defect engineering and heterojunction. Therefore, the objective of this review is to summarize the recent developments in multiply modified strategies for PhACs degradation. The synthesis methods, photocatalytic properties and the enhancement mechanism are elaborated. Besides, based on theoretical calculation, the reactive sites of typical PhACs attacked by different reactive oxygen species were also proposed. Subsequently, challenges and opportunities in applications are also featured which include factors, viz., dissolution of halogen ions, instability under visible light, applications of real water/wastewater, intermediates and byproducts toxicity analysis of BiOX-based photocatalysis. Finally, the perspectives of BiOX-based photocatalysis for PhACs photodegradation in actual water applications are highlighted.
Collapse
Affiliation(s)
- Peng Gao
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Yuning Yang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Ze Yin
- Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Department of Water Resource and Environment, Hebei GEO University, No. 136 Huai'an Road, Shijiazhuang 050031, Hebei, PR China
| | - Fengxin Kang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Waner Fan
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Jiayi Sheng
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Li Feng
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China.
| | - Yongze Liu
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Ziwen Du
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China
| | - Liqiu Zhang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-Remediation, Beijing Forestry University, Beijing 100083, PR China.
| |
Collapse
|
16
|
Cai C, Duan X, Xie X, Kang S, Liao C, Dong J, Liu Y, Xiang S, Dionysiou DD. Efficient degradation of clofibric acid by heterogeneous catalytic ozonation using CoFe 2O 4 catalyst in water. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124604. [PMID: 33277078 DOI: 10.1016/j.jhazmat.2020.124604] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/02/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
CoFe2O4 (Cobalt ferrite, CF) nanoparticles were prepared, well characterized and applied as efficient solid catalyst in catalytic ozonation, named CF/O3 process, for the removal of emerging organic contaminants (EOCs). The degradation and mineralization of clofibric acid (CA) in CF/O3 process were dramatically enhanced in comparison with those under the O3 system. Surface hydroxyl groups (HGs) were considered as an important factor for ozone decomposition and the reactive oxygen species (ROS) on the catalyst surface were mainly responsible for CA elimination. The contribution and formation of ROS, including hydroxyl radicals (•OH), especially superoxide radicals (O2•-), singlet oxygen (1O2), and hydrogen peroxide (H2O2) were evaluated, and a rational mechanism was elucidated accordingly. Probable degradation pathway of CA was proposed according to the organic intermediates identified. The acute toxicity of the treated solution increased during the first 15 min and then declined rapidly and nearly disappeared as the reaction proceeded. In addition, acceptable catalytic performance of CF/O3 can be obtained for the treatment of other EOCs and the treatment of natural surface water spiked with CA. This work presents an efficient and promising catalytic ozonation technique for the elimination of EOCs in complex water matrices.
Collapse
Affiliation(s)
- Chun Cai
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China; Environmental Engineering and Science Program, University of Cincinnati, OH 45221-0071, United States
| | - Xiaodi Duan
- Environmental Engineering and Science Program, University of Cincinnati, OH 45221-0071, United States
| | - Xianjun Xie
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China
| | - Shuping Kang
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China
| | - Chanjuan Liao
- College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
| | - Jiaming Dong
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China
| | - Yangfan Liu
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China
| | - Shaofeng Xiang
- School of Environmental Studies, Hubei Provincial Engineering Research Center of Systematic Water Pollution Control, China University of Geosciences, Wuhan 430074, China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, OH 45221-0071, United States.
| |
Collapse
|
17
|
Lin H, Tang X, Wang J, Zeng Q, Chen H, Ren W, Sun J, Zhang H. Enhanced visible-light photocatalysis of clofibric acid using graphitic carbon nitride modified by cerium oxide nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124204. [PMID: 33131938 DOI: 10.1016/j.jhazmat.2020.124204] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 10/04/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
Recently, the emerging pharmaceutical micropollutants have become an environmental concern. Herein, we report an efficient elimination of clofibric acid (CA) using visible light-driven g-C3N4/CeO2 prepared by hydrothermal method. Among the catalysts with different compound ratios, g-C3N4/CeO2-3 (1.2 g g-C3N4 with 3 mmol Ce(NO3)3∙6H2O) exhibited the best photocatalytic performance. The effect of catalyst dosage was investigated and the optimal value was determined as 0.5 g L-1. The effect of initial pH (pH0) showed CA elimination decreased with increasing pH0. The underlying mechanism for CA oxidation was proposed based on synthetical analysis of photoluminescence emission spectra, transient photocurrent responses, electron paramagnetic resonance, chemical quenching experiments and band edge potential of g-C3N4 and CeO2. Photogenerated hole was primarily responsible for CA elimination while singlet oxygen played an auxiliary role. The products of CA oxidation were detected using liquid chromatography mass spectrometry (LC-MS) method and a possible pathway was put forward. Various organics were used as target contaminants to assess photocatalytic performance of g-C3N4/CeO2 heterojunction under acidic and alkaline pH conditions. The analysis of relationship between the oxidation peak potential (EOP) and the reaction rate constant indicated that photocatalysis using as prepared g-C3N4/CeO2-3 heterojunction is apt to oxidize contaminants with electron withdrawing group under acid condition.
Collapse
Affiliation(s)
- Heng Lin
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China.
| | - Xin Tang
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Jing Wang
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Qingyuan Zeng
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Hanxiao Chen
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Wei Ren
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
| | - Jie Sun
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China.
| |
Collapse
|
18
|
Jing L, Wang D, He M, Xu Y, Xie M, Song Y, Xu H, Li H. An efficient broad spectrum-driven carbon and oxygen co-doped g-C 3N 4 for the photodegradation of endocrine disrupting: Mechanism, degradation pathway, DFT calculation and toluene selective oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123309. [PMID: 32652416 DOI: 10.1016/j.jhazmat.2020.123309] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/05/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
In this study, a new type of carbon and oxygen co-doped g-C3N4 (PACN) was successfully synthesized by a one-step thermal polymerization method for the photodegradation of Bisphenol A (BPA) and selective oxidation of toluene to benzaldehyde. The degradation rate of BPA was 23.58 times higher than that of pristine g-C3N4 and the efficiency benzaldehyde formation rate without the need of any solvent increased to 5.43 times that of g-C3N4. At the same time, the band structure calculation of its simulated structure is performed by DFT, which shows that the introduction of oxygen linking band can adjust its band structure and obtain a smaller band gap. In addition, the PACN displays an enhanced photocatalytic degradation of BPA under the long wavelength (λ ≥ 550 nm) and NIR light irradiation (λ ≥ 760 nm), which indicates that the synthesized materials have a broad spectrum of photocatalytic activity. According to the results of secondary ion mass spectrometry (SIMS) and nuclear magnetic resonance spectroscopy (NMR), C atoms and O atoms were introduced into the original g-C3N4 skeleton. In addition, the intermediate products were detected by mass spectrometry (HPLC-MS), and the BPA degradation pathway was proposed. A feasible photocatalytic reaction mechanism was also proposed.
Collapse
Affiliation(s)
- Liquan Jing
- School of Chemistry and Chemical Engineering, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Duidui Wang
- School of Chemistry and Chemical Engineering, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Minqiang He
- School of Chemistry and Chemical Engineering, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Yuanguo Xu
- School of Chemistry and Chemical Engineering, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Meng Xie
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Yanhua Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, PR China
| | - Hui Xu
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China
| | - Huaming Li
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China.
| |
Collapse
|
19
|
Enhanced Visible-light Photocatalytic Activity of g-C3N4/Nitrogen-doped Graphene Quantum Dots/TiO2 Ternary Heterojunctions for Ciprofloxacin Degradation with Narrow Band Gap and High Charge Carrier Mobility. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0301-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
20
|
Li R, Chen H, Xiong J, Xu X, Cheng J, Liu X, Liu G. A Mini Review on Bismuth-Based Z-Scheme Photocatalysts. MATERIALS 2020; 13:ma13225057. [PMID: 33182570 PMCID: PMC7697340 DOI: 10.3390/ma13225057] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/05/2020] [Accepted: 11/05/2020] [Indexed: 02/07/2023]
Abstract
Recently, the bismuth-based (Bi-based) Z-scheme photocatalysts have been paid great attention due to their good solar energy utilization capacity, the high separation rate of their photogenerated hole-electron pairs, and strong redox ability. They are considerably more promising materials than single semiconductors for alleviating the energy crisis and environmental deterioration by efficiently utilizing sunlight to motivate various photocatalytic reactions for energy production and pollutant removal. In this review, the traits and recent research progress of Bi-based semiconductors and recent achievements in the synthesis methods of Bi-based direct Z-scheme heterojunction photocatalysts are explored. The recent photocatalytic applications development of Bi-based Z-scheme heterojunction photocatalysts in environmental pollutants removal and detection, water splitting, CO2 reduction, and air (NOx) purification are also described concisely. The challenges and future perspective in the studies of Bi-based Z-scheme heterojunction photocatalysts are discussed and summarized in the conclusion of this mini review.
Collapse
Affiliation(s)
- Ruizhen Li
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, No. 1 Dongsan Road, Er'xian Bridge, Chengdu 610059, China
| | - Hanyang Chen
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
| | - Jianrong Xiong
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
| | - Xiaoying Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
| | - Jiajia Cheng
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
| | - Xingyong Liu
- School of Chemical Engineering, Sichuan University of Science and Engineering, Huixing Rd, Ziliujing District, Zigong 64300, China
| | - Guo Liu
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, No. 1 Dongsan Road, Er'xian Bridge, Chengdu 610059, China
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, No. 1 Dongsan Road, Er'xian Bridge, Chengdu 610059, China
| |
Collapse
|
21
|
Qin W, Lin Z, Dong H, Yuan X, Qiang Z, Liu S, Xia D. Kinetic and mechanistic insights into the abatement of clofibric acid by integrated UV/ozone/peroxydisulfate process: A modeling and theoretical study. WATER RESEARCH 2020; 186:116336. [PMID: 32889366 DOI: 10.1016/j.watres.2020.116336] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/08/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
The feasibility of integrated UV/ozone (O3)/peroxydisulfate (PDS) process for abatement of clofibric acid (CA) was systematically explored in this study with focus on the kinetic simulation and oxidation mechanisms. The results indicated the UV/O3/PDS process was of prominent treatment capability with pseudo-first-order rate constant of CA degradation increased by 65.9% and 86.0% compared to UV/O3 and UV/PDS processes, respectively. A chemical kinetic model was developed and successfully employed to predict CA elimination as well as the specific contributions of UV, hydroxyl radical (•OH) and sulfate radical (SO4•-) under different PDS dosage, pH, natural organic matters, bicarbonate and chloride conditions in UV/O3/PDS process. According to quantum chemical calculation, radical addition on ortho site of isopropoxy substituent and single electron transfer were corroborated to be the dominant reaction channels for the oxidation of CA by •OH and SO4•-, respectively. Additionally, the reactive sites and transformation pathways of CA were proposed via Fukui function calculation and UPLC-Q-TOF-MS analysis. Moreover, the performance of UV/O3/PDS process was further evaluated with regard to the energy demand and bromate formation. This study first proposed a kinetic model in UV/O3/PDS process and elucidated the regioselectivity and products distribution of CA during oxidative treatment.
Collapse
Affiliation(s)
- Wenlei Qin
- School of Environmental Engineering, Wuhan Textile University, No.1 Sunshine Avenue, Wuhan 430200, China; Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China
| | - Zhuang Lin
- School of Environmental Engineering, Wuhan Textile University, No.1 Sunshine Avenue, Wuhan 430200, China
| | - Huiyu Dong
- Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China
| | - Xiangjuan Yuan
- School of Environmental Engineering, Wuhan Textile University, No.1 Sunshine Avenue, Wuhan 430200, China; Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, No.1 Sunshine Avenue, Wuhan 430200, China.
| | - Zhimin Qiang
- Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China
| | - Shaogang Liu
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 158 Da-xue Road, Nanning 530008, China
| | - Dongsheng Xia
- School of Environmental Engineering, Wuhan Textile University, No.1 Sunshine Avenue, Wuhan 430200, China; Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, No.1 Sunshine Avenue, Wuhan 430200, China.
| |
Collapse
|
22
|
Jin X, Wu Y, Zhang Q, Wang F, Chen P, Liu H, Huang S, Wu J, Tu N, Lv W, Liu G. Defect-modified reduced graphitic carbon nitride (RCN) enhanced oxidation performance for photocatalytic degradation of diclofenac. CHEMOSPHERE 2020; 258:127343. [PMID: 32947672 DOI: 10.1016/j.chemosphere.2020.127343] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/31/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Hydroxyl radicals (OH) have robust non-selective oxidizing properties to effectively degrade organic pollutants. However, graphitic carbon nitride (g-C3N4) is restricted to directly generate OH due to its intrinsic valence band. In this study, we report a facile environmental-friendly self-modification strategy to synthesize reduced graphitic carbon nitride (RCN), with nitrogen vacancies and CN functional groups. The incorporation of CN enabled to downshift the valence band level, which endowed RCN with the capacity to directly generate OH via h+. Experimental and instrumental analyses revealed the critical roles of nitrogen vacancies and CN groups in the modification of the RCN band structure to improve its visible light absorption and oxidizing capacity. With these superior properties, the RCN was significantly enhanced for the photocatalytic degradation of DCF under visible light irradiation. The self-modification strategy articulated in this study has strong potential for the creation of customized g-C3N4 band structures with enhanced oxidation performance.
Collapse
Affiliation(s)
- Xiaoyu Jin
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yuliang Wu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Fengliang Wang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China; School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China
| | - Haijin Liu
- Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, School of Environment, Henan Normal University, Xinxiang, 453007, China
| | - Shoubin Huang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Jianqing Wu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ningyu Tu
- College of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| |
Collapse
|
23
|
Bertoldi C, de Cássia Campos Pena A, Dallegrave A, Fernandes AN, Gutterres M. Photodegradation of Emerging Contaminant 2-(tiocyanomethylthio) Benzothiazole (TCMTB) in Aqueous Solution: Kinetics and Transformation Products. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 105:433-439. [PMID: 32740745 DOI: 10.1007/s00128-020-02954-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
Direct photolysis of the emerging contaminant 2-(thiocyanomethylthio) benzothiazole (TMCTB) was performed in aqueous solution at different concentrations with high-pressure mercury lamp (5.0, 8.0, 13.0, 16.0, 20.0, 23.0, 27.0, 35.0, 40.0, 45.0, and 50.0 mg L- 1) and with natural sunlight radiation (6.0, 30.0, and 60.0 mg L- 1). TCMTB underwent rapid degradation by direct photolysis with a high-pressure mercury lamp in aqueous solutions, with 99% removal after 30 min at all concentrations studied. For sunlight photolysis, TCMTB degradation was observed with 96%, 81%, and 64% removal for initial concentrations of 6.0, 30.0, and 60.0 mg L- 1, respectively, after 7 h of exposure to sunlight. The degradation of TCMTB in lab-scale wastewater had kinetic constant and t1/2 in the same order when compared to the photodegradation of TCMTB in aqueous solutions. In addition, the results showed that photolysis with a high-pressure mercury lamp and sunlight were governed by the same kinetic order, however the kinetic parameters showed that degradation with sunlight was 40 times slower than photolysis with the mercury lamp. Twelve transformation products (TP) were identified, and eight of the TP have not been described in the literature. Furthermore, prediction of toxicity with ECOSAR software was carried out for fish, daphnids, and green algae species. It showed that photolytic treatment is efficient for reducing the toxicity of the compound, since the degradation formed compounds with lower toxicity than the primary compound. In conclusion, this study suggests that photolysis is an efficient way to remove the studied contaminant, and it highlights the potential of this technique for the degradation of emerging contaminants in industrial wastewater treatment plants.
Collapse
Affiliation(s)
- Crislaine Bertoldi
- Laboratory of Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Av. Luiz Englert s/n°, 90040- 040, Porto Alegre, Brazil.
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, n° 9500, 91501-970, Porto Alegre, Brazil.
| | - Aline de Cássia Campos Pena
- Laboratory of Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Av. Luiz Englert s/n°, 90040- 040, Porto Alegre, Brazil
| | - Alexsandro Dallegrave
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, n° 9500, 91501-970, Porto Alegre, Brazil
| | - Andreia N Fernandes
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, n° 9500, 91501-970, Porto Alegre, Brazil.
| | - Mariliz Gutterres
- Laboratory of Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Av. Luiz Englert s/n°, 90040- 040, Porto Alegre, Brazil
| |
Collapse
|
24
|
Zou R, Angelidaki I, Yang X, Tang K, Andersen HR, Zhang Y. Degradation of pharmaceuticals from wastewater in a 20-L continuous flow bio-electro-Fenton (BEF) system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138684. [PMID: 32330723 DOI: 10.1016/j.scitotenv.2020.138684] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 06/11/2023]
Abstract
The bio-electro-Fenton (BEF) technology has proven to be an effective and energy-saving method for treating wastewaters containing a single pharmaceutical in the lab-scale. However, the continuous degradation of pharmaceuticals in a scaled-up BEF has never been reported. In this study, a 20-L dual-chamber BEF reactor was designed and tested for treating six model pharmaceuticals. The effect of key operational factors including applied voltage, cathode Fe2+ dosage, initial pharmaceuticals concentration and hydraulic retention time (HRT), were assessed. By implementing 0.1 V voltage, 0.3 mM Fe2+ and HRT of 26 h, the six selected pharmaceuticals (500 μg L-1 for each) were removed completely. Moreover, transformation products during clofibric acid degradation, such as 4-chlororesorcinol, were detected and the relevant transformation pathway was proposed. Additionally, it successfully removed these pharmaceuticals in the real wastewater matrix. This paper contributes to scaling-up the BEF process for continuous and effective treating pharmaceuticals-contaminated wastewater.
Collapse
Affiliation(s)
- Rusen Zou
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Irini Angelidaki
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Xiaoyong Yang
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Kai Tang
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Henrik Rasmus Andersen
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark.
| |
Collapse
|
25
|
Shiravand G, Badiei A, Goldooz H, Karimi M, Ziarani GM, Faridbod F, Ganjali MR. A Fluorescent g-C3N4 Nanosensor for Detection of Dichromate Ions. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411014666180627150248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Background:
Dichromate (Cr2O7
2-) ion is one of the carcinogenic and toxic spices in
environment which can easily contaminate the environment due to its high solubility in water. Therefore,
a lot of attention has been focused on the detection of Cr2O7
2- with high sensitivity and selectivity.
Methods:
In present work, nitrogen-rich precursor was used for synthesizing graphitic carbon nitride
(g-C3N4) nanostructures through hydrothermal oxidation of g-C3N4 nanosheets. The prepared
nanostructures show two distinct fluorescence emissions centered at 368 and 450 nm which are highly
sensitive toward Cr2O7
2- ions.
Results:
The as-prepared g-C3N4 was characterized by several techniques such as Fourier-Transform
Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and
fluorescence emission spectra. The XRD pattern of prepared nanostructures illustrated two diffraction
patterns (at 13.4° and 27.6°) indicating tri-s-tri-azine-based structures. The g-C3N4 exhibited good selectivity
and sensitivity toward Cr2O7
2- among other anions. According to titration test, the detection
limit and stern-volmer constant (Ksv) were calculated as 40 nM and 0.13×106 M-1, respectively. The
investigation of quenching mechanism shows that Cr2O7
2- may form hydrogen bonding with surface
groups of g-C3N4 (such as NH2, OH and COOH) resulted in more fluorescence quenching in comparison
with the pure inner filter effect.
Conclusion:
The g-C3N4 nanostructures were successfully synthesized through the hydrothermal oxidation.
The as-prepared g-C3N4 can be used as a highly sensitive fluorescent probe for the selective
determination of Cr2O7
2 ion among other anions. The quenching mechanism was experimentally studied.
According to reliable responses in real sample tests, it can be proposed that g-C3N4 nanostructure
is a suitable sensitive nanosensor for detection of Cr2O7
2 ions in aqueous media.
Collapse
Affiliation(s)
- Ghasem Shiravand
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Alireza Badiei
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Hassan Goldooz
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mehdi Karimi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Ghodsi M. Ziarani
- Department of Chemistry, Faculty of Science, Alzahra University, Tehran, Iran
| | - Farnoush Faridbod
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad R. Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| |
Collapse
|
26
|
Li S, Wang Z, Xie X, Liang G, Cai X, Zhang X, Wang Z. Fabrication of vessel-like biochar-based heterojunction photocatalyst Bi 2S 3/BiOBr/BC for diclofenac removal under visible LED light irradiation: Mechanistic investigation and intermediates analysis. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:121407. [PMID: 32145925 DOI: 10.1016/j.jhazmat.2019.121407] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/05/2019] [Accepted: 10/05/2019] [Indexed: 06/10/2023]
Abstract
In this work, a novel, economical and effective vessel-like biochar-based photocatalyst Bi2S3/BiOBr/BC was synthesized by a facile one-pot solvothermal method for the first time. A series of characterization analyses demonstrated the successful preparation of photocatalyst Bi2S3/BiOBr/BC. Furthermore, diclofenac (DCF) as the target contaminant was applied to elucidate the enhanced photocatalytic performance (93.65%, 40 min) under energy-saving visible LED light irradiation. Comparison experiments among different photocatalysts and photoelectrochemical tests results illustrated that excellent photocatalytic performance of Bi2S3/BiOBr/BC 10% might be attributed to the electrons transfer of biochar and higher charge separation efficiency of heterojunction structure. Besides, lower electrical energy per order value indicated photocatalyst/visible LED light system was more energy-saving. Proper photocatalyst dosage (0.6 g/L) and relatively acidic water environment (pH = 5.0) would be beneficial to DCF photodegrdation by Bi2S3/BiOBr/BC. Good reusability and stability of Bi2S3/BiOBr/BC were verified via five consecutive recycle experiments. Furthermore, the role of active species was determined through trapping experiments and O2- and h+ dominated the photodegradation reaction to mineralize DCF molecules. Eleven main intermediates and four possible photodegradation pathways were proposed by HRMS analysis. Accordingly, photocatalyst Bi2S3/BiOBr/BC would provide potential technical support for emerging pollutant removal in water matrix.
Collapse
Affiliation(s)
- Shan Li
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zirun Wang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xiaoyun Xie
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Guiwei Liang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xuewei Cai
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xiaoli Zhang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhaowei Wang
- Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
27
|
Baig U, Khan A, Gondal MA, Dastageer MA, Falath WS. Laser Induced Anchoring of Nickel Oxide Nanoparticles on Polymeric Graphitic Carbon Nitride Sheets Using Pulsed Laser Ablation for Efficient Water Splitting under Visible Light. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1098. [PMID: 32498231 PMCID: PMC7353223 DOI: 10.3390/nano10061098] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 11/16/2022]
Abstract
A visible-light-active nickel oxide-graphitic carbon nitride (NiO@g-CN) hetero-structured nanocomposite was synthesized for the first time by pulsed laser ablation in liquid and used as a photoanode material in photoelectrochemical water-splitting reaction with a solar simulator. It was found that the photoelectrochemical performance of PLAL synthesized NiO@g-CN nanocomposite as photoanode, compared to g-CN as photoanode showed fourfold enhancements in photocurrent density under visible light. FT-IR, XRD, FE-SEM, and EDX consistently showed the proper anchoring of nano-sized NiO on g-CN. UV-DRS and the band gap estimation showed the narrowing down of the band gap energy and consequent enhancement in the visible-light absorption, whereas photoluminescence spectroscopy confirmed the reduction of the recombination of photo-excited electron hole pairs as a result of the anchoring of NiO on g-CN. The photoelectrochemical performance of g-CN and the NiO@g-CN nanocomposite photoanodes was compared by linear sweep voltammetry (LSV), Chronoamperometry (I-t), and Electrochemical Impedance Spectroscopy (EIS). All of these results of the characterization studies account for the observed fourfold enhancement of photocurrent density of NiO@g-CN nanocomposite as photoanode in the photoelectrochemical reaction.
Collapse
Affiliation(s)
- Umair Baig
- Center of Research Excellence in Desalination & Water Treatment and Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (U.B.); (W.S.F.)
| | - Abuzar Khan
- Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Mohammad A. Gondal
- Department of Physics and Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Mohamed A. Dastageer
- Department of Physics and Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Wail S. Falath
- Center of Research Excellence in Desalination & Water Treatment and Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (U.B.); (W.S.F.)
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| |
Collapse
|
28
|
Liu X, Li W, Hu R, Wei Y, Yun W, Nian P, Feng J, Zhang A. Synergistic degradation of acid orange 7 dye by using non-thermal plasma and g-C 3N 4/TiO 2: Performance, degradation pathways and catalytic mechanism. CHEMOSPHERE 2020; 249:126093. [PMID: 32045754 DOI: 10.1016/j.chemosphere.2020.126093] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/07/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
In order to harness the full capability of ultraviolet and visible light in the dielectric barrier discharge induced non-thermal plasma (DBD-NTP) process, g-C3N4/TiO2 catalysts were prepared and utilized in this process. Synergistic degradation of acid orange 7 (AO7) dye by DBD-NTP and g-C3N4/TiO2 was conducted, and the performance, degradation pathways and synergistic catalytic mechanism were investigated. The results showed that the degradation rate of AO7 in the DBD-NTP and g-C3N4-15/TiO2 process increased by 39.1% compared with that in the single DBD-NTP process at 12 min discharge time. At 20 W input power, initial concentration of AO7 was 5 mg/L, catalytic dosage was 0.5 g/L, initial pH value was 10.0 and air flow rate was 52 L/h, the degradation rate of AO7 reached 100.0% after 12 min discharge time. Higher discharge power and initial concentration of AO7 inhibited AO7 degradation, whereas increasing the air flow rate and initial pH value of the solution promoted AO7 degradation. The degradation pathways of AO7 consisted of azo structure destruction, ring opening reaction, hydroxylation, carboxylation and mineralization reaction. The results of radical trapping experiment showed that O2-, h+, OH, O3 and H2O2 were the main reactive species for AO7 degradation in the DBD-NTP and g-C3N4-15/TiO2 process. The Z-scheme photocatalytic mechanism for the g-C3N4/TiO2 catalyst was proposed.
Collapse
Affiliation(s)
- Xuewen Liu
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Wenqiang Li
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Rui Hu
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Yang Wei
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Weiyang Yun
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Peng Nian
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| | - Jingwei Feng
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China; Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering, Yancheng, 224001, PR China; Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources, Hefei, 230009, China.
| | - Aiyong Zhang
- Department of Municipal Engineering, School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, PR China
| |
Collapse
|
29
|
Bai R, Xiao Y, Yan W, Wang S, Ding R, Yang F, Li J, Lu X, Zhao F. Rapid and efficient removal of naproxen from water by CuFe 2O 4 with peroxymonosulfate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:21542-21551. [PMID: 32279248 DOI: 10.1007/s11356-020-08613-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Naproxen, a widely used nonsteroidal anti-inflammatory drug, has been detected in many environmental matrixes and is regarded as an emerging pollutant. Sulfate radical (SO4·-) -based advanced oxidation processes have attracted wide attention due to their high efficiency and applicability in the removal of emerging contaminants. In this study, CuFe2O4 was used as an efficient catalyst to activate peroxymonosulfate to oxidize naproxen. The results suggested that 92.3% of naproxen was degraded and 50.3% total organic carbon was removed in 60 min in the presence of 0.3 g·L-1 CuFe2O4 and 2 mM peroxymonosulfate. This degradation system showed strong adaptability in a wide pH range from 4.0 to 10.0. Free radical scavenger experiments and electron spin resonance analysis indicated that 1O2, ·OH, and SO4·- are the main active species. Finally, the potential degradation pathways of naproxen were proposed by detecting and analyzing the degradation products with ultra-high-performance liquid chromatography combined with mass spectrometry. The results of this study suggest that the CuFe2O4-activated peroxymonosulfate system is a promising technology for the removal of naproxen from natural water.
Collapse
Affiliation(s)
- Rui Bai
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Xiao
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Weifu Yan
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Siqi Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Rui Ding
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fan Yang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junpeng Li
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Feng Zhao
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| |
Collapse
|
30
|
Huang J, Li D, Li R, Chen P, Zhang Q, Liu H, Lv W, Liu G, Feng Y. One-step synthesis of phosphorus/oxygen co-doped g-C 3N 4/anatase TiO 2 Z-scheme photocatalyst for significantly enhanced visible-light photocatalysis degradation of enrofloxacin. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121634. [PMID: 31740315 DOI: 10.1016/j.jhazmat.2019.121634] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/25/2019] [Accepted: 11/06/2019] [Indexed: 06/10/2023]
Abstract
Anatase TiO2 nanoparticles coated with P and O co-doped g-C3N4 were prepared via a single-step procedure. The resulting POCN/anatase TiO2 demonstrated remarkable performance in the degradation of enrofloxacin (ENFX). The photocatalytic activity of this heterojunction was 28.9 and 3.71 times better than that of the CN and anatase TiO2, respectively. The microtopography of the POCN/anatase TiO2 was revealed in this study. Co-doping with P and O increased the visible light adsorption capacity of the g-C3N4, whereas the anatase TiO2 nanoparticles enhanced the adsorption properties of the ENFX and the separation of the photoinduced carriers of the POCN/anatase TiO2. The O2·- and h+ were the main reactive oxidative species in the photocatalytic degradation of ENFX. The results of the detection of H2O2 and ESR confirmed that POCN/anatase TiO2 was a type Z-scheme photocatalyst. Finally, the ENFX degradation pathways were estimated through the detection of by-products.
Collapse
Affiliation(s)
- Jiaxing Huang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Daguang Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ruobai Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Haijin Liu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Xinxiang 453007, China
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Yiping Feng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| |
Collapse
|
31
|
Gao B, Wang J, Dou M, Xu C, Huang X. Enhanced photocatalytic removal of amoxicillin with Ag/TiO 2/mesoporous g-C 3N 4 under visible light: property and mechanistic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7025-7039. [PMID: 31883070 DOI: 10.1007/s11356-019-07112-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
In present study, an efficient ternary Ag/TiO2/mesoporous g-C3N4 (M-g-C3N4) photocatalyst was successfully synthesized through depositing Ag nanoparticles (NPs) on the surface of TiO2/M-g-C3N4 heterojunction. Ag/TiO2/M-g-C3N4 nanocomposite displayed the highest degradation efficiency for amoxicillin (AMX) compared to TiO2/M-g-C3N4 heterojunction, M-g-C3N4, and bulk-g-C3N4 (B-g-C3N4). The removal efficiency of AMX in real situation, surface water (SW), hospital wastewater (HW), and waste water treatment plant (WWTP) also were studied to illustrate the effectiveness of Ag/TiO2/M-g-C3N4 photocatalysts. The vulnerable atoms in AMX structure were revealed through DFT calculation. Additionally, the dominating active groups produced in time of the photocatalytic procedure were determined on account of free radical trapping experiments and ESR spectra. The mechanism of photocatalytic degradation was proposed and verified. The transfer of the electrons and the inhibition of the recombination of photogenerated electron-holes were enhanced effectively under the synergistic effect of the Ag NPs and TiO2. As a consequence, the catalytic activity of the composite was improved under visible light.
Collapse
Affiliation(s)
- Boru Gao
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Jin Wang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China.
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China.
| | - Mengmeng Dou
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Ce Xu
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Xue Huang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| |
Collapse
|
32
|
Chen X, Yao J, Xia B, Gan J, Gao N, Zhang Z. Influence of pH and DO on the ofloxacin degradation in water by UVA-LED/TiO 2 nanotube arrays photocatalytic fuel cell: mechanism, ROSs contribution and power generation. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121220. [PMID: 31563766 DOI: 10.1016/j.jhazmat.2019.121220] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/10/2019] [Accepted: 09/11/2019] [Indexed: 05/21/2023]
Abstract
The influence of pH and dissolved oxygen (DO) on the degradation of ofloxacin (OFX) in water by UVA-LED/TiO2 nanotube arrays photocatalytic fuel cell (UVA-LED/TNA PFC) was investigated. The degradation pathway depended on the location of OFX frontier orbital with different ionization states and the role of reactive oxidative species (ROSs) played with varied pH and DO values. In presence of DO, the quencher tests revealed that O2- played a key role at pH 3.0, 7.0 and 11.0, while OH made its greatest contribution at pH 3.0 and the effect of h+ was largely inhibited at pH 11.0. Hydroxylation for cationic OFX was more significant, while demethylation and piperazinyl ring oxidation for anionic OFX occurred more quickly compared to other forms. Besides, zwitterionic OFX underwent decarboxylation and combination of demethylation & hydroxylation more easily. Much higher power generation was observed in presence of DO at pH 7.0, probably due to the enhanced adsorption of OFX on the TNA, and DO could amplify the electric potential between the two electrodes. The degradation efficiencies were almost the same in presence or absence of DO, but the pathways were different and e-aq may replace O2- as the leading ROSs in absence of DO.
Collapse
Affiliation(s)
- Xiangyu Chen
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Juanjuan Yao
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China.
| | - Bin Xia
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China; Chongqing Municipal Research Institute of Design, Chongqing, 400000, China
| | - Jingye Gan
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Naiyun Gao
- State Key laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, China
| | - Zhi Zhang
- Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| |
Collapse
|
33
|
Li H, Duan L, Wang H, Chen Y, Wang F, Zhang S. Photolysis of sulfadiazine under UV radiation: Effects of the initial sulfadiazine concentration, pH, NO3− and Cd2+. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136949] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
34
|
Wang Y, Li H, Yi P, Zhang H. Degradation of clofibric acid by UV, O 3 and UV/O 3 processes: Performance comparison and degradation pathways. JOURNAL OF HAZARDOUS MATERIALS 2019; 379:120771. [PMID: 31255848 DOI: 10.1016/j.jhazmat.2019.120771] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/21/2019] [Accepted: 06/12/2019] [Indexed: 06/09/2023]
Abstract
In this study, ultraviolet (UV) irradiation, ozonation (O3) and their combination (UV/O3) were used to decompose clofibric acid (CA). The results show that UV system exhibited a very high CA removal rate (0.20 min-1) but the lowest mineralization (14.8%) accompanied by the formation of more toxic products. Ozonation achieved a much lower removal rate (0.05 min-1) but a higher mineralization efficiency (22.7%) in comparison with UV photolysis. The introduction of UV irradiation into O3 system significantly enhanced the removal rate (0.21 min-1) and the mineralization efficiency (68.2%) of CA. The acute toxicity of the reaction solution to Daphnia magna in the UV/O3 process increased during the first 20 min and then decreased, which illustrates that UV/O3 is an effective and safe method for the removal of CA. The intermediate products were identified by LC-MS analysis and the degradation pathways for all the three processes were proposed. The direct photolysis and hydrous electron reduction contributed to the CA elimination in UV alone process. In O3 alone system, the removal of CA occurred via direct ozone oxidation and indirect free radical oxidation. The free radical, ozone, hydrous electron and direct photolysis were involved in the degradation of CA in the UV/O3 process.
Collapse
Affiliation(s)
- Yan Wang
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Luoyu Road 129(#), Wuhan 430079, China; Department of Environmental Science and Engineering, Anhui Science and Technology University, Donghua Road 9(#), Fengyang 233100, China
| | - Huiyuan Li
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Luoyu Road 129(#), Wuhan 430079, China
| | - Pan Yi
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Luoyu Road 129(#), Wuhan 430079, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Luoyu Road 129(#), Wuhan 430079, China.
| |
Collapse
|
35
|
Devi TB, Mohanta D, Ahmaruzzaman M. Biomass derived activated carbon loaded silver nanoparticles: An effective nanocomposites for enhanced solar photocatalysis and antimicrobial activities. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.03.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
36
|
Zhang L, Shi Q, Guo Y, Xu D, Wang H, Wang L, Bian Z. Interface optimization by impedance spectroscopy and photoelectrocatalytic degradation of clofibric acid. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
37
|
Chen P, Blaney L, Cagnetta G, Huang J, Wang B, Wang Y, Deng S, Yu G. Degradation of Ofloxacin by Perylene Diimide Supramolecular Nanofiber Sunlight-Driven Photocatalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:1564-1575. [PMID: 30604606 DOI: 10.1021/acs.est.8b05827] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study describes a promising sunlight-driven photocatalyst for the treatment of ofloxacin and other fluoroquinolone antibiotics in water and wastewater. Perylene diimide (PDI) supramolecular nanofibers, which absorb a broad spectrum of sunlight, were prepared via a facile acidification polymerization protocol. Under natural sunlight, the PDI photocatalysts achieved rapid treatment of fluoroquinolone antibiotics, including ciprofloxacin, enrofloxacin, norfloxacin, and ofloxacin. The fastest degradation was observed for ofloxacin, which had a half-life of 2.08 min for the investigated conditions. Various light sources emitting in the UV-vis spectrum were tested, and blue light was found to exhibit the fastest ofloxacin transformation kinetics due to the strong absorption by the PDI catalyst. Reactive species, namely, h+, 1O2, and O2•-, comprised the primary photocatalytic mechanisms for ofloxacin degradation. Frontier electron density calculations and mass spectrometry were used to verify the major degradation pathways of ofloxacin by the PDI-sunlight photocatalytic system and identify the transformation products of ofloxacin, respectively. Degradation mainly occurred through demethylation at the piperazine ring, ketone formation at the morpholine moiety, and aldehyde reaction at the piperazinyl group. An overall mechanism was proposed for ofloxacin degradation in the PDI-sunlight photocatalytic system, and the effects of water quality constituents were examined to determine performance in real water/wastewater systems. Ultimately, the aggregate results from this study highlight the suitability of the PDI-sunlight photocatalytic system to treat antibiotics in real water and wastewater systems.
Collapse
Affiliation(s)
- Ping Chen
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Lee Blaney
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
- Department of Chemical, Biochemical, and Environmental Engineering , University of Maryland Baltimore County , 1000 Hilltop Circle, Engineering 314 , Baltimore , Maryland 21250 , United States
| | - Giovanni Cagnetta
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Jun Huang
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Bin Wang
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Yujue Wang
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Shubo Deng
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| | - Gang Yu
- School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control , Tsinghua University , Beijing 100084 , China
| |
Collapse
|
38
|
Chen P, Zhang Q, Shen L, Li R, Tan C, Chen T, Liu H, Liu Y, Cai Z, Liu G, Lv W. Insights into the synergetic mechanism of a combined vis-RGO/TiO 2/peroxodisulfate system for the degradation of PPCPs: Kinetics, environmental factors and products. CHEMOSPHERE 2019; 216:341-351. [PMID: 30384303 DOI: 10.1016/j.chemosphere.2018.10.096] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/01/2018] [Accepted: 10/16/2018] [Indexed: 06/08/2023]
Abstract
In recent years, how to effectively remove emerging organic pollutants in water bodies has been studied extensively, especially in the actual complex water environment. In the present study, an effective wastewater treatment system that combined photocatalysis and an oxidizing agent was investigated. Specifically, visible-light driven reduced graphene oxide (RGO)/TiO2 composites were prepared, and peroxodisulfate (PDS) was used as electron acceptor to accelerate the photocatalytic activity of this material. The vis-RGO/TiO2/PDS system exhibited outstanding properties in the degradation of diclofenac (DCF), which was also facilitated by acidic conditions and Cl-. Lake water, tap water, river water and HCO3- decreased the DCF degradation rate, while NO3- affected the system only slightly. Low concentrations of fulvic acid (FA) promoted the degradation of DCF via the generation of excited states, whereas a high concentration of FA inhibited the degradation, which was likely due to the light screening effect. The photocatalytic mechanism revealed that PDS served as an electron acceptor for the promotion of electron-hole pair separation and the generation of additional reactive oxygen species, while the RGO served as an electric conductor. The active substances, h+, OH, 1O2, SO4- and O2- were generated in this system, O2- and h+ played significant roles in the degradation of DCF based electron spin resonance tests and radical quenching results. According to the mass spectrometry results, the amide bond cleavage, dechlorination reaction, hydroxyl addition reaction, and decarboxylation reaction were the primary transformative pathways.
Collapse
Affiliation(s)
- Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lingzhi Shen
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Ruobai Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Cuiwen Tan
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Tiansheng Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Haijin Liu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Xinxiang, 453007, China
| | - Yang Liu
- Faculty of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Zongwei Cai
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China; State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| |
Collapse
|
39
|
Zhang Y, Zhou J, Feng Q, Chen X, Hu Z. Visible light photocatalytic degradation of MB using UiO-66/g-C 3N 4 heterojunction nanocatalyst. CHEMOSPHERE 2018; 212:523-532. [PMID: 30165279 DOI: 10.1016/j.chemosphere.2018.08.117] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/18/2018] [Accepted: 08/23/2018] [Indexed: 06/08/2023]
Abstract
A unique hybrid of Zr-based metal-organic framework (UiO-66) with graphitic carbon nitride (g-C3N4) nanosheets was synthesized by a facile annealing method. Photocatalytic effect was measured by the photodegradation of methylene blue (MB) under visible light irradiation. The morphology, structure, and porous properties of the as-synthesized composites were characterized by using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), the thermogravimetric and differential scanning calorimetry analysis (TG-DSC), diffuse reflectance UV-vis spectroscopy (UV-vis DRS), photoluminescence (PL), and N2 sorption-desorption isotherms (BET). The results showed that about 100% of MB (200 mL of 10 mg L-1) photodegradation was achieved by the UiO-66/g-C3N4 hybrids (UC 10:10) in 240 min under visible light. The enhanced photocatalytic activity could be attributed to the heterojunction between UiO-66 and g-C3N4 therefore the photoelectron transfers efficiently from the conduction band (CB) of g-C3N4 to the CB of UiO-66 through the inner electric field generated by the heterojunction resulting the decreasing of recombination of electron/hole and the porous structures which enhance adsorption of the dye molecules on the catalyst surface thereby facilitates the electron/hole transfer within the framework. The trapping experiment and electron spin resonance (ESR) results showed that superoxide radicals (•O2-) was the main oxidative species in the photodegradation of MB and the enhanced photocatalytic mechanism of UiO-66/g-C3N4 heterojunction hybrids was also proposed.
Collapse
Affiliation(s)
- Ying Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Jiabin Zhou
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Qinqin Feng
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Xin Chen
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Zeshu Hu
- School of Resources and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| |
Collapse
|
40
|
Fabrication of highly efficient TiO2/C3N4 visible light driven photocatalysts with enhanced photocatalytic activity. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.07.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Degradation and removal of Ceftriaxone sodium in aquatic environment with Bi2WO6/g-C3N4 photocatalyst. J Colloid Interface Sci 2018; 523:7-17. [DOI: 10.1016/j.jcis.2018.03.078] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/21/2018] [Accepted: 03/24/2018] [Indexed: 11/21/2022]
|
42
|
Mirzaei A, Chen Z, Haghighat F, Yerushalmi L. Hierarchical magnetic petal-like Fe 3O 4-ZnO@g-C 3N 4 for removal of sulfamethoxazole, suppression of photocorrosion, by-products identification and toxicity assessment. CHEMOSPHERE 2018; 205:463-474. [PMID: 29705637 DOI: 10.1016/j.chemosphere.2018.04.102] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/15/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023]
Abstract
Herein, a petal-like photocatalyst, Fe3O4-ZnO@g-C3N4 (FZG) with different g-C3N4 to ZnO ratios was synthesized with hierarchical structure. The FZG1 photocatalyst, having the weight ratio of 1:1 for the initial urea and Fe3O4-ZnO (Fe-ZnO), presented the highest sulfamethoxazole (SMX) degradation rate of 0.0351 (min-1), which was 2.6 times higher than that of pristine ZnO. Besides the facile separation, the performance of photocatalyst was improved due to the function of iron oxide as an electron acceptor that reduced the electron/hole recombination rate. The coating of g-C3N4 on the Fe-ZnO surface not only acted as a protective layer for ZnO against photocorrosion, but it also enhanced the photocatalytic activity of the catalyst for SMX degradation through the heterojunction mechanism. By using the FZG1 photocatalyst, 95% SMX removal was obtained after 90 min reaction, while 47% COD and 30% TOC removal were achieved after 60 min treatment under a low energy-consuming UV lamp (10 W). Moreover, a substantial reduction in the solution toxicity was shown after the treatment, as compared with the SMX solution before treatment. The LC-HR-MS/MS analysis results showed that the concentration of most detected by-products produced after 90 min reaction by FZG1 was considerably lower than those obtained using other synthesized photocatalysts. By performing radical scavenging experiments, OH° radical was found to be the major reactive species. The FZG1 photocatalyst also displayed excellent reusability in five cycles and the leaching of zinc and iron ions was reduced by 54% and ∼100%, respectively, after coating Fe-ZnO with g-C3N4.
Collapse
Affiliation(s)
- Amir Mirzaei
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Quebec, Canada
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Quebec, Canada.
| | - Fariborz Haghighat
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Quebec, Canada
| | - Laleh Yerushalmi
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Quebec, Canada
| |
Collapse
|
43
|
Kim DJ, Jo WK. Mitigation of harmful indoor organic vapors using plug-flow unit coated with 2D g-C 3N 4 and metallic Cu dual-incorporated 1D titania heterostructure. CHEMOSPHERE 2018; 202:184-190. [PMID: 29571138 DOI: 10.1016/j.chemosphere.2018.03.089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/08/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
Herein, a plug-flow reactor coated with one-dimensional (1D) TiO2 nanotube (TNT) heterostructures incorporated with g-C3N4 (CN) and metallic Cu (CN/Cu/TNT) nanocomposite and irradiated by a daylight lamp was newly applied for the mitigation of harmful indoor organic vapors. The CN/Cu/TNT catalyst showed high mitigation efficiency for all target pollutants, followed by Cu-incorporated TNT (Cu/TNT), CN-incorporated TNT (CN/TNT), TNT, and TiO2, in that order. The order of their photocatalytic activities agrees with that of the electron‒hole separation rates determined from their photoluminescence emission spectra. The mitigation efficiency of the CN/Cu/TNT catalyst increased as the CN-to-Cu/TNT percentage was increased from 1% to 10%, but subsequently decreased as the CN-to-Cu/TNT percentage increased to 20%. The mitigation efficiencies of the CN/Cu/TNT catalyst decreased with increasing relative humidity, feed pollutant concentrations, and airstream flow rates. However, in most cases, the reaction rates of the target compounds increased when the feed concentration was increased from 1 to 5 ppm. The mineralization rates of all target pollutants were lower than the corresponding photocatalytic mitigation rates, which could be ascribed to the production of CO and organic intermediates observed during the photocatalysis of the target pollutants. Nevertheless, the intermediates formed during the photocatalytic mitigation process would not cause significant adverse health effects to building occupants, because their concentrations were far below their exposure or threshold limit values. A probable mechanism for the photocatalytic mitigation of the organic vapors by the CN/Cu/TNT catalyst under daylight illumination was also proposed.
Collapse
Affiliation(s)
- Dong Jin Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, 702-701, South Korea
| | - Wan-Kuen Jo
- Department of Environmental Engineering, Kyungpook National University, Daegu, 702-701, South Korea.
| |
Collapse
|
44
|
Zhao L, Deng J, Sun P, Liu J, Ji Y, Nakada N, Qiao Z, Tanaka H, Yang Y. Nanomaterials for treating emerging contaminants in water by adsorption and photocatalysis: Systematic review and bibliometric analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:1253-1263. [PMID: 30857090 DOI: 10.1016/j.scitotenv.2018.02.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 05/25/2023]
Abstract
Emerging contaminants in the aquatic environment have become a worldwide problem. Conventional wastewater treatment processes are ineffective for eliminating the emerging contaminants at trace concentrations. Nanomaterials possessing novel size-dependent properties, however, have shown great potential for removing these contaminants. Herein we reviewed nanomaterials reported for removing emerging contaminants by adsorption and/or photocatalysis, and their removal capacity, mechanism, and influencing factors are discussed. Meanwhile, a large-scale bibliometric analysis is conducted on the trends of the emerging contaminants, nanoadsorbents, nanophotocatalysts, and related research topics from the literature during 1998-2017.
Collapse
Affiliation(s)
- Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jinghui Deng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Peizhe Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jiashu Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yi Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Norihide Nakada
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Zhi Qiao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Hiroaki Tanaka
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| |
Collapse
|
45
|
Cationic and free radical polymerization initiated by a visible-light sensitive complex based on the photocatalytic decarboxylation of carboxylic acid. J Catal 2018. [DOI: 10.1016/j.jcat.2018.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
46
|
Zhang X, Liu Z, Kong Q, Liu G, Lv W, Li F, Lin X. Aquatic photodegradation of clofibric acid under simulated sunlight irradiation: kinetics and mechanism analysis. RSC Adv 2018; 8:27796-27804. [PMID: 35542726 PMCID: PMC9083450 DOI: 10.1039/c8ra03140a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/07/2018] [Indexed: 11/21/2022] Open
Abstract
Clofibric acid is one of the most frequently detected pharmaceuticals in various aquatic environments.
Collapse
Affiliation(s)
- Xiangdan Zhang
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| | - Zongchao Liu
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| | - Qingqing Kong
- School of Environmental Science and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Guoguang Liu
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| | - Wenying Lv
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| | - Fuhua Li
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| | - Xiaoxuan Lin
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou Higher Education Mega Center
- Guangzhou 510006
- China
| |
Collapse
|
47
|
Wang F, Wang Y, Li Y, Cui X, Zhang Q, Xie Z, Liu H, Feng Y, Lv W, Liu G. The facile synthesis of a single atom-dispersed silver-modified ultrathin g-C3N4 hybrid for the enhanced visible-light photocatalytic degradation of sulfamethazine with peroxymonosulfate. Dalton Trans 2018; 47:6924-6933. [DOI: 10.1039/c8dt00919h] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single-atom dispersed Ag loaded ultrathin g-C3N4 hybrid was prepared and used as a visible light-driven photocatalyst for SMT degradation in the presence of PMS.
Collapse
|
48
|
Zhao R, Gao J, Mei S, Wu Y, Wang X, Zhai X, Yang J, Hao C, Yan J. Facile synthesis of graphitic C 3N 4 nanoporous-tube with high enhancement of visible-light photocatalytic activity. NANOTECHNOLOGY 2017; 28:495710. [PMID: 29019339 DOI: 10.1088/1361-6528/aa929a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A simple and convenient method was used to synthesize a graphitic carbon nitride (g-C3N4) nanoporous-tube by using SiO2 nanoparticles as pore formers. The structure of the g-C3N4 nanoporous-tube was characterized by the SEM and TEM images. Taking photodegradation of RhB as an example, the photocatalytic activity of the as-prepared g-C3N4 nanoporous-tube was investigated. It can photodegrade 90% RhB in 40 min under visible-light irradiation and obtain a k value of 0.04491 min-1, which is 8.16 times that of bulk g-C3N4, 3.09 times that of tubular g-C3N4 and 1.48 times that of tubular g-C3N4-SiO2. The significant enhancement in photocatalytic efficiency is due to the edge effect of the pores and the special structure of the tubes. In addition, the possible mechanism of photocatalytic degradation of RhB was also proposed based on the trapping experiment of active species, which indicated that the superoxide radicals ([Formula: see text]) and the holes (h +) were the main reactive species in this photocatalyst. This work may open up a new idea of innovation in g-C3N4 structure and inspire its follow-up study.
Collapse
Affiliation(s)
- Ruiru Zhao
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|