1
|
Shu G, Zhang C, Wen Y, Pan J, Zhang X, Sun SK. Bismuth drug-inspired ultra-small dextran coated bismuth oxide nanoparticles for targeted computed tomography imaging of inflammatory bowel disease. Biomaterials 2024; 311:122658. [PMID: 38901130 DOI: 10.1016/j.biomaterials.2024.122658] [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: 01/23/2024] [Revised: 05/03/2024] [Accepted: 06/06/2024] [Indexed: 06/22/2024]
Abstract
Bismuth (Bi)-based computed tomography (CT) imaging contrast agents (CAs) hold significant promise for diagnosing gastrointestinal diseases due to their cost-effectiveness, heightened sensitivity, and commendable biocompatibility. Nevertheless, substantial challenges persist in achieving an easy synthesis process, remarkable water solubility, and effective targeting ability for the potential clinical transformation of Bi-based CAs. Herein, we show Bi drug-inspired ultra-small dextran coated bismuth oxide nanoparticles (Bi2O3-Dex NPs) for targeted CT imaging of inflammatory bowel disease (IBD). Bi2O3-Dex NPs are synthesized through a simple alkaline precipitation reaction using bismuth salts and dextran as the template. The Bi2O3-Dex NPs exhibit ultra-small size (3.4 nm), exceptional water solubility (over 200 mg mL-1), high Bi content (19.75 %), excellent biocompatibility and demonstrate higher X-ray attenuation capacity compared to clinical iohexol. Bi2O3-Dex NPs not only enable clear visualization of the GI tract outline and intestinal loop structures in CT imaging but also specifically target and accumulate at the inflammatory site in colitis mice after oral administration, facilitating a precise diagnosis and enabling targeted CT imaging of IBD. Our study introduces a novel and clinically promising strategy for synthesizing high-performance Bi2O3-Dex NPs for diagnosing gastrointestinal diseases.
Collapse
Affiliation(s)
- Gang Shu
- School of Medical Imaging, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University, Tianjin, 300203, China; Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Cai Zhang
- Department of Radiology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Ya Wen
- School of Medical Imaging, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University, Tianjin, 300203, China
| | - Jinbin Pan
- Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Xuening Zhang
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Shao-Kai Sun
- School of Medical Imaging, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University, Tianjin, 300203, China.
| |
Collapse
|
2
|
Palanisamy G, Bhuvaneswari K, Lee J, Viji A, Shkir M. Strategic rationalization for improved photocatalytic decomposition of toxic pollutants: Immobilizing Bi 2Te 3 nanorods and V 2O 5 nanoparticles over MoS 2 nanosheets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123400. [PMID: 37738763 DOI: 10.1016/j.saa.2023.123400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Researchers have become increasingly interested in solar energy based on semiconductor photocatalysts to remove hazardous pollutants and clean the environment. In this work, an efficient MoS2-Bi2Te3-V2O5 nanocomposite has been prepared through wet impregnation method. MoS2-Bi2Te3-V2O5 photocatalyst was utilized to decompose the MB and Rh B dyes. The photocatalytic efficiency (Rh B) of MoS2-Bi2Te3-V2O5 nanocomposite (95.19 %) was higher than 2.70 times of Bi2Te3 nanorods, 1.55 times of V2O5 nanoparticles, 1.68 times of MoS2 nanosheets, 1.50 times of MoS2-Bi2Te3, and 1.21 times of MoS2-V2O5 nanocomposite, respectively. Recycling tests conducted on the MoS2-Bi2Te3-V2O5 nanocomposite revealed its high stability and durability. The outcomes obtained from the scavenger test suggest that the photogenerated hydroxyl radicals play a chief role in the photocatalytic performance of Rh B dye in the MoS2-Bi2Te3-V2O5 nanocomposite, respectively. The enhanced photocatalytic performance of the MoS2-Bi2Te3-V2O5 nanocomposite is ascribed to the strong hybrid formation of Bi2Te3, V2O5, and MoS2 nanosheets, respectively. Consequently, the straightforward and readily synthesized MoS2-Bi2Te3-V2O5 nanocomposite can serve as an economical, highly effective material for environmental applications.
Collapse
Affiliation(s)
- Govindasamy Palanisamy
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea.
| | - Kandasamy Bhuvaneswari
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
| | - A Viji
- Department of Physics, Kongunadu College of Engineering and Technology, Thottiyam 621215, Tamil Nadu, India
| | - Mohd Shkir
- Department of Physics, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| |
Collapse
|
3
|
Berekute AK, Yu KP, Chuang YHB, Lin KYA. Novel visible-light-active P-g-CN-based α-Bi 2O 3/WO 3 ternary photocatalysts with a dual Z-scheme heterostructure for the efficient decomposition of refractory ultraviolet filters and environmental hormones: Benzophenones. ENVIRONMENTAL RESEARCH 2023; 234:116553. [PMID: 37406722 DOI: 10.1016/j.envres.2023.116553] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/24/2023] [Accepted: 07/02/2023] [Indexed: 07/07/2023]
Abstract
The ubiquitous and refractory benzophenone (BP)-type ultraviolet filters, which are also endocrine disruptors, were commonly detected in the aquatic matrix and could not be efficiently removed by conventional wastewater treatment processes, thus causing extensive concern. Herein, a novel ternary nanocomposite, P-g-CN/α-Bi2O3/WO3 (P-gBW), was successfully fabricated by mixing cocalcinated components and applied to the decomposition of BP-type ultraviolet filters. The dual-Z-scheme heterostructure of P-gBW enhances visible-light absorption, efficiently facilitates separation and mobility, and prolongs the lifetime of photoinduced charge carriers via double charge transfer mechanisms. The optimum 95 wt% P-gBW exhibited excellent photocatalytic activity, degrading 96% 4-hydroxy benzophenone (4HBP) within 150 min and 93% 2,2',4,4'-tetrahydroxybenzophenone (BP-2) within 100 min under visible-light illumination, respectively. The pseudo-first-order rate constant of 4HBP (1.15 h-1) was 6.8-, 3.1-, 3.3- and 2.2-fold higher than those of WO3, P-g-CN, α-Bi2O3, and P-g-CN/α-Bi2O3, respectively, while that of BP-2 (1.71 h-1) was 5.2-, 2.2-, 3.2- and 1.5-fold higher, respectively. The improved photocatalytic degradation was attributed to efficient photoinduced charge carrier separation and migration and prevented the recombination of electron holes, as verified by photoluminescence, transient photocurrent response, and electrochemical impedance spectroscopy. Trapping experiments, electron paramagnetic resonance, and band energy position indicated an efficient dual-Z-scheme heterostructure.
Collapse
Affiliation(s)
- Abiyu Kerebo Berekute
- International Ph.D. Program in Environmental Science and Technology, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Department of Chemistry, College of Natural and Computational Sciences, Arba Minch University, Arbaminch, Ethiopia
| | - Kuo-Pin Yu
- International Ph.D. Program in Environmental Science and Technology, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan.
| | - Yi-Hsueh Brad Chuang
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, Hsinchu City, 30010, Taiwan
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering and Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nano Technology, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung, Taiwan
| |
Collapse
|
4
|
Luo B, Wu C, Zhang F, Wang T, Yao Y. Preparation of Porous Ellipsoidal Bismuth Oxyhalide Microspheres and Their Photocatalytic Performances. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6035. [PMID: 36079416 PMCID: PMC9457083 DOI: 10.3390/ma15176035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Well-dispersed and uniform porous ellipsoidal-shaped bismuth oxyhalides (nominal composition: 80%BiOCl/20%BiOI) microspheres were obtained by a facile solvothermal method, in which process the use of polyvinylpyrrolidone (PVP) as template agent was found to be crucial. At 150 °C, elliptical porous particles with a particle size of 0.79 μm were formed. Instead of forming solid solutions, the study of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) shows that the prepared 80%BiOCl/20%BiOI microspheres are composite of BiOCl and BiOI in nature and the obtained crystallite size is about 5.6 nm. The optical bandgap of 80%BiOCl/20%BiOI was measured to be 2.93 eV, which is between the bandgap values of BiOCl and BiOI. The 80%BiOCl/20%BiOI microspheres were able to decompose various organic dyes (rhodamine B-RhB, methyl orange-MO, methylene blue-MB, methyl violet-MV) under an illuminated condition with the degradation rate in the order of RhB > MB > MV > MO, and 98% of RhB can be degraded in 90 min. Radical scavenger tests showed that photogenerated holes are the main active species for the photocatalytic decomposition of all of the tested organic dyes. Our results show that the obtained porous ellipsoidal-shaped 80%BiOCl/20%BiOI microspheres are promising for the degradation of various organic pollutants under the illumination of visible light.
Collapse
Affiliation(s)
- Bing Luo
- China Southern Power Grid, Guangzhou 510623, China
| | - Canfeng Wu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Fuzeng Zhang
- China Southern Power Grid, Guangzhou 510623, China
| | | | - Yingbang Yao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| |
Collapse
|
5
|
Wang L, Fan Z, Cao X, Fan P, Xie Y, Sun Q, Zhao J. Template-Free Synthesis of g-C3N4 Nanoball/BiOCl Nanotube Heterojunction with Enhanced Photocatalytic Activity. NANOMATERIALS 2022; 12:nano12152569. [PMID: 35957000 PMCID: PMC9370230 DOI: 10.3390/nano12152569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022]
Abstract
There are many reports on g-C3N4 nanosheet and BiOCl nanosheet, but few studies on other morphologies of g-C3N4 and BiOCl. Herein, a g-C3N4 nanoball/BiOCl nanotube heterojunction prepared by a simple one-step acetonitrile solvothermal method is reported. The XRD results prove that the g-C3N4/BiOCl composites can be prepared in one step. SEM results revealed that the g-C3N4 was spherical and the BiOCl was tubular. The HRTEM results indicate that g-C3N4 has an amorphous structure and that the (100) crystal plane of BiOCl borders the g-C3N4. Spherical g-C3N4 has a narrow band gap (approximately 1.94 eV), and the band gap of g-C3N4/BiOCl after modification was also narrow. When the BiOCl accounted for 30% of the g-C3N4/BiOCl by mass, the quasi-primary reaction rate constant of RhB degradation was 45 times that of g-C3N4. This successful preparation method for optimizing g-C3N4 involving simple one-step template-free synthesis may be adopted for the preparation of diverse-shapes and high-performance nanomaterials in the future.
Collapse
Affiliation(s)
- Longfei Wang
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
| | - Zheyuan Fan
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
| | - Xixi Cao
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
| | - Panfeng Fan
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
- Correspondence: (P.F.); (Y.X.); (J.Z.); Tel.: +86-791-83953373 (Y.X.)
| | - Yu Xie
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
- Correspondence: (P.F.); (Y.X.); (J.Z.); Tel.: +86-791-83953373 (Y.X.)
| | - Qing Sun
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China; (L.W.); (Z.F.); (X.C.); (Q.S.)
| | - Jinsheng Zhao
- Shandong Key Laboratory of Chemical Energy Storage and Novel Cell Technology, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
- Correspondence: (P.F.); (Y.X.); (J.Z.); Tel.: +86-791-83953373 (Y.X.)
| |
Collapse
|
6
|
Gao J, Rao S, Yu X, Wang L, Xu J, Yang J, Liu Q. Dimensional-matched two dimensional/two dimensional TiO 2/Bi 2O 3 step-scheme heterojunction for boosted photocatalytic performance of sterilization and water splitting. J Colloid Interface Sci 2022; 628:166-178. [PMID: 35914427 DOI: 10.1016/j.jcis.2022.07.112] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/14/2022] [Accepted: 07/19/2022] [Indexed: 12/17/2022]
Abstract
A Step-scheme (S-scheme) heterojunction can regulate the directional migration of powerful photogenerated carriers and realize high photocatalytic activity. Herein, we propose a novel dimensional matched S-scheme photocatalyst comprising of two-dimensional (2D) TiO2 nanosheets and 2D Bi2O3 nanosheets for environmental and energy applications, such as water sterilization and water splitting. X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance, in-situ irradiated XPS and theoretical calculations provided strong evidence that the photocarrier migration in the TiO2/Bi2O3 composite followed the S-scheme mode, which efficiently prevented the recombination of powerful photocarriers, thereby enabling the heterojunction with a strong redox ability for producing abundant reactive oxygen species. The tight and large 2D/2D interface minimized the distance of photocarrier migration to further extend the lifetime of useful photocarriers (active radicals for sterilization and photoelectrons for H2 generation). The 2D/2D TiO2/Bi2O3 heterojunction demonstrated an improved photocatalytic antibacterial performance with complete inactivation of 4.63 × 107 CFU mL-1Escherichia coli cells within 6 h in water. In addition, the heterojunction displayed a H2 generation rate of 12.08 mmol h-1g-1 through water splitting process. This study provides a potential bifunctional photocatalyst for minimizing the adverse impact of pollution on the environment.
Collapse
Affiliation(s)
- Jingsong Gao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Shaosheng Rao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Xiaohui Yu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China.
| | - Lele Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Jinghang Xu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Juan Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China.
| | - Qinqin Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China.
| |
Collapse
|
7
|
Kaid M, Khder AS, Ahmed SA, Ibrahim AA, Altass HM, Alsantali RI, Jassas RS, Khder MA, Al-Rooqi MM, Moussa Z, Ahmed AI. High-Efficacy Hierarchical Dy 2O 3/TiO 2 Nanoflower toward Wastewater Reclamation: A Combined Photoelectrochemical and Photocatalytic Strategy. ACS OMEGA 2022; 7:17223-17233. [PMID: 35647445 PMCID: PMC9134253 DOI: 10.1021/acsomega.2c01090] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/28/2022] [Indexed: 06/15/2023]
Abstract
Developing a sustainable photocatalyst is crucial to mitigate the foreseeable energy shortage and environmental pollution caused by the rapid advancement of global industry. We developed Dy2O3/TiO2 nanoflower (TNF) with a hierarchical nanoflower structure and a near-ideal anatase crystallite morphology to degrade aqueous rhodamine B solution under simulated solar light irradiation. The prepared photocatalyst was well-characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, energy-dispersive spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller, diffuse reflectance UV-vis spectra, and X-ray photoelectron spectroscopy. Further analysis was performed to highlight the photoelectrochemical activity of the prepared photocatalysts such as electrochemical impedance spectroscopy, linear sweep voltammetry, photocurrent response, and a Mott-Schottky study. The crystalline Dy2O3/TNF exhibits superb photocatalytic activity attributed to the improved charge transfer, reduced recombination rate of the electron-hole pairs, and a remarkable red-shift in light absorption.
Collapse
Affiliation(s)
- Mahmoud
M. Kaid
- Department
of Chemistry, Faculty of Science, Mansoura
University, 35516 Mansoura, Egypt
| | - Abdelrahman S. Khder
- Department
of Chemistry, Faculty of Science, Mansoura
University, 35516 Mansoura, Egypt
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Saleh A. Ahmed
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
- Chemistry
Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Amr A. Ibrahim
- Department
of Chemistry, Faculty of Science, Mansoura
University, 35516 Mansoura, Egypt
| | - Hatem M. Altass
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Reem I. Alsantali
- Department
of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, 21944 Taif, Saudi Arabia
| | - Rabab S. Jassas
- Department
of Chemistry, Jamoum University College, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Menna A. Khder
- Department
of Chemistry, Faculty of Science, Mansoura
University, 35516 Mansoura, Egypt
| | - Munirah M. Al-Rooqi
- Chemistry
Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ziad Moussa
- Department
of Chemistry, College of Science, United
Arab Emirates University, P.O. Box 15551 Al Ain, Abu Dhabi, United Arab Emirates
| | - Awad I. Ahmed
- Department
of Chemistry, Faculty of Science, Mansoura
University, 35516 Mansoura, Egypt
| |
Collapse
|
8
|
Effective Photocatalytic Degradation of Organic Dyes Using ZNC/rGO Nanocomposite Photocatalyst Derived from ZIF-8/rGO Thermolysis for Water Treatment. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
9
|
Zeng P, Zhang WD. Photocatalytic hydrogen evolution over a nickel complex anchoring to thiophene embedded g-C 3N 4. J Colloid Interface Sci 2021; 596:75-88. [PMID: 33838327 DOI: 10.1016/j.jcis.2021.03.080] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/12/2021] [Accepted: 03/13/2021] [Indexed: 11/18/2022]
Abstract
Evolution of hydrogen from water by utilizing solar energy and photocatalysts is one of the most promising ways to solve energy crisis. However, designing a cost-effective and stable photocatalyst without any noble metals is of vital importance for this process. Herein, an extremely active molecular complex cocatalyst NiL2(Cl)2 is successfully designed. After being covalently linked to thiophene-embedded polymeric carbon nitride (TPCN), the hybrid catalyst NiL2(Cl)2/TPCN exhibits extraordinary H2 production activity of 95.8 μmol h-1 without Pt (λ ≥ 420 nm), together with a remarkable apparent quantum yield of 6.68% at 450 nm. In such a composite catalyst, the embedded π-electron-rich thiophene-ring not only extends the π-conjugated system to enhance visible light absorption, but also promotes the charge separation through electron-withdrawing effect. It turns out that the CN covalent bonds formed between NiL2(Cl)2 and TPCN skeleton accelerate the transfer of electrons to the Ni active sites. Our finding reveals that the strategy of embedding π-electron-rich compounds to graphitic carbon nitride provides potentials to develop excellent photocatalysts. The strong covalent combination of molecular complexes cocatalyst onto organic semiconductors represents an important step towards designing noble-metal-free photocatalysts with superior activity and high stability for visible light driven hydrogen evolution.
Collapse
Affiliation(s)
- Peng Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, PR China
| | - Wei-De Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, PR China.
| |
Collapse
|
10
|
Nasrollahzadeh M, Akbari R, Sakhaei S, Nezafat Z, Banazadeh S, Orooji Y, Hegde G. Polymer supported copper complexes/nanoparticles for treatment of environmental contaminants. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115668] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
11
|
Mc Eleney C, Alves S, Mc Crudden D. Novel determination of Cd and Zn in soil extract by sequential application of bismuth and gallium thin films at a modified screen-printed carbon electrode. Anal Chim Acta 2020; 1137:94-102. [PMID: 33153613 DOI: 10.1016/j.aca.2020.08.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/17/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
This study describes a novel electrochemical technique for the detection of bioavailable cadmium(II) (Cd) and zinc(II) (Zn), in real soil samples. This was made possible by the sequential deposition of bismuth and gallium thin films on modified screen-printed carbon electrodes (SPEs). A range of graphitic modifications were evaluated, and a reduced graphene oxide/graphitic carbon nitride (RGO/g-C3N4) modification proved most suitable. Electrochemical characterisation demonstrated superior stability, attributed to the functional groups of GO, and an increased electron transfer rate, attributed to the intercalated g-C3N4. For voltammetric analysis, cadmium was determined in acetate buffer (pH 4.6) using a bismuth thin film (BiTF). Zn was then determined in the same cell, after adjustment of the pH to 5.1, using a gallium thin film (GaTF). The rationale for two separate thin films is described. Optimisations, such as concentration of bismuth(III), gallium(III), potassium ferrocyanide, pH and deposition potentials, were conducted in the matrix of real samples. The LODs and LOQs were determined in the extracted soil matrix as 0.01 and 0.03 mg kg-1, respectively, for bioavailable Cd and 0.01 and 0.04 mg kg-1, respectively, for bioavailable Zn. Good agreement was observed for Cd and Zn levels in numerous soil samples when compared to the established technique of ICP-OES. This approach opens up the possibility for rapid on-site portable testing of Cd and Zn in real soil samples to determine the probability of Cd uptake by crops.
Collapse
Affiliation(s)
- Christopher Mc Eleney
- Department of Science, Letterkenny Institute of Technology, Letterkenny, County Donegal, F92 FC93, Ireland
| | - Sheila Alves
- Teagasc, Crops Research Centre, Oak Park, Carlow, R93 XE12, Ireland
| | - Denis Mc Crudden
- Department of Science, Letterkenny Institute of Technology, Letterkenny, County Donegal, F92 FC93, Ireland.
| |
Collapse
|
12
|
Chouchene B, Gries T, Balan L, Medjahdi G, Schneider R. Graphitic carbon nitride/SmFeO 3 composite Z-scheme photocatalyst with high visible light activity. NANOTECHNOLOGY 2020; 31:465704. [PMID: 32853176 DOI: 10.1088/1361-6528/abadc7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, novel heterostructured photocatalysts associating graphitic carbon nitride (g-CN) and SmFeO3 were prepared via a mixing-ultrasonication process. Structural, optical and morphological characterizations demonstrate that the interfacial junction between g-CN and SmFeO3 is well established for all g-CN/SmFeO3 composites prepared with g-CN:SmFeO3 weight ratio of 20:80, 50:50 and 80:20. The g-CN/SmFeO3 (80:20) composite exhibits the highest photocatalytic activity for the degradation of pollutants like the Orange II dye and the tetracycline hydrochloride antibiotic under visible light irradiation. This high photocatalytic activity originates from the enhanced light absorption over the whole visible region compared to pure g-CN and from the improved separation and transfer of photogenerated electron/hole pairs as demonstrated by photoluminescence and photocurrent measurements. A Z-scheme charge carrier transfer mechanism was demonstrated for the photocatalytic reactions. The g-CN/SmFeO3 (80:20) catalyst was also demonstrated to be stable and can be reused up to six times without significant alteration of the activity.
Collapse
Affiliation(s)
- Bilel Chouchene
- Université de Lorraine, CNRS, LRGP, Nancy F-54000, France. Université de Lorraine, CNRS, IJL, Nancy F-54000, France
| | | | | | | | | |
Collapse
|
13
|
Munusamy TD, Yee CS, Khan MMR. Construction of hybrid g-C3N4/CdO nanocomposite with improved photodegradation activity of RhB dye under visible light irradiation. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.05.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
14
|
Wang T, Liu X, Han D, Ma C, Wei M, Huo P, Yan Y. Biomass derived the V-doped carbon/Bi 2O 3 composite for efficient photocatalysts. ENVIRONMENTAL RESEARCH 2020; 182:108998. [PMID: 31863945 DOI: 10.1016/j.envres.2019.108998] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/29/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
This work focused on the utilization of biological extract for the preparation of lignin-based carbon composites materials and used in the field of photocatalysis. A straightforward one-step carbonization way has been developed to prepare vanadium-doped lignin-based carbon/Bi2O3 composites photocatalyst by using sodium lignosulfonate as the carbon source and catalyst. The application of lignin as the carbon source to form photocatalyst support tends to control the uniform distribution. At the same time, sodium lignosulfonate as the catalyst could break down the BiVO4 during carbonization process. A series of characterizations demonstrated the BiVO4 was transformed into Bi2O3 and vanadium-doped lignin-based carbon. The possible synthesis process was proposed. Moreover, the novel V-doped carbon/Bi2O3 composites photocatalyst displayed higher photocatalytic activity than bare BiVO4. A possible photocatalytic mechanism was also discussed. This work provided new insight into the lignin-based carbon materials.
Collapse
Affiliation(s)
- Tao Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, PR China; Institute of Green Chemistry and Chemical Technology, Jiangsu University, 212013, Zhenjiang, PR China
| | - Xiqing Liu
- School of Material Science and Engineering, Jiangsu University, 212013, Zhenjiang, PR China
| | - Donglai Han
- Institute of Green Chemistry and Chemical Technology, Jiangsu University, 212013, Zhenjiang, PR China
| | - Changchang Ma
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, PR China; Department of Chemistry, Dongguk University, Seoul, 04620, Republic of Korea
| | - Maobin Wei
- College of Physics, Jilin Normal University, 13600, Siping, PR China
| | - Pengwei Huo
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, PR China; Institute of Green Chemistry and Chemical Technology, Jiangsu University, 212013, Zhenjiang, PR China
| | - Yongsheng Yan
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, PR China; Institute of Green Chemistry and Chemical Technology, Jiangsu University, 212013, Zhenjiang, PR China.
| |
Collapse
|
15
|
Selenium-incorporated polymeric carbon nitride for visible-light photocatalytic regio-specific epoxidation of β-ionone. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110715] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
16
|
Construction of ultrathin MoS 2/Bi 5O 7I composites: Effective charge separation and increased photocatalytic activity. J Colloid Interface Sci 2020; 560:475-484. [PMID: 31679776 DOI: 10.1016/j.jcis.2019.10.081] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 02/05/2023]
Abstract
Ultrathin MoS2 nanosheet hybridized Bi5O7I (MoS2/Bi5O7I) nanorods were synthesized via a reactable ionic liquid assisted solvothermal process for the first time. The photocatalytic activity of MoS2/Bi5O7I nanorods was determined by photodegrading bisphenol A (BPA), tetracycline hydrochloride (TC) and ciprofloxacin (CIP) under visible light irradiation. Experimental results showed that MoS2/Bi5O7I owned the excellent photocatalytic properties and photostability. The efficient visible light driven photocatalytic performance was due to a larger specific surface area of MoS2, which increased the close interfacial contact between pollutants and photocatalysts. Meanwhile, the introduction of ultrathin MoS2 nanosheet was conducive to the separation and utilization of photoinduced charge carriers, thus further suppressed high recombination rate in pure Bi5O7I nanorods. Moreover, a possible charge transfer path in MoS2/Bi5O7I composite material was also put forward.
Collapse
|
17
|
Sun S, Fan E, Xu H, Cao W, Shao G, Fan B, Wang H, Zhang R. Enhancement of photocatalytic activity of g-C 3N 4 by hydrochloric acid treatment of melamine. NANOTECHNOLOGY 2019; 30:315601. [PMID: 30889554 DOI: 10.1088/1361-6528/ab10fd] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Modified g-C3N4 samples (g-X, where X corresponds to the number of hours of acid treatment of the melamine) with outstanding photocatalytic performance were prepared by using hydrochloric acid-treated melamine as a precursor and calcining at 550 °C for 2 h. An x-ray diffractometer, field-emission scanning electron microscope, infrared spectrometer, N2 adsorption-desorption test, x-ray photoelectron spectroscopy, and ultraviolet-visible diffuse-reflectance spectroscopy analysis were carried out to characterize the phase composition, microstructure, chemical structure, specific surface area (SSA), chemical states, elemental composition and optical properties of the samples, respectively. The photocatalytic performance of the samples was evaluated by degrading the Rhodamine B (RhB) aqueous solution. The results showed that the crystal structure and vibration bands of melamine changed due to the reaction with hydrochloric acid. The crystallinity and grain size of g-C3N4 in g-X (X = 1, 2, 4, 6, 8, 10) reduced, and the SSA values of g-X increased compared to that of the g-0 sample, which was synthesized from pristine melamine. The g-X samples exhibited excellent photocatalytic activity towards degradation of RhB compared to g-0. The photocatalytic activity of the g-X samples increased gradually as the acid treatment time of the melamine increased from 1 h to 2 h, and then decreased gradually with the extension of the acid treatment time. The rate constant (k) values of g-X are higher than that of g-0. g-2 presented the highest rate constant (k = 0.052 min-1), which was 5.5 times higher than that of g-0. The improved photocatalytic activity of the g-X samples was attributed to the higher SSA value, the appearance of surface defects, the outstanding photo-carrier separation efficiency and stronger light harvesting ability of g-X, with the last two factors being more significant. Acid treatment of melamine is helpful in the preparation of high performance g-C3N4 photocatalyst, and the microstructure and photocatalytic performance of g-C3N4 were affected significantly by the acid treatment time.
Collapse
Affiliation(s)
- Shiping Sun
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Zhang L, Hou Q, Zhou Y, Wang J. Phosphotungstic anion-paired quinoline salt for heterogeneous photocatalytic hydroxylation of benzene to phenol with air. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|