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Zhang Z, Zhu G, Liu Y, Zhou X, Lin B, Qi Z, Zhang S, Yang Y, Li X, Jin R, Zheng M. Characteristics and degradation mechanisms of polychlorinated naphthalenes in surface soil in Yangtze River Delta, China. CHEMOSPHERE 2024; 360:142398. [PMID: 38789053 DOI: 10.1016/j.chemosphere.2024.142398] [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: 12/28/2023] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
Both thermal and environmental processes are significant factors influencing the existing characteristics, e.g., congener distributions, and existing levels, of polychlorinated naphthalenes (PCNs) in the environment. Soil plays an important role in the life cycle of PCNs, but degradation of PCNs in soils has never been reported. In this study, we collected surface soil samples from 13 cities in the Yangtze River Delta, which is one of the most crowded areas of China and analyzed the samples for 75 PCNs. The long-range transportation from polluted areas was the major source for PCNs in remote areas, but the PCN profiles in remote areas reported in our previous studies were different from those in human settlement in this study, indicating there is a transformation of PCNs after emissions from anthropogenic activities. Two experiments were then designed to reveal the degradation mechanisms, including influencing factors, products, and pathways, of PCNs in surface soils. Based on the experiments, we found that the major factor driving the losses of PCNs in surface soils was volatilization, followed by photo irradiation and microbial metabolism. Under photo-irradiation, the PCN structures would be destroyed through a process of dechlorination followed by oxidation. In addition, the dechlorination pathways of PCNs have been established and found to be significantly influenced by the structure-related parameters.
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Affiliation(s)
- Zherui Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guohua Zhu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Yahui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Zhou
- Zhejiang Key Laboratory of Ecological and Environmental Monitoring, Forewarning and Quality Control, Zhejiang Ecological and Environmental Monitoring Center, Hangzhou, 310000, China.
| | - Bingcheng Lin
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Ziyuan Qi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shanshan Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yueyao Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rong Jin
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China.
| | - Minghui Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
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Hernández-Tenorio R. Hydroxylated transformation products of pharmaceutical active compounds: Generation from processes used in wastewater treatment plants and its environmental monitoring. CHEMOSPHERE 2024; 349:140753. [PMID: 38006923 DOI: 10.1016/j.chemosphere.2023.140753] [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: 09/18/2023] [Revised: 10/28/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
Pharmaceutical active compounds (PhACs) are organic pollutants detected in wastewater and aquatic environments worldwide in concentrations ranging from ng L-1 to μg L-1. Wastewater effluents containing PhACs residues is discharged in municipal sewage and, subsequently collected in municipal wastewater treatment plants (WWTPs) where are not entirely removed. Thus, PhACs and its transformation products (TPs) are discharged into water bodies. In the current work, the transformation of PhACs under treatments used in municipal WWTPs such as biological, photolysis, chlorination, and ozonation processes was reviewed. Data set of the major transformation pathways were obtained of studies that performed the PhACs removal and TPs monitoring during batch-scale experiments using gas and liquid chromatography coupled with tandem mass spectrometry (GC/LC-MS/MS). Several transformation pathways as dealkylation, hydroxylation, oxidation, acetylation, aromatic ring opening, chlorination, dehalogenation, photo-substitution, and ozone attack reactions were identified during the transformation of PhACs. Especially, hydroxylation reaction was identified as transformation pathway in all the processes. During the elucidation of hydroxylated TPs several isobaric compounds as monohydroxylated and dihydroxylated were identified. However, hydroxylated TPs monitoring in wastewater and aquatic environments is a topic scarcely studied due to that has no environmental significance, lack of available analytic standars of hydroxylated TPs and lack of analytic methods for their identification. Thus, screening strategy for environmental monitoring of hydroxylated TPs was proposed through target and suspect screening using GC/LC-MS/MS systems. In the next years, more studies on the hydroxylated TPs monitoring are necessary for its detection in WWTPs effluents as well as studies on their environmental effects in aquatic environments.
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Affiliation(s)
- Rafael Hernández-Tenorio
- Centro de Investigación y Asistencia en Tecnología y Diseño Del Estado de Jalisco A.C., Sede Noreste, Vía de La Innovación 404, Autopista Monterrey-Aeropuerto Km 10, Parque PIIT, Apodaca, Nuevo León, C.P. 66628, Mexico.
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3
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Xueyan L, Guanlong W, Chenrui L, Xiaoli D, Xiufang Z. New insight into enhanced photocatalytic selectivity of g-C 3N 4 by nitrogen vacancy introduction: Experimental study and theoretical calculation. ENVIRONMENTAL RESEARCH 2022; 212:113390. [PMID: 35525289 DOI: 10.1016/j.envres.2022.113390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/22/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Constructing photocatalyst with both high efficiency and selectivity is highly desired in water treatment process. However, it is difficult to realize the selectivity of photocatalysis due to the non-selective oxidative species produced in this process. Herein, for the first time, the photocatalytic selectivity was achieved on g-C3N4 (CN) through N vacancy introduction for effective removal of organic pollutants, and the mechanism of vacancy induced selectivity enhancement was studied. The nitrogen vacancy modified CN (VCN) showed enhanced photocatalytic activity and unique selectivity towards phenolic compounds with electron-donating group, whose kinetic constant for p-aminophenol (p-NH2) degradation was 5.95 times higher than that over CN. Moreover, VCN photocatalytic system also displayed similar selectivity in binary pollutant systems. Characteristics and theoretical calculation results confirmed the enhanced photocatalytic performance and selectivity of VCN was mainly attributed to the effect of N vacancy. On one hand, electron-deficient N vacancy enhanced the adsorption of the O2 and phenolic compounds, which promoted the production of O2•- and strengthened the photocatalytic surface reaction. On the other hand, the N vacancy preferred to adsorb the electron-donating groups of phenolic compounds, which resulted in their selective removal.
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Affiliation(s)
- Li Xueyan
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Wang Guanlong
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Lan Chenrui
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Dong Xiaoli
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Zhang Xiufang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China.
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4
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Photodegradation processes of oxcarbazepine under solar simulated radiation: Analysis of transformation products. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Chen J, Zhang L, Zhu W, Li G, An T. Atomic-level insight into effect of substrate concentration and relative humidity on photocatalytic degradation mechanism of gaseous styrene. CHEMOSPHERE 2022; 291:133074. [PMID: 34838837 DOI: 10.1016/j.chemosphere.2021.133074] [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: 10/05/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
Substrate concentration and relative humidity (RH) impact the photocatalytic efficiency of industrial aromatic hydrocarbons, but how they influence intermediate formation and degradation pathway remains unclear. With the help of oxygen isotope tracing method, the effects of these two environmental parameters on degradation mechanism of styrene were revealed at atomic level. Increasing styrene concentration favored product formation, which was however inhibited by RH elevation. Gaseous products were not directly formed in gaseous phase, but originated from desorption of interfacial intermediates. The volatile aldehydes and furans further exchanged their 16O with 18O in H218O. Increase of RH showed higher enhancement on 18O distribution in all products and pathways than that of substrate concentration. Low RH preferred high generation of 16O2•- and (16)1O2, dominating reaction to form 1-phenyl-1,2-ethandiol, 2-hydroxy-1-phenyl-ethanon and phenylglyoxal monohydrate in sequence. Successive production of benzyl alcohol, benzaldehyde and benzoic acid through the reaction of styrene with promoted •18OH by increasing RH became predominant. Hydration was firstly observed and confirmed as an important gaseous transformation step of aldehyde and furan products. Our findings provide a deep insight into photocatalytic degradation mechanism of aromatic hydrocarbons regulated by environmental parameters to further improve their industrial purification efficiency, and are helpful predicting environmental geochemistry fate of organics and preventing their negative impact on natural environment.
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Affiliation(s)
- Jiangyao Chen
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Liyun Zhang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Weikun Zhu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guiying Li
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Taicheng An
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
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6
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Zhao C, Wang Z, Chen X, Chu H, Fu H, Wang CC. Robust photocatalytic benzene degradation using mesoporous disk-like N-TiO2 derived from MIL-125(Ti). CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63516-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Yang H, Xue W, Liu M, Yu K, Yu W. Carbon doped Fe 3O 4 peroxidase-like nanozyme for mitigating the membrane fouling by NOM at neutral pH. WATER RESEARCH 2020; 174:115637. [PMID: 32105995 DOI: 10.1016/j.watres.2020.115637] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/18/2020] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
Oxidation is a widely used method in drinking water treatment to mitigate the membrane fouling caused by the natural organic matters (NOM) from the surface water during ultra-filtration (UF) and nano-filtration (NF) processes, and H2O2 is one of the common oxidants for it. However, the oxidation capability of H2O2 at neutral pH is lower, compared to the acidic and alkaline conditions. In order to improve the efficiency of NOM oxidation at neutral pH, a carbon-doped Fe3O4 peroxidase-like nanozyme (CFPN) was synthesized in this study and used as a high-performance catalyst for H2O2 to generate hydroxyl radical. The oxygen-containing groups on the carbon structure of CFPN can form an acidic microenvironment, allowing H2O2 to produce hydroxyl radical by catalysis in neutral conditions. The results of hydrophilicity analysis, zeta potential, high-performance liquid size exclusion chromatography (HPSEC), Fourier transform infrared spectrum (FTIR) and flux indicated that the hydroxyl radical can oxidize the hydrophobic matters of humic acid (HA) into hydrophilic matters by Fenton reaction or electrophilic addition reaction, which can mitigate the fouling of NF membranes. The results of the same test for the bovine serum albumin (BSA) indicated that the hydroxyl radical can mitigate the fouling of UF membranes by degrading the tertiary and secondary structures of BSA and partly oxidizing the side chain groups. In addition, two types of surface water samples were used to verify the above mechanism, and the results indicated that the hydroxyl radical treatment at neutral pH is a new viable and effective strategy to significantly mitigate the NOM fouling of UF and NF membranes.
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Affiliation(s)
- Hankun Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | - Wu Xue
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | - Mengjie Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | - Kai Yu
- Department of Clinical Engineering, Ningbo Urology & Nephrology Hospital, No.998, Qian He Road, Yinzhou District, Ningbo, Zhejiang Province, 315100, People's Republic of China
| | - Wenzheng Yu
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China.
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8
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Cao X, Han T, Peng Q, Chen C, Li Y. Modifications of heterogeneous photocatalysts for hydrocarbon C–H bond activation and selective conversion. Chem Commun (Camb) 2020; 56:13918-13932. [DOI: 10.1039/d0cc05785a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This feature article summarizes the recent progress in the modification of heterogeneous photocatalysts for photocatalytic hydrocarbons’ C–H bond activation.
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Affiliation(s)
- Xing Cao
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Tong Han
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Qing Peng
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Chen Chen
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yadong Li
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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9
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10
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Kong L, Fang G, Kong Y, Xie M, Natarajan V, Zhou D, Zhan J. Cu 2O@β-cyclodextrin as a synergistic catalyst for hydroxyl radical generation and molecular recognitive destruction of aromatic pollutants at neutral pH. JOURNAL OF HAZARDOUS MATERIALS 2018; 357:109-118. [PMID: 29870895 DOI: 10.1016/j.jhazmat.2018.05.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Wastewater systems contain a large number of compounds, such as anthropogenic aromatic pollutants and natural organic matter (NOM), and usually have pH higher than 4. Fenton-like reaction is the most widespread method for removal of organic pollutants, but their reactivity with H2O2 may be inhibited by NOM due to the competition of hydroxyl radicals and chelating agents. In this work, Cu2O@β-cyclodextrin was developed to achieve the collaboration between molecular recognition and Fenton-like catalysis to destruct aromatic pollutants at neutral pH. In Cu2O@β-CD, covalent CuOC bond was topotaxially converted from CuCl assisted by β-CD at room temperature. Covalently linked β-CD could keep humic acid from interfering catalytic performance of Cu2O surfaces and inhibit the leaching of copper. A higher catalytic ability was observed for Cu2O@β-CD with rate constant 0.0331 min-1 than Cu2O (0.0064 min-1) at neutral pH. A mechanism of synergistic catalysis was proposed on the basis of Cu+, β-CD and phenoxo-Cu2+ complexes in the Cu2O@β-CD/BPA/H2O2 system. The strategy of coupling molecular recognition into Fenton-like reaction provides an efficient and promising approach to the destruction of aromatic pollutants at neutral pH.
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Affiliation(s)
- Lingshuai Kong
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, China
| | - Guodong Fang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Ya Kong
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, China
| | - Meng Xie
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, China
| | - Vinothkumar Natarajan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, China
| | - Dongmei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Jinhua Zhan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan 250100, China.
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Feng Y, Li H, Ling L, Yan S, Pan D, Ge H, Li H, Bian Z. Enhanced Photocatalytic Degradation Performance by Fluid-Induced Piezoelectric Field. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7842-7848. [PMID: 29925233 DOI: 10.1021/acs.est.8b00946] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The introduction of a piezoelectric field has been proven a promising method to enhance photocatalytic activity by preventing photoelectron-hole recombination. However, the formation of a piezoelectric field requires additional mechanical force or high-frequency ultrasonic baths, which limits its potential application on industrial scale. Therefore, it is of great practical significance to design the catalyst that can harvest the discrete energy such as the fluid mechanical energy to form the electric field. Herein, PZT/TiO2 catalyst with a core-shell configuration was prepared by a simple coating method. By collecting the mechanical energy of water, an internal piezoelectric field was induced. Under 800 rpm stirring, transient photocurrent measured on PZT/TiO2 electrode is about 1.7 times higher than that of 400 rpm. Correspondingly, the photocatalytic degradation rate and mineralization efficiency of RhB, BPA, phenol, p-chlorophenol much improved, showing the promoting effect of piezoelectric field generated directly from harvesting the discrete fluid mechanical energy.
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Affiliation(s)
- Yawei Feng
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Hao Li
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Lili Ling
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Sa Yan
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Donglai Pan
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Hao Ge
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Hexing Li
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
| | - Zhenfeng Bian
- Education Ministry Key and International Joint Lab of Resource Chemistry and Shanghai Key Lab of Rare Earth Functional Materials , Shanghai Normal University , Shanghai 200234 , People's Republic of China
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12
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Wang J, Shao X, Zhang Q, Ma J, Ge H. Preparation and photocatalytic application of magnetic Fe2O3/SBA-15 nanomaterials. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.109] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Abstract
Synergistic utilization of TiO2-photo-generated holes and electrons is a potential protocol for catalytic C–C bond formation reactions.
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Affiliation(s)
- Dongge Ma
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Anan Liu
- Key Laboratory of Photochemistry
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry, Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Shuhong Li
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Chichong Lu
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry, Chinese Academy of Sciences
- Beijing
- P. R. China
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14
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Yu T, Liu L, Yang F. Heterojunction between anodic TiO 2 /g-C 3 N 4 and cathodic WO 3 /W nano-catalysts for coupled pollutant removal in a self-biased system. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(16)62556-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Wu C, De Visscher A, Gates ID. Reactions of hydroxyl radicals with benzoic acid and benzoate. RSC Adv 2017. [DOI: 10.1039/c7ra05488b] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Density functional theory was used to study the mechanism and kinetics of benzoic acid with hydroxyl radicals in both gas and aqueous phases as well as benzoate with hydroxyl radicals in the aqueous phase at the M06-2X/6-311+G(d,p) level of theory.
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Affiliation(s)
- Chongchong Wu
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Canada
| | - Alex De Visscher
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Canada
- Department of Chemical and Materials Engineering
- Concordia University
| | - Ian Donald Gates
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Canada
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16
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Gong Y, Yang C, Ji H, Chen C, Ma W, Zhao J. Mechanistic Studies of TiO2Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water. Chem Asian J 2016; 11:3568-3574. [DOI: 10.1002/asia.201601299] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Indexed: 01/03/2023]
Affiliation(s)
- Yuanzheng Gong
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Chun Yang
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Hongwei Ji
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Wanhong Ma
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Jincai Zhao
- Key Laboratory of Photochemistry; National Laboratory for Molecular Sciences; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
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17
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Singh P, Ojha A, Borthakur A, Singh R, Lahiry D, Tiwary D, Mishra PK. Emerging trends in photodegradation of petrochemical wastes: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:22340-22364. [PMID: 27566154 DOI: 10.1007/s11356-016-7373-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
Various human activities like mining and extraction of mineral oils have been used for the modernization of society and well-beings. However, the by-products such as petrochemical wastes generated from such industries are carcinogenic and toxic, which had increased environmental pollution and risks to human health several folds. Various methods such as physical, chemical and biological methods have been used to degrade these pollutants from wastewater. Advance oxidation processes (AOPs) are evolving techniques for efficient sequestration of chemically stable and less biodegradable organic pollutants. In the present review, photocatalytic degradation of petrochemical wastes containing monoaromatic and poly-aromatic hydrocarbons has been studied using various heterogeneous photocatalysts (such as TiO2, ZnO and CdS. The present article seeks to offer a scientific and technical overview of the current trend in the use of the photocatalyst for remediation and degradation of petrochemical waste depending upon the recent advances in photodegradation of petrochemical research using bibliometric analysis. We further outlined the effect of various heterogeneous catalysts and their ecotoxicity, various degradation pathways of petrochemical wastes, the key regulatory parameters and the reactors used. A critical analysis of the available literature revealed that TiO2 is widely reported in the degradation processes along with other semiconductors/nanomaterials in visible and UV light irradiation. Further, various degradation studies have been carried out at laboratory scale in the presence of UV light. However, further elaborative research is needed for successful application of the laboratory scale techniques to pilot-scale operation and to develop environmental friendly catalysts which support the sustainable treatment technology with the "zero concept" of industrial wastewater. Nevertheless, there is a need to develop more effective methods which consume less energy and are more efficient in pilot scale for the demineralization of pollutant.
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Affiliation(s)
- Pardeep Singh
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India.
- Department of Environmental Studies, PGDAV College, University of Delhi, New Delhi, 110068, India.
| | - Ankita Ojha
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
| | - Anwesha Borthakur
- Centre for Studies in Science Policy, Jawaharlal Nehru University (JNU), New Delhi, 110067, India
| | - Rishikesh Singh
- Institute of Environment and Sustainable Development (IESD), Banaras Hindu University, Varanasi, 221005, India
| | - D Lahiry
- Rajghat Education Centre, KFI, Varanasi, 221005, India
| | - Dhanesh Tiwary
- Department of Chemistry, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
| | - Pradeep Kumar Mishra
- Department of Chemical Engineering and Technology, Indian Institute of Technology (IIT-BHU), Varanasi, 221005, India
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18
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Fundamentals of TiO2 Photocatalysis. Consequences for Some Environmental Applications. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-662-48719-8_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
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Shi T, Chang W, Zhang H, Ji H, Ma W, Chen C, Zhao J. H2O-involved two-electron pathway for photooxidation of aldehydes on TiO2: an isotope labeling study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:3024-3031. [PMID: 25648875 DOI: 10.1021/es5049539] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Aldehyde pollution has been receiving increasing environmental concern recently. In this study, the photooxidation of aldehydes to carboxylates on the TiO2 surface was studied by an oxygen-isotope-labeling method. The solvent H2O was found to contribute much to the oxygen source of the formed carboxylate, which cannot be explained if the conventional O2-involved free radical chain reaction is the only mechanism for the photocatalytic oxidation of aldehydes. We also observed that, unlike in the TiO2 photocatalytic system, the aldehyde oxidation in homogeneous solutions initiated by single electron oxidant (•)OH and SO4(•-) radicals inserted a small O atom of H2O into the product acids. The detailed experiments, combined with DFT calculation, revealed the existence of a new pathway for the oxidation of aldehyde on TiO2, in which, analogous to oxidation of aldehyde by dehydrogenase, the aldehyde undergoes a hydration first and subsequently is oxidized through a two-electron transfer process. The present study highlights the multielectron characteristic of TiO2 photocatalytic oxidation and can have implications for the oxidation of aldehyde in the environment.
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Affiliation(s)
- Tao Shi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry Institution Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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Unraveling the photocatalytic mechanisms on TiO2 surfaces using the oxygen-18 isotopic label technique. Molecules 2014; 19:16291-311. [PMID: 25310153 PMCID: PMC6271656 DOI: 10.3390/molecules191016291] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/24/2014] [Accepted: 10/06/2014] [Indexed: 11/22/2022] Open
Abstract
During the last several decades TiO2 photocatalytic oxidation using the molecular oxygen in air has emerged as a promising method for the degradation of recalcitrant organic pollutants and selective transformations of valuable organic chemicals. Despite extensive studies, the mechanisms of these photocatalytic reactions are still poorly understood due to their complexity. In this review, we will highlight how the oxygen-18 isotope labeling technique can be a powerful tool to elucidate complicated photocatalytic mechanisms taking place on the TiO2 surface. To this end, the application of the oxygen-18 isotopic-labeling method to three representative photocatalytic reactions is discussed: (1) the photocatalytic hydroxylation of aromatics; (2) oxidative cleavage of aryl rings on the TiO2 surface; and (3) photocatalytic decarboxylation of saturated carboxylic acids. The results show that the oxygen atoms of molecular oxygen can incorporate into the corresponding products in aqueous solution in all three of these reactions, but the detailed incorporation pathways are completely different in each case. For the hydroxylation process, the O atom in O2 is shown to be incorporated through activation of O2 by conduction band electrons. In the cleavage of aryl rings, O atoms are inserted into the aryl ring through the site-dependent coordination of reactants on the TiO2 surface. A new pathway for the decarboxylation of saturated carboxylic acids with pyruvic acid as an intermediate is identified, and the O2 is incorporated into the products through the further oxidation of pyruvic acid by active species from the activation of O2 by conduction band electrons.
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Abeish AM, Ang M, Znad H. Enhanced Solar-Photocatalytic Degradation of Combined Chlorophenols Using Ferric Ions and Hydrogen Peroxide. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501160h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abdulbasit M. Abeish
- Department of Chemical Engineering, Curtin University, GPO
Box U1987, Perth, Western Australia 6845, Australia
| | - Ming Ang
- Department of Chemical Engineering, Curtin University, GPO
Box U1987, Perth, Western Australia 6845, Australia
| | - Hussein Znad
- Department of Chemical Engineering, Curtin University, GPO
Box U1987, Perth, Western Australia 6845, Australia
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Montoya JF, Bahnemann DW, Peral J, Salvador P. Catalytic role of TiO(2) terminal oxygen atoms in liquid-phase photocatalytic reactions: oxidation of aromatic compounds in anhydrous acetonitrile. Chemphyschem 2014; 15:2311-20. [PMID: 24827557 DOI: 10.1002/cphc.201402043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/28/2014] [Indexed: 11/11/2022]
Abstract
On the basis of experiments carried out with controlled amounts of residual oxygen and water, or by using oxygen-isotope-labeled Ti(18) O2 as the photocatalyst, we demonstrate that (18) Os atoms behave as real catalytic species in the photo-oxidation of acetonitrile-dissolved aromatic compounds such as benzene, phenol, and benzaldehyde with TiO2 . The experimental evidence allows a terminal-oxygen indirect electron-transfer (TOIET) mechanism to be proposed, which is a new pathway that involves the trapping of free photogenerated valence-band holes at Os species and their incorporation into the reaction products, with simultaneous generation of oxygen vacancies at the TiO2 surface and their subsequent healing with oxygen atoms from either O2 or H2 O molecules that are dissolved in the liquid phase. According to the TOIET mechanism, the TiO2 surface is not considered to remain stable, but is continuously changing in the course of the photocatalytic reaction, challenging earlier interpretations of TiO2 photocatalytic phenomena.
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Affiliation(s)
- Juan F Montoya
- Departamento de Química, Universidad Autónoma de Barcelona, 08193, Cerdanyola del Vallés (Spain)
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Dong G, Ai Z, Zhang L. Efficient anoxic pollutant removal with oxygen functionalized graphitic carbon nitride under visible light. RSC Adv 2014. [DOI: 10.1039/c3ra46068a] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Li D, Zhang Y, Zhang Y, Zhou X, Guo S. Fabrication of bidirectionally doped β-Bi2O3/TiO2-NTs with enhanced photocatalysis under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2013; 258-259:42-49. [PMID: 23692682 DOI: 10.1016/j.jhazmat.2013.02.058] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 02/26/2013] [Accepted: 02/27/2013] [Indexed: 06/02/2023]
Abstract
Stable β-Bi2O3/TiO2-NTs photocatalyst with excellent visible-light-activity is successfully prepared by bidirectional doping. Stake structure of the TiO2-NTs provides a larger specific surface area and makes the contact area between the TiO2-NTs and β-Bi2O3 much larger; The stake structure of TiO2-NTs not only leads to a firmer combination of TiO2-NTs and β-Bi2O3, but also makes them dope one another deeply. The modification of Bi species into TiO2-NTs can form Bi-O-Ti chemical absorption bonds, then a localized impurity level is generated within the band gap. Electrons can be excited and transferred from the Bi(3+) impurity level to the conduction band (CB) of TiO2, similar to narrowing the band-gap of TiO2-NTs, resulting in a red shift of the absorption edge and an enhancement in visible-light activity. During annealing, Bi atoms are partially replaced by Ti atoms. The lattice of β-Bi2O3 is compressed around the Ti impurity, making the lattice dislocate and distort. This dislocation and distortion leads to an increase in the β-Bi2O3 valance band (VB), from 2.02 to 2.28 eV. Accordingly, the weak oxidability of β-Bi2O3 is improved, and its photocatalytic ability is further enhanced. Moreover, this lattice dislocation and distortion changes the Bi-O distances, thus remarkably improving the stability of the β-Bi2O3/TiO2-NTs.
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Affiliation(s)
- Deyi Li
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, China
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26
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Montoya JF, Ivanova I, Dillert R, Bahnemann DW, Salvador P, Peral J. Catalytic Role of Surface Oxygens in TiO2 Photooxidation Reactions: Aqueous Benzene Photooxidation with Ti(18)O2 under Anaerobic Conditions. J Phys Chem Lett 2013; 4:1415-1422. [PMID: 26282293 DOI: 10.1021/jz400580b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Juan Felipe Montoya
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
| | - Irina Ivanova
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Ralf Dillert
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Detlef W Bahnemann
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Pedro Salvador
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
| | - José Peral
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
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27
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