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Ali S, Ismail PM, Khan M, Dang A, Ali S, Zada A, Raziq F, Khan I, Khan MS, Ateeq M, Khan W, Bakhtiar SH, Ali H, Wu X, Shah MIA, Vinu A, Yi J, Xia P, Qiao L. Charge transfer in TiO 2-based photocatalysis: fundamental mechanisms to material strategies. NANOSCALE 2024; 16:4352-4377. [PMID: 38275275 DOI: 10.1039/d3nr04534j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Semiconductor-based photocatalysis has attracted significant interest due to its capacity to directly exploit solar energy and generate solar fuels, including water splitting, CO2 reduction, pollutant degradation, and bacterial inactivation. However, achieving the maximum efficiency in photocatalytic processes remains a challenge owing to the speedy recombination of electron-hole pairs and the limited use of light. Therefore, significant endeavours have been devoted to addressing these issues. Specifically, well-designed heterojunction photocatalysts have been demonstrated to exhibit enhanced photocatalytic activity through the physical distancing of electron-hole pairs generated during the photocatalytic process. In this review, we provide a systematic discussion ranging from fundamental mechanisms to material strategies, focusing on TiO2-based heterojunction photocatalysts. Current efforts are focused on developing heterojunction photocatalysts based on TiO2 for a variety of photocatalytic applications, and these projects are explained and assessed. Finally, we offer a concise summary of the main insights and challenges in the utilization of TiO2-based heterojunction photocatalysts for photocatalysis. We expect that this review will serve as a valuable resource to improve the efficiency of TiO2-based heterojunctions for energy generation and environmental remediation.
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Affiliation(s)
- Sharafat Ali
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Pir Muhammad Ismail
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Muhammad Khan
- Shannxi Engineering Laboratory for Graphene New Carbon Materials and Applications, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Alei Dang
- Shannxi Engineering Laboratory for Graphene New Carbon Materials and Applications, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Sajjad Ali
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China
- Energy, Water and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
| | - Amir Zada
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
| | - Fazal Raziq
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Imran Khan
- School of Physics and Electronics, Hunan Key Laboratory for Super-microstructure and Ultrafast Process, Central South University, Changsha, 410083, People's Republic of China
| | - Muhammad Shakeel Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
| | - Muhammad Ateeq
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
| | - Waliullah Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
| | - Syedul Hasnain Bakhtiar
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Haider Ali
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Xiaoqiang Wu
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Muhammad Ishaq Ali Shah
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Pengfei Xia
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Liang Qiao
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology, Huzhou 313001, China
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
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Li YL, Tian J, Shi DJ, Dong JX, Yue Z, Li G, Huang WP, Zhang SM, Zhu BL. CdSe/TiO 2NTs Heterojunction-Based Nonenzymatic Photoelectrochemical Sensor for Glucose Detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14935-14944. [PMID: 37842927 DOI: 10.1021/acs.langmuir.3c01685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Compared with a single semiconductor, the heterojunction formed by two different semiconductors usually has higher light utilization and better photoelectric performance. By using stable TiO2 nanotubes as the main subject, CdSe/TiO2NTs heterojunctions were synthesized by a hydrothermal method. XRD, TEM, SEM, PL, UV-vis, and EIS were used to characterize the fabricated CdSe/TiO2NTs. Under visible light irradiation, CdSe/TiO2NTs heterojunctions exhibited a higher absorption intensity and lower degree of photogenerated carrier recombination than TiO2. The electrons and holes were proven to be effectively separated in this heterojunction via theoretical calculation. Under CdSe/TiO2NTs' optimal conditions, the glucose concentrations (10-90 μM) had a linear relationship with the photocurrent value, and the detection limit was 3.1 μM. Moreover, the CdSe/TiO2NTs sensor exhibited good selectivity and stability. Based on the experimental data and theoretical calculations, its PEC sensing mechanism was also illuminated.
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Affiliation(s)
- Yue-Liu Li
- State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization, Pingdingshan 467000, China
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Jing Tian
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Dong-Jie Shi
- National Supercomputer Center in Tianjin, Tianjin 300457, China
| | - Jian-Xun Dong
- State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization, Pingdingshan 467000, China
- Henan Nylon New Material Industry Research Institute, Pingdingshan 467000, China
| | - Zhao Yue
- Department of Microelectronics, Nankai University, Tianjin 300350, China
| | - Geng Li
- National Supercomputer Center in Tianjin, Tianjin 300457, China
| | - Wei-Ping Huang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Min Zhang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Bao-Lin Zhu
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
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3
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Zeng J, Xu R, El-Kady AA, Oranj BT, Ahmed R, Valentin R, Hu X, Wu W, Wang D, Mao J, Wu H, Gu X, Li P, Xu W, Zhang Z. Nanomaterials enabled photoelectrocatalysis for removing pollutants in the environment and food. Trends Analyt Chem 2023; 166:117187. [DOI: 10.1016/j.trac.2023.117187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
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Nengzi L, Cao R, Qiu Y, Meng L, Hailai W, Li H, Qiu G. Steel slags for enhanced removal of landfill leachate in a three-dimensional electrochemical oxidation system. Sci Rep 2023; 13:12751. [PMID: 37550342 PMCID: PMC10406902 DOI: 10.1038/s41598-023-39638-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/28/2023] [Indexed: 08/09/2023] Open
Abstract
In this study, a three-dimensional electrochemical oxidation system, with steel slags as particle electrodes, was applied to deal with landfill leachate. The characteristics of particle electrodes were investigated by scanning electron microscope (SEM), X-ray fluorescence spectroscopy (XRF) and X-ray diffraction (XRD) measurements. It was found that the steel slag exhibited rough and irregular surface and mainly consisted of SiO2 (Quartz), which indicated the enhanced absorbed and electroconducted abilities. Subsequently, comparative degradation tests between two-dimensional (2D) and three-dimensional (3D) electrochemical oxidation systems were carried out and results indicated removal efficiencies of COD. Moreover, NH4+-N from landfill leachate in 3D system was greatly improved compared with that of 2D system. Besides, operating conditions were also optimized to interelectrode distance of 1 cm, current density of 20 mA·cm-2, initial pH value of 4.4 and steel slag concentration of 0.30 g·mL-1, all of which were determined to guarantee excellent landfill leachate removal efficiency. In addition, a possible removal mechanism for this system was proposed. The introduction of steel slag particle electrodes in three-dimensional electrochemical oxidation system implied the concept for "using waste to treat waste", providing a workable way in pollutant elimination.
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Affiliation(s)
- Lichao Nengzi
- Academy of Environmental and Economics Sciences, Xichang University, Xichang, 615013, China.
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
| | - Rui Cao
- College of Resources and Environment, Xichang University, Xichang, 615013, China
| | - Yong Qiu
- Academy of Environmental and Economics Sciences, Xichang University, Xichang, 615013, China
| | - Lin Meng
- Academy of Environmental and Economics Sciences, Xichang University, Xichang, 615013, China
| | - Wujia Hailai
- College of Resources and Environment, Xichang University, Xichang, 615013, China
| | - Haitao Li
- Academy of Environmental and Economics Sciences, Xichang University, Xichang, 615013, China.
| | - Guanglei Qiu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
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Orimolade BO, Idris AO, Feleni U, Mamba B. Enhanced visible light driven photoelectrochemical degradation of tetracycline hydrochloride using a BiOI photoanode modified with MnO 2 films. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:23678-23690. [PMID: 36323969 DOI: 10.1007/s11356-022-23866-0] [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: 07/08/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Removal of pharmaceuticals in wastewater has been the focus of many research due to the recalcitrant nature and hazardous effects of these compounds. The photoelectrochemical degradation process has proven to be suitable to harness solar energy for the mineralization of organic compounds in wastewater. Herein, we report the application of BiOI/MnO2 heterostructured anode for the photoelectrochemical degradation of tetracycline hydrochloride in aqueous solution. The photoanode was prepared through electrodeposition technique and fully characterized through microscopic, spectroscopic and electrochemical techniques. The results showed that formation of p-n heterojunction between BiOI and MnO2 in the photoanode led to improved charge separation which was evident in improved optical and photoelectrochemical properties. The FTO-BiOI/MnO2 electrode attained a photocurrent density of 0.104 mA cm-2 with applied potential of 1.0 V (vs Ag/AgCl) which was almost double that of pristine BiOI suggesting efficient charge separation. The heterostructured photoanode achieved 94% removal of tetracycline hydrochloride after 120 min through the PEC degradation process with 61% mineralization efficiency. The electrode showed good reusability and stability with 92% PEC removal after eight cycles. Hence, the FTO-BiOI/MnO2 has a great potential as anode for PEC wastewater treatments.
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Affiliation(s)
- Benjamin O Orimolade
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Private Bag X6, Johannesburg, 1709, South Africa.
| | - Azeez Olayiwola Idris
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Private Bag X6, Johannesburg, 1709, South Africa
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Private Bag X6, Johannesburg, 1709, South Africa
| | - Bhekie Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, Private Bag X6, Johannesburg, 1709, South Africa
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Huo GN, Zhang SS, Li YL, Li JX, Yue Z, Huang WP, Zhang SM, Zhu BL. CdS-Modified TiO 2 Nanotubes with Heterojunction Structure: A Photoelectrochemical Sensor for Glutathione. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:13. [PMID: 36615922 PMCID: PMC9824176 DOI: 10.3390/nano13010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/20/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
The formation of heterojunction structures can effectively prevent the recombination of photogenerated electron-hole pairs in semiconductors and result in the enhancement of photoelectric properties. Using TiO2 nanotubes (prepared using the hydrothermal-impregnation method) as carriers, CdS-TiO2NTs were fabricated as a photoelectrochemical (PEC) sensor, which can be used under visible light and can exhibit good PEC performance due to the existence of the heterojunction structure. The experimental results show that the prepared CdS-TiO2NTs electrode had a linear response to 2-16 mM glutathione (GSH). The sensor's sensitivity and detection limit (LOD) were 102.9 µA·mM-1 cm-2 and 27.7 µM, respectively. Moreover, the biosensor had good stability, indicating the potential application of this kind of heterojunction PEC biosensor.
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Affiliation(s)
- Guo-Na Huo
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
- Chemistry and Chemical Engineering College, Xingtai University, Xingtai 054000, China
| | - Sha-Sha Zhang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Yue-Liu Li
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Jia-Xing Li
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Zhao Yue
- Department of Microelectronics, Nankai University, Tianjin 300350, China
| | - Wei-Ping Huang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Min Zhang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
| | - Bao-Lin Zhu
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China
- National Demonstration Center for Experimental Chemistry Education (Nankai University), Tianjin 300071, China
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Yusuf TL, Orimolade BO, Masekela D, Mamba B, Mabuba N. The application of photoelectrocatalysis in the degradation of rhodamine B in aqueous solutions: a review. RSC Adv 2022; 12:26176-26191. [PMID: 36275103 PMCID: PMC9490539 DOI: 10.1039/d2ra04236c] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/07/2022] [Indexed: 12/14/2022] Open
Abstract
The pollution of the water environment by industrial effluents is an ongoing challenge due to the rate of industrialisation and globalisation. Photoelectrocatalysis (PEC), an electrochemical advanced oxidation process, has proven to be an effective method for removing organics from wastewater. Photoelectrocatalysis is environmentally benign, cost-effective and easy to operate. In this present review, we examine the recent progress in the removal of rhodamine B dye, a common constituent of textile effluent released into the environment, through photoelectrocatalytic degradation. We present a detailed discussion on the use of different kinds of unmodified and modified photoanodes that have been explored for the photoelectrocatalytic removal of this dye. More importantly, discussions are presented on the mechanisms and kinetics of the degradation of rhodamine B dye using these photoanodes. Hence, this review will be beneficial for researchers in developing future projects in the area of wastewater treatments through photoelectrocatalysis.
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Affiliation(s)
- Tunde Lewis Yusuf
- Department of Chemical Sciences, University of Johannesburg Doornfontein, P.O. BOX 17011 2028 Johannesburg South Africa
| | - Benjamin O Orimolade
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa Private Bag X6, Florida Science Campus 1709 Johannesburg South Africa
| | - Daniel Masekela
- Department of Chemical Sciences, University of Johannesburg Doornfontein, P.O. BOX 17011 2028 Johannesburg South Africa
| | - Bhekie Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa Private Bag X6, Florida Science Campus 1709 Johannesburg South Africa
| | - Nonhlangabezo Mabuba
- Department of Chemical Sciences, University of Johannesburg Doornfontein, P.O. BOX 17011 2028 Johannesburg South Africa
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Qiu S, Wang W, Yu J, Tian X, Li X, Deng Z, Lin F, Zhang Y. Enhanced photocatalytic degradation efficiency of formaldehyde by in-situ fabricated TiO2/C/CaCO3 heterojunction photocatalyst from mussel shell extract. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yang M, Wu Z, Wang X, Yin Z, Tan X, Zhao J. Facile preparation of MnO 2-TiO 2 nanotube arrays composite electrode for electrochemical detection of hydrogen peroxide. Talanta 2022; 244:123407. [PMID: 35366513 DOI: 10.1016/j.talanta.2022.123407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/16/2021] [Accepted: 03/23/2022] [Indexed: 01/10/2023]
Abstract
The MnO2-TNTA composite electrodes were obtained through depositing MnO2 into TiO2 nanotube arrays (TNTA) by successive ionic layer adsorption reaction (SILAR) and subsequent hydrothermal method. The MnO2-TNTA nanocomposites were used as electrochemical sensors for the detection of hydrogen peroxide (H2O2). The preparation conditions of MnO2-TNTA electrodes and test conditions affect the electrochemical detection performance significantly. The optimal conditions are listed as follows: the number of SILAR cycles, 6 times; KMnO4 solution temperature, 50 °C; supporting electrolyte, 0.5 M NaOH. Under these conditions, the MnO2-TNTA electrode exhibits the best performance for detecting H2O2. The optimized MnO2-TNTA electrode has a minimum detection limit of 0.6 μM (S/N = 3) and a linear range of 5 μM ∼ 13 mM, which is much superior to the previously-reported electrodes. Moreover, the optimized MnO2-TNTA electrode possesses high selectivity, excellent stability and good reproducibility in the detection of H2O2. When used in the determination of H2O2 content in actual samples including disinfectant and milk, it also shows good accuracy, ideal recovery (96.00% ∼ 102.67%) and high precision (RSD < 4.0%).
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Affiliation(s)
- Mengyao Yang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China
| | - Zhigang Wu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China
| | - Xixin Wang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Zekun Yin
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China
| | - Xu Tan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China
| | - Jianling Zhao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China.
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Mazierski P, Wilczewska P, Lisowski W, Klimczuk T, Białk-Bielińska A, Zaleska-Medyska A, Siedlecka EM, Pieczyńska A. Ti/TiO 2 nanotubes sensitized PbS quantum dots as photoelectrodes applied for decomposition of anticancer drugs under simulated solar energy. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126751. [PMID: 34343880 DOI: 10.1016/j.jhazmat.2021.126751] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/12/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
One of the challenges in research into photoelectrocatalytic (PEC) degradation of pollutants is finding the appropriate photoanode material, which has a significant impact on the process efficiency. Among all others, photoelectrodes based on an ordered TiO2 nanotube arrays are a promising material due to well-developed surface area and efficient charge separation. To increase the PEC activity of this material, the SILAR method was used to decorate Ti/TiO2 nanotubes by PbS quantum dots (QD). The ifosfamide (IF) degradation rate constants was twice as higher for PbS-Ti/TiO2 (0.0148 min-1) than for Ti/TiO2 (0.0072 min-1). Our research showed the highest efficiency of PEC degradation of drugs using IIIPbS-Ti/TiO2 made with 3 SILAR cycles (PbS QD size mainly 2-4 nm). The 4 and 6 of SILAR cycles resulted in the aggregation of PbS nanoparticles on the Ti/TiO2 surface and decreased IF PEC degradation rate to 0.0043 and 0.0033 min-1, respectively. Research on PEC mechanism has shown that the drugs are degraded mainly by the activity of photogenerated holes and hydroxyl radicals. In addition, the identified drug intermediates made possible to propose a degradation pathways of anticancer drugs and the ecotoxicity test show no inhibition of Lemna minor growth of treated solutions.
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Affiliation(s)
- Paweł Mazierski
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
| | - Patrycja Wilczewska
- Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
| | - Wojciech Lisowski
- Institute of Physical Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-244 Warsaw, Poland
| | - Tomasz Klimczuk
- Department of Solid State Physics, Gdansk University of Technology, 80-233 Gdansk, Poland
| | - Anna Białk-Bielińska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
| | - Adriana Zaleska-Medyska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
| | - Ewa M Siedlecka
- Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland
| | - Aleksandra Pieczyńska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308 Gdansk, Poland.
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Visible-light-driven photoelectrocatalytic degradation of p-chloronitrobenzene by BiOBr/TiO2 nanotube arrays photoelectrodes: Mechanisms, degradation pathway and DFT calculation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118699] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Zhang X, Zhang X, Feng K, Hu X, Fan J, Liu E. A carbon membrane-mediated CdSe and TiO 2 nanofiber film for enhanced photoelectrochemical degradation of methylene blue. RSC Adv 2021; 11:11872-11881. [PMID: 35423737 PMCID: PMC8696456 DOI: 10.1039/d1ra01240a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 03/10/2021] [Indexed: 11/17/2022] Open
Abstract
In this study, a carbon membrane-mediated CdSe and TiO2 ternary film (CdSe/C/TiO2) was prepared to degrade methylene blue (MB). Carbon membrane and CdSe were introduced to the surface of a TiO2 nanofiber film via an in situ hydrothermal deposition process successively. The investigation shows that the carbon membrane not only provides a charge transfer channel to promote the transfer of electron from the conduction band of CdSe to that of TiO2, but also improves the poor conduct between the TiO2 film and electrolyte. The synergies between the carbon membrane and CdSe can make the ternary system harvest more visible light energy and facilitate the charge transfer property of TiO2. The current density of CdSe/C/TiO2 was about 9 folds higher compared with that of pure TiO2 under UV and visible light irradiations. This ternary hybrid exhibits a superior activity during the photoelectrochemical (PEC) degradation of MB, and 92.43% can be removed after 120 min irradiation, which is improved by 21.14% than that of TiO2. A CdSe/C/TiO2 nanofiber film was prepared for enhanced photoelectrochemical degradation ability, and carbon membrane as a carrier-transfer-channel could promote electron transfer.![]()
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Affiliation(s)
- Xinye Zhang
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University Xi'an 710069 P. R. China
| | - Xueyue Zhang
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University Xi'an 710069 P. R. China
| | - Keting Feng
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University Xi'an 710069 P. R. China
| | - Xiaoyun Hu
- School of Physics, Northwest University Xi'an 710069 P. R. China
| | - Jun Fan
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University Xi'an 710069 P. R. China
| | - Enzhou Liu
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University Xi'an 710069 P. R. China
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Ma B, Yu N, Xin S, Xin Y, Zhang C, Ma X, Gao M. Photoelectrocatalytic degradation of p-chloronitrobenzene by g-C 3N 4/TiO 2 nanotube arrays photoelectrodes under visible light irradiation. CHEMOSPHERE 2021; 267:129242. [PMID: 33321279 DOI: 10.1016/j.chemosphere.2020.129242] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/25/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
As a typical refractory pollutant, p-chloronitrobenzene (p-CNB) from industrial wastewater poses a serious threat to the aquatic environment safety and human health. The photoelectrocatalytic (PEC) technology is regarded as a promising and cleaner approach for p-CNB removal. Therefore, the graphitic carbon nitride (g-C3N4) modified TiO2 nanotube arrays (g-C3N4/TNAs) were prepared as the photoelectrodes for p-CNB degradation. The PEC degradation efficiency for p-CNB by g-C3N4/TNAs (0.00484 min-1) was much higher than that by bare TNAs (0.00135 min-1) under visible light. The g-C3N4/TNAs photoelectrodes exhibited excellent visible-light response, efficient charges separation and high redox potentials of electron/hole, which was favorable for p-CNB degradation. The radical scavenging experiments indicated that both reductive electrons and oxidized species (holes and ·OH) played crucial roles simultaneously during the dechlorination process, whereas the mineralization of p-CNB mainly depended on the photo-generated holes and ·OH. The degradation pathways of p-CNB were proposed through GC/MS spectra. The acute toxicity, bioaccumulation factor and mutagenicity of identified intermediates were reduced after PEC degradation by g-C3N4/TNAs photoelectrodes. The Z-scheme g-C3N4/TNAs provided an efficient approach for simultaneous dechlorination and mineralization of refractory pollutants.
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Affiliation(s)
- Bingrui Ma
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Naling Yu
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Shuaishuai Xin
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yanjun Xin
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Chunlei Zhang
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Xiaoming Ma
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Mengchun Gao
- Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
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Yang R, Fan Y, Ye R, Tang Y, Cao X, Yin Z, Zeng Z. MnO 2 -Based Materials for Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004862. [PMID: 33448089 DOI: 10.1002/adma.202004862] [Citation(s) in RCA: 127] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Manganese dioxide (MnO2 ) is a promising photo-thermo-electric-responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2 -based composites via the construction of homojunctions and MnO2 /semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2 -based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high-efficiency MnO2 -based materials for comprehensive environmental applications is provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Ruquan Ye
- Department of Chemistry, State Key Lab of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Yuxin Tang
- College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiehong Cao
- College of Materials Science and Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
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Wang G, Chen T, Liu S, Wang F, Li M, Xie M, Wang J, Xiang Y, Han W. Construction of TiO 2-MnO 2 0D-2D nanostructured heterojunction for enhanced photocatalytic hydrogen production. Dalton Trans 2021; 50:8711-8717. [PMID: 34060585 DOI: 10.1039/d1dt01233a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The low transfer efficiency and high recombination loss of photo-induced carriers in TiO2 are significant issues that hinder its photocatalytic activity. Herein, TiO2 nanoparticles (∼5 nm) were loaded on MnO2 nanosheets (40-60 nm) to form TiO2-MnO2 nanostructured heterojunction (0D-2D nanostructure unit), possessing a high specific surface area. The separation/transfer efficiency of photocarriers and the solar absorptivity of TiO2-MnO2 were improved, thus enhancing solar energy conversion efficiency. The enhanced transfer efficiency of carriers is associated with the 2D network of MnO2 and abundant oxygen vacancies serving as media for electron transport. The enhanced visible absorption and reduced recombination should be attributed to the narrowed bandgap and modified energy band structure. The photocurrent of TiO2-MnO2 increased obviously and the H2 production rate increased to 0.38 mmol g-1 h-1, compared with that of pure TiO2 (0.25 mmol g-1 h-1). The enhanced photocatalytic properties are also associated with the excellent water oxidation kinetics caused by MnO2 nanosheets.
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Affiliation(s)
- Guojing Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Tao Chen
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Shuo Liu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Fengqi Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Mingyang Li
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Mingzheng Xie
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jing Wang
- Department of Electronic Materials Science and Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yunjie Xiang
- School of Materials and Energy, Southwest University, Chongqing 404100, China
| | - Weihua Han
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
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Zhang X, Fan X, Wang X, Deng T, Liu E, Chen B. Facile fabrication of Co2P/TiO2 nanotube arrays photoelectrode for efficient methylene blue degradation. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124875] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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17
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Tang J, Li J, Xiong P, Sun Y, Zeng Z, Tian X, Tang D. Rolling circle amplification promoted magneto-controlled photoelectrochemical biosensor for organophosphorus pesticides based on dissolution of core-shell MnO 2 nanoflower@CdS mediated by butyrylcholinesterase. Mikrochim Acta 2020; 187:450. [PMID: 32676787 DOI: 10.1007/s00604-020-04434-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 07/07/2020] [Indexed: 12/11/2022]
Abstract
A photoelectrochemical (PEC) aptasensing platform is devised for sensitive detection of an organophosphorus pesticide based on dissolution of core-shell MnO2 nanoflower@CdS (MnO2 NF@CdS) by thiocholine (TCh). TCH is produced from the butyrylcholinesterase-acetylthiocholine system, accompanied by target-triggered rolling circle amplification (RCA). The core-shell MnO2 NF@CdS with excellent PEC performance was synthesized and employed as a photo-sensing platform. The target was detected on a functionalized magnetic probe with the corresponding aptamer. Upon malathion introduction, the aptamer was detached from the magnetic beads, while capture DNA (cDNA, with primer fragment) remained on the beads. The primer fragment in cDNA can trigger the RCA reaction to form a long single-stranded DNA (ssDNA). Furthermore, a large number of butyrylcholinesterase (BChE) were assembled on the long ssDNA strands through the hybridization with the S2-Au-BChE probe. Thereafter, TCh generated from hydrolysis of ATCh by BChE can reduce MnO2 NF (core) to Mn2+ and release the CdS nanoparticles (shell) from the platform electrode, significantly enhancing the PEC signal. Under optimal conditions, the proposed aptasensor exhibited high sensitivity for malathion with a low detection limit of 0.68 pg mL-1. Meanwhile, it also presents outstanding specificity, reproducibility, and stability. Importantly, the sensing platform provides a new concept for detection of pesticide. Graphical abstract Herein, this work devised a photoelectrochemical (PEC) aptasensing platform for sensitive detection of organophosphorus pesticide based on dissolution of core-shell MnO2 nanoflower@CdS (MnO2 NF@CdS) by the as-produced thiocholine (TCh) from the butyrylcholinesterase-acetylthiocholine system, accompanying with the target-triggered rolling circle amplification (RCA).
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Affiliation(s)
- Juan Tang
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and chemical engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China.
| | - Jingjing Li
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and chemical engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Pengyuan Xiong
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and chemical engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Yuanfang Sun
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and chemical engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Zhiyao Zeng
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and chemical engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Xiaochun Tian
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (Ministry of Education of China and Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou, 350108, People's Republic of China
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Mais L, Vacca A, Mascia M, Usai EM, Tronci S, Palmas S. Experimental study on the optimisation of azo-dyes removal by photo-electrochemical oxidation with TiO 2 nanotubes. CHEMOSPHERE 2020; 248:125938. [PMID: 31995733 DOI: 10.1016/j.chemosphere.2020.125938] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/08/2020] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
An experimental investigation is here presented on the photo-electrochemical removal of Methyl Orange (MO), selected as a model of the organic dyes, contained in wastewaters. The process is carried out in an electrochemical flow reactor, in which titania nanotubular electrode is irradiated with a simulated solar light. Design of Experiments (DOE) technique is used to plan the experimental campaign and investigate on the single and combined effects of applied current, electrolyte flow rate, and initial MO concentration, on the specific reaction rate. The results of the DOE analysis, also combined with the study of the distribution of the intermediate products, confirm a reaction mechanism mediated by OH radicals; high applied current and low reactant concentration resulted as favourable conditions to achieve high specific reaction rate of color removal.
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Affiliation(s)
- Laura Mais
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Annalisa Vacca
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Michele Mascia
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Elisabetta Maria Usai
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Stefania Tronci
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Simonetta Palmas
- Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, Via Marengo 2, 09123, Cagliari, Italy.
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19
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Design and construction of a highly efficient photoelectrocatalytic system based on dual-Pd/TNAs photoelectrodes for elimination of triclosan. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116232] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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20
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Tang C, Huang X, Wang H, Shi H, Zhao G. Mechanism investigation on the enhanced photocatalytic oxidation of nonylphenol on hydrophobic TiO 2 nanotubes. JOURNAL OF HAZARDOUS MATERIALS 2020; 382:121017. [PMID: 31446350 DOI: 10.1016/j.jhazmat.2019.121017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/02/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
Enhanced and selective photocatalytic oxidation of nonylphenol (NP), a typical hydrophobic endocrine disrupting chemicals (EDCs), was realized on hydrophobic titanium dioxide nanotubes (H-TiO2NTs), which was fabricated by an electrochemical anodization method, followed by grafting of perfluorooctyl groups. The water contact angle of catalyst surface changed from 21.1° to 128.4° after hydrophobic modification. H-TiO2NTs showed excellent photocatalytic oxidation performance for NP, that it was completely converted in 40 min under irradiation, which was improved for about 17% compared with the hydrophilic TiO2NTs. The enhanced photocatalytic performance of H-TiO2NTs was attributed to the stronger adsorption ability toward NP identified by ATR-FTIR, with an initial adsorption rate of 4 times as higher as that of bare TiO2NTs. Meanwhile, the hydrophobic surface of H-TiO2NTs was beneficial for generation of more hydroxyl radicals. The apparent rate constant of hydroxyl radicals' generation on H-TiO2NTs, which was the main oxidizing species, could reach 1.83 times that of the hydrophilic TiO2NTs. Both the two factors contributed to the successful competition of NP against the coexistent hydrophilic contaminates in the adsorption and oxidation on the catalyst surface, leading to the selective removal of NP in mixed systems finally.
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Affiliation(s)
- Chunjing Tang
- School of Chemical Science and Engineering, and Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Xuerong Huang
- School of Chemical Science and Engineering, and Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Haoying Wang
- School of Chemical Science and Engineering, and Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Huijie Shi
- School of Chemical Science and Engineering, and Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Guohua Zhao
- School of Chemical Science and Engineering, and Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
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21
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Efficient Photoelectrocatalytic Degradation of BTEX Using TiO2/CuO/Cu2O Nanorod-Array Film as the Photoanode and MWCNT/GO/Graphite Felt as the Photocathode. Electrocatalysis (N Y) 2020. [DOI: 10.1007/s12678-019-00576-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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22
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Zhang X, Gao Y, Nengzi LC, Li B, Gou J, Cheng X. Synthesis of SnS/TiO2 nano-tube arrays photoelectrode and its high photoelectrocatalytic performance for elimination of 2,4,6-trichlorophenol. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115742] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Zhang H, Gao Y, Zhu G, Li B, Gou J, Cheng X. Synthesis of PbS/TiO2 nano-tubes photoelectrode and its enhanced visible light driven photocatalytic performance and mechanism for purification of 4-chlorobenzoic acid. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115697] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhang L, Jin L, Yang Y, Kerns P, Su X, Meng M, Liu B, He J. Oxidative nucleation and growth of Janus-type MnO x-Ag and MnO x-AgI nanoparticles. NANOSCALE 2019; 11:15147-15155. [PMID: 31373342 DOI: 10.1039/c9nr03787j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Janus nanoparticles (NPs) containing two chemically distinct materials in one system are of great significance for catalysis in terms of harnessing catalytic synergies that do not exist in either component. We herein present a novel synthetic method of two Janus-type MnOx-Ag and MnOx-AgI NPs. The synthesis of Janus-type MnOx-AgI NPs is based on the oxidative nucleation and growth of Ag domains on MnO first and the subsequent iodization of Ag. A mild and non-disruptive iodization strategy is developed to yield Janus MnOx-AgI NPs, in which converting Ag to AgI domains with iodomethane (CH3I) is achieved through partial iodization. Simultaneously, Mn2+ species in the primary MnO octahedra are oxidized during the growth of Ag NPs, leading to the formation of amorphous p-type MnOx domains. Therefore, the as-resultant Janus-type MnOx-AgI NPs combining two semiconductors into an integrated nanostructure can be used as an efficient photocatalyst for visible-light-driven water oxidation. Janus MnOx-AgI NPs show an expected photocatalytic activity even in the absence of Ru(bpy)3Cl2 as an electron mediator. This intriguing synthesis may offer a new opportunity to develop asymmetric nanostructures of two semiconductors that will potentially be efficient photocatalysts for solar-driven water splitting.
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Affiliation(s)
- Lei Zhang
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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25
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Novel magnetic MnO2/MnFe2O4 nanocomposite as a heterogeneous catalyst for activation of peroxymonosulfate (PMS) toward oxidation of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.049] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Han Y, Qi M, Zhang L, Sang Y, Liu M, Zhao T, Niu J, Zhang S. Degradation of nitrobenzene by synchronistic oxidation and reduction in an internal circulation microelectrolysis reactor. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:448-456. [PMID: 30453238 DOI: 10.1016/j.jhazmat.2018.11.036] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 10/05/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
The degradation of nitrobenzene by synchronistic oxidation and reduction was investigated using an internal circulation microelectrolysis (ICE) reactor with an active volume of 0.018 m3. Compared with a conventional fixed bed reactor with and without aeration, the ICE reactor exhibited a markedly higher nitrobenzene degradation efficiency. The effects of various operational parameters such as reaction time, aeration rate, initial nitrobenzene concentration, initial pH, and a volume ratio of iron and carbon (Fe/C) were also investigated. The optimal operating conditions (reaction time = 60 min, aeration rate = 5 × 10-4 m3/s, initial concentration of nitrobenzene = 300 mg/L, pH = 3.0, Fe/C = 1:1) gave removal efficiencies of nitrobenzene and chemical oxygen demand of 98.2% and 58%, respectively. The biodegradability index of the treated nitrobenzene solution was 0.45, which is 22 times that of the original solution. The reaction intermediates were identified through high-performance liquid chromatography, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry, and ion chromatography. The primary intermediates were determined to be aniline, phenol, and carboxylic acids, indicating that nitrobenzene was synchronously oxidized and reduced in the ICE reactor. Based on the identified intermediates, a possible pathway for nitrobenzene degradation in the ICE reactor is proposed.
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Affiliation(s)
- Yanhe Han
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China.
| | - Mengmeng Qi
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China
| | - Lei Zhang
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China
| | - Yimin Sang
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China
| | - Meili Liu
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China
| | - Tingting Zhao
- Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, 19 Qingyuan North Road, Daxing District, Beijing 102617, PR China
| | - Junfeng Niu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, Guangdong 523808, PR China.
| | - Shanqing Zhang
- Griffith School of Environment, Gold Coast Campus, Griffith University, QLD 4222, Australia
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Ayoubi-Feiz B, Mashhadizadeh MH, Sheydaei M. Degradation of diazinon by new hybrid nanocomposites N-TiO2/Graphene/Au and N-TiO2/Graphene/Ag using visible light photo-electro catalysis and photo-electro catalytic ozonation: Optimization and comparative study by Taguchi method. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.032] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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28
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Li D, Sun T, Wang L, Wang N. Enhanced electro-catalytic generation of hydrogen peroxide and hydroxyl radical for degradation of phenol wastewater using MnO2/Nano-G|Foam-Ni/Pd composite cathode. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.075] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Ultralong α-MnO2 Nanowires Capable of Catalytically Degrading Methylene Blue at Low Temperature. Catal Letters 2018. [DOI: 10.1007/s10562-018-2454-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Yuan X, Xu Y, Meng H, Han Y, Wu J, Xu J, Zhang X. Fabrication of ternary polyaniline-graphene oxide-TiO2 hybrid films with enhanced activity for photoelectrocatalytic hydrogen production. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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