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Yao C, Zhang J, Gao L, Jin C, Wang S, Jiang W, Liang H, Feng P, Li X, Ma L, Wei H, Sun C. Enhancing sodium percarbonate catalytic wet peroxide oxidation with artificial intelligence-optimized swirl flow: Ni single atom sites on carbon nanotubes for improved reactivity and silicon resistance. CHEMOSPHERE 2024; 346:140606. [PMID: 37939928 DOI: 10.1016/j.chemosphere.2023.140606] [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: 09/21/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/10/2023]
Abstract
H2O2 is widely used in the treatment of refractory organic pollutants.However, due to its explosive and corrosive chemical characteristics, H2O2 will bring great safety risks and troubles in transportation.So we chose sodium percarbonate(SPC) to be used in catalytic wet peroxide oxidation enhanced by swirl flow(SF-CWPO) and we designed carbon nanotubes with Ni single atom sites(Ni-NCNTs/AC) to activate SPC to treat an m-cresol wastewater containing Si.Meanwhile, artificial intelligence which used Artificial neural network (ANN) was used to optimize the conditions.Under the conditions of pH = 9.27, reaction time of 8.91 min, m-cresol concentration is 59.09 mg L-1, SPC dosage is 2.80 g L-1 and Na2SiO3·9H2O dosage is 77.27 mg L-1, the degradation rate of total organic carbon(TOC) and m-cresol reaches 94.37% and 100%, respectively.Finally, the applicability of Ni-NCNTs/AC-SPC-SF-CWPO technology was evaluated in a wastewater system of a sewage treatment enterprise and Fourier transform ion cyclotron resonance mass spectrum(FT-ICR MS) analysis and chemical oxygen demand(COD) analysis showed the great ability of Ni-NCNTs/AC-SPC-SF-CWPO technology to treat wastewater.It is believed that this paper is of great significance to the design and construction of the in-depth research and industrial application of SF-CWPO.
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Affiliation(s)
- Chenxing Yao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Zhang
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, China
| | - Liansong Gao
- Shenyang Jianzhu University, Shenyang, 110168, China
| | - Chengyu Jin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shengzhe Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenshuo Jiang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hanrui Liang
- Guangxi Normal University, Guilin, 541006, China
| | - Pan Feng
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xianru Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Lei Ma
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, China
| | - Huangzhao Wei
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
| | - Chenglin Sun
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Hadi A, Niaei A, Seifi A, Rasoulzadeh Y. The impact of operational factors on degradation of formaldehyde as a human carcinogen using Ag 3 PO 4 /TiO 2 photocatalyst. Health Promot Perspect 2023; 13:47-53. [PMID: 37309430 PMCID: PMC10257563 DOI: 10.34172/hpp.2023.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 01/21/2023] [Indexed: 06/14/2023] Open
Abstract
Background: The International Agency for Research on Cancer (IARC) identified formaldehyde as a carcinogen in 2004, yet formaldehyde is widely used in health care settings and various industries. In recent years, photocatalytic oxidation has been developed as a potential technique for removing pollutants arising from organic chemical agents and consequently promoting the health indices. This study investigated the effect of operational factors in optimizing formaldehyde removal from the air using Ag3 PO4 /TiO2 photocatalyst. Methods: An experimental study was designed to investigate the effect of operational factors on the efficiency of formaldehyde degradation. The variables investigated in this study include pollutant retention time, initial pollutant concentration and relative humidity. Sol-gel method was used to synthesize the nano-composite photocatalyst. An ideal experimental design was carried out based on Box-Behnken design (BBD) with response surface methodology (RSM). The sample size in this study includes all the glasses coated with Ag3 PO4 /TiO2 photocatalyst. Results: The maximum formaldehyde degradation of 32% was obtained at the initial concentration of 2 ppm, 20% relative humidity, and 90 minutes of retention time. Based on the statistical results, the correlation coefficient of the present study for the impact of operational factors on formaldehyde degradation was 0.9635, which means that there is only 3.65% probability of error in the model. Conclusion: The operational factors examined in this study (retention time, relative humidity, and initial formaldehyde concentration) were significantly influential in the degradation efficiency of formaldehyde by the photocatalyst. Due to the high exposure of employees and clients of health and treatment centers to formaldehyde as a carcinogenic substance, the results of this study can be used in ventilation systems to remove environmental pollutants in health care centers and other occupational settings.
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Affiliation(s)
- Asghar Hadi
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aligholi Niaei
- Catalyst & Reactor Research Lab, Department of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Azam Seifi
- Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
- Department of Chemistry, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Yahya Rasoulzadeh
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Zou M, Zhu H, Dong M, Zhao T. Template Method for Synthesizing Hierarchically Porous MIL-101(Cr) for Efficient Removal of Large Molecular Dye. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5763. [PMID: 36013899 PMCID: PMC9416310 DOI: 10.3390/ma15165763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
As one of the most important prototypical chromium-based MOFs, MIL-101(Cr) is well-studied and widely employed in various scientific fields. However, due to its small capture window sizes and curved internal apertures, its application in large molecular removal is quite limited, and given its high stability and high synthetic temperature (>200 °C), it is difficult to achieve hierarchically porous MIL-101(Cr). In our study, hierarchically porous MIL-101(Cr) involving a high macro-/meso-/micropores ratio was designed and synthesized using acetic acid as an additive and silicon dioxide (SiO2) nanoparticles as a template. The optimal hierarchically porous MIL-101(Cr) (A-4) possessed a high specific surface area (2693 m2 g−1) and an abundant macro-/mesoporous structure with the addition of SiO2 of 200 mg. Compared with the control sample (A-0) with a less macro-/mesoporous structure, A-4 showed good adsorption properties for both coomassie brilliant blue R-250 (CBB, 82.1 mg g−1) and methylene blue (MB, 34.3 mg g−1) dyes, which were 1.36 times and 9.37 times higher than those of A-0. Moreover, A-4 also had good recyclability, and the removal rate of CBB was still higher than 85% after five cycles of adsorption.
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Nanofused Hierarchically Porous MIL-101(Cr) for Enhanced Methyl Orange Removal and Improved Catalytic Activity. MATERIALS 2022; 15:ma15103645. [PMID: 35629671 PMCID: PMC9146841 DOI: 10.3390/ma15103645] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 01/11/2023]
Abstract
Hierarchically porous MIL-101(Cr) (H-MIL-101(Cr)) with meso/macro-pores was directly prepared via nanofusion progress by using butyric acid as a modulating agent. In the methyl orange (MO) adsorption experiments, H-MIL-101(Cr) showed a high adsorption capability of 369.8 mg g−1, which was 1.52-fold greater than that of pristine MIL-101(Cr) (P-MIL-101(Cr)). While in the oxidation reaction of indene and 1-dodecene tests, H-MIL-101(Cr) presented much higher catalytic efficiency, with turnover frequency (TOF) values of 0.7242 mmol g−1 min−1 and 0.1492 mmol g−1 min−1, respectively, which were 28% and 34% greater than that in the case of P-MIL-101(Cr). Thus, compared with P-MIL-101(Cr), H-MIL-101(Cr) exhibited better removal efficiency and higher levels of activity in the oxidation reactions of indene and 1-dodecene. The unique structure of H-MIL-101(Cr) also contributed to its superior performance in these processes.
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Low-Temperature and Additive-Free Synthesis of Spherical MIL-101(Cr) with Enhanced Dye Adsorption Performance. INORGANICS 2022. [DOI: 10.3390/inorganics10030033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The chromium-benzenedicarboxylate metal–organic framework (MOF), MIL-101(Cr), is one of the most well-investigated and widely used prototypical MOFs. Regarding its synthesis, the use of a toxic modulator (usually HF) and high reaction temperature (220 °C) are the main factors hindering its further expansion of production and utilization. In fact, high quality MIL-101(Cr) crystals can be prepared at a much lower temperature (160 °C) with spherical morphology via an additive-free approach. Compared to traditional octahedral MIL-101(Cr), the spherical MIL-101(Cr) possesses higher adsorption performance toward dye molecules, including methyl orange (MO) and rhodamine B (RB). The results suggest that toxic additives and high reaction temperatures are not essential in the synthesis of MIL-101(Cr), and the fabrication of spherical MIL-101(Cr) may offer a facile and effective pathway for the large-scale industrial application of MIL-101(Cr).
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Lin Z, Meng M, Ding H, Zhang Q, Duan C, Chen C, Huang S, Zhou Z. Synthesis and characterization of Cu xO/Bi 2O 3 oxides for removal of HCHO under visible light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:69059-69073. [PMID: 34286429 DOI: 10.1007/s11356-021-15294-3] [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: 10/17/2020] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
CuxO/Bi2O3 oxides grown on nickel foam were synthesized via an electrodeposition method to degrade indoor HCHO under visible light irradiation and fully characterized by XRD, SEM, FT-IR, and UV-Vis technologies. The characterization results showed that the CuxO/Bi2O3 oxides were successfully loaded on nickel foam and the visible light response spectrum was expanded to 740 nm. Plackett-Burman design combined with central composite design has been used to optimize factors that affect HCHO removal performance. The results demonstrated that bismuth nitrate content, polyethylene glycol 600 content, sintering time, and lactic acid concentration were the four most important factors affecting the HCHO removal performance over CuxO/Bi2O3 sample. The optimum CuxO/Bi2O3 sample could degrade 88.796% of HCHO in 300 min at the conditions of 4.28 mol/L lactic acid, 4.86% polyethylene glycol 600, 194.03 min sintering time, and 45.83 g bismuth nitrate, and the HCHO removal rate remained 82.3% after five cycles. A plausible mechanism for the degradation of HCHO under visible light irradiation was proposed. This work provides a feasible solution for removing indoor formaldehyde in the field of photocatalysis.
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Affiliation(s)
- Zhihao Lin
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Mianwu Meng
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China.
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, China, Guilin, Guangxi, 541004, PR China.
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China.
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China.
| | - Hua Ding
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Qi Zhang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Chaomin Duan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Chaoshu Chen
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
| | - Siyu Huang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, China, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
| | - Zhenming Zhou
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
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Zhang W, Li C, Tian Z, Hou Z. Structural, photocatalytic and photoelectrochemical properties of porous ZnO nanosheets prepared by air cold plasma. NANOTECHNOLOGY 2021; 32:505712. [PMID: 34517356 DOI: 10.1088/1361-6528/ac2650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Porous ZnO nanosheets with different thickness were prepared on zinc substrate by air cold plasma for photocatalytic degradation and photoelectrochemical water splitting. The ZnO nanosheets consisted of nanocrystallines with high-density oxygen-related defects characterized by the strong red luminescence. The UV absorption tended to be saturated as the thickness increased, and the saturation occurred at a thickness of about 2.3μm. Under UV irradiation (365 nm), the 2.3μm thick sample with higher content of oxygen vacancies and oxygen interstitials showed the highest photocatalytic activity (and higher than P25 TiO2) in degradation of gaseous ethyl acetate. Due to the excellent UV-vis absorption ability and the effective transfer of photogenerated carriers, the ZnO nanosheets with thickness of 3.3μm showed a photocurrent density as high as 0.22 mA cm-2at -0.28 V (versus Ag/AgCl) under AM 1.5 G 100 mW cm-2.
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Affiliation(s)
- Wei Zhang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Changlin Li
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Zunyi Tian
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Zhongyu Hou
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Thirunavukkarasu GK, Monfort O, Motola M, Motlochová M, Gregor M, Roch T, Čaplovicová M, Lavrikova AY, Hensel K, Brezová V, Jerigová M, Šubrt J, Plesch G. Ce ion surface-modified TiO 2 aerogel powders: a comprehensive study of their excellent photocatalytic efficiency in organic pollutant removal. NEW J CHEM 2021. [DOI: 10.1039/d0nj05976e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The surface modification of TiO2 aerogel powders by cerium ions has led to enhanced photoinduced properties.
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