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Yazdanpanah M, Fereidooni M, Márquez V, Paz CV, Saelee T, Salazar Villanueva M, Rittiruam M, Khajondetchairit P, Praserthdam S, Praserthdam P. The Underlying Catalytic Role of Oxygen Vacancies in Fatty Acid Methyl Esters Ketonization over TiO x Catalysts. CHEMSUSCHEM 2024; 17:e202301033. [PMID: 37724580 DOI: 10.1002/cssc.202301033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 09/21/2023]
Abstract
Recently, interest in converting bio-derived fatty acid methyl esters (FAMEs) into added-value products has significantly increased. The selectivity of ketonization reaction in the conversion of the FAMEs has significantly hampered the efficiency of this process. Herein, this work reports the preparation of catalysts with different levels of oxygen vacancies while the crystal phase remained unchanged. The catalyst with the highest level of oxygen vacancy exhibited the maximum selectivity. The density functional theory (DFT) simulation showed an increase in interatomic distances leading to the formation of frustrated Lewis pairs (FLPs) upon the creation of oxygen vacancies. The surface measurements, type and density of acid sites of the catalysts, showed that the Lewis acid sites enhanced the selectivity for ketone production; while Bronsted acid sites increased the formation of by-products. Moreover, the ketone formation rate was directly proportional to acid density. The findings of this research provide a different approach for catalyst design, based on defects engineering and their effect on the surface activity, which could be used for enhancing the catalytic performance of novel metal oxides.
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Affiliation(s)
- Mohammad Yazdanpanah
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Mohammad Fereidooni
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Victor Márquez
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - C V Paz
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Tinnakorn Saelee
- High-Performance Computing Unit (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Martin Salazar Villanueva
- Facultad de Ingeniería, Benemerita Universidad Autonoma de Puebla, Apartado Postal J-39, CP, 72570, Puebla, Mexico
| | - Meena Rittiruam
- High-Performance Computing Unit (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Patcharaporn Khajondetchairit
- High-Performance Computing Unit (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Supareak Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
- High-Performance Computing Unit (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
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Ouyang W, Shi B, Su T, Cheng X, Gao H, Jia F, Whangbo MH, Ren W. Magnetic transitions of hydrogenated H xCrO 2( x= 0-2) monolayer from a ferromagnetic half-metal to antiferromagnetic insulator. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:305001. [PMID: 37054736 DOI: 10.1088/1361-648x/acccc6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/13/2023] [Indexed: 06/19/2023]
Abstract
Two-dimensional (2D) transition metal oxide monolayers are currently attracting great interest in materials research due to their versatility and tunable electronic and magnetic properties. In this study, we report the prediction of magnetic phase changes in HxCrO2(0 ⩽x⩽ 2) monolayer on the basis of first-principles calculations. As the H adsorption concentrationxincreases from 0 to 0.75, HxCrO2monolayer transforms from a ferromagnetic (FM) half-metal to a small-gap FM insulator. Whenx= 1.00 and 1.25, it behaves as a bipolar antiferromagnetic (AFM) insulator, and eventually becomes an AFM insulator asxincreases further up to 2.00. The results suggest that the magnetic properties of CrO2monolayer can be effectively controlled by hydrogenation, and that HxCrO2monolayers have the potential for realizing tunable 2D magnetic materials. Our results provide a comprehensive understanding of the hydrogenated 2D transition metal CrO2and provide a research method that can be used as a reference for the hydrogenation of other similar 2D materials.
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Affiliation(s)
- Wenbin Ouyang
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
| | - Bowen Shi
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
- Shanghai World Foreign Language Academy, 400 Baihua Street, Shanghai 200233, People's Republic of China
| | - Tianhao Su
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
| | - Xuli Cheng
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
| | - Heng Gao
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
- Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (Anhui University of Technology), Ministry of Education, Maanshan 243002, People's Republic of China
- Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Fanhao Jia
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
| | - Myung-Hwan Whangbo
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, United States of America
| | - Wei Ren
- Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China
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Liu Z, Zhang W, Zhao X, Sheng X, Hu Z, Wang Q, Chen Z, Wang S, Zhang X, Wang X. Efficient Adsorption-Assisted Photocatalysis Degradation of Congo Red through Loading ZIF-8 on KI-Doped TiO 2. MATERIALS 2022; 15:ma15082857. [PMID: 35454553 PMCID: PMC9027197 DOI: 10.3390/ma15082857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 02/01/2023]
Abstract
Zeolitic imidazolate framework-8 (ZIF-8) was evenly loaded on the surface of TiO2 doped with KI, using a solvent synthesis method, in order to produce a ZIF-8@TiO2 (KI) adsorption photocatalyst with good adsorption and photocatalytic properties. The samples were characterized by XRD, SEM, EDX, XPS, BET and UV-Vis. The photocatalytic efficiency of the material was obtained by photocatalytic tests. The results indicate that the doping with I inhibited the grain growth and reduced the crystallite size of TiO2, reduced the band gap width and improved the utilization rate for light. TiO2 (KI) was a single crystal of anatase titanium dioxide. The combination of ZIF-8 and TiO2 (KI) improved the specific surface area and increased the reaction site. The ZIF-8@TiO2 (KI) for Congo red was investigated to validate its photocatalytic performance. The optimal concentration of Congo red solution was 30 mg/L, and the amount of catalyst was proportional to the degradation efficiency. The degradation efficiency of ZIF-8@TiO2 (5%KI) was 76.42%, after being recycled four times.
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Affiliation(s)
- Zhechen Liu
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China; (Z.L.); (W.Z.); (X.Z.)
| | - Wanqi Zhang
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China; (Z.L.); (W.Z.); (X.Z.)
| | - Xilong Zhao
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China; (Z.L.); (W.Z.); (X.Z.)
| | - Xianliang Sheng
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; (X.S.); (Z.H.); (Q.W.)
| | - Zichu Hu
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; (X.S.); (Z.H.); (Q.W.)
| | - Qiang Wang
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; (X.S.); (Z.H.); (Q.W.)
| | - Zhangjing Chen
- Department of Sustainable Biomaterials, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA;
| | - Sunguo Wang
- Sungro Bioresource & Bioenergy Technologies Corporation, Edmonton, AB T6R 3J6, Canada;
| | - Xiaotao Zhang
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; (X.S.); (Z.H.); (Q.W.)
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, China
- Correspondence: (X.Z.); (X.W.)
| | - Ximing Wang
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China; (Z.L.); (W.Z.); (X.Z.)
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, China
- Correspondence: (X.Z.); (X.W.)
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Zhou Y, Lee Y, Ren Y, Cui M, Khim J. Quantification of perfluorooctanoic acid decomposition mechanism applying negative voltage to anode during photoelectrochemical process. CHEMOSPHERE 2021; 284:131311. [PMID: 34182283 DOI: 10.1016/j.chemosphere.2021.131311] [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: 05/10/2021] [Revised: 06/18/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
Perfluorooctanoic acid (PFOA) is a carcinogen with a high binding energy between fluorine and carbon and is symmetrically linked, making it difficult to treat. In this study, a self-doped TiO2 nanotube array (TNTA) was used as the anode and platinum as the cathode to quantify the PFOA removal mechanism using a photoelectrochemical (PEC) system. The external voltage was negative compared to that of the anode. In addition, NO3- and t-BuOH were used as scavengers to quantify the PFOA oxidation/reduction mechanism in the PEC system. As a result of the study, TNTA crystals are TiO2 anatase, and the band gap energy was 3.42. The synergy index of PEC was 1.25, and the best electrolyte was SO42-. The PFOA decomposition activation energy corresponds to 70.84 kJ mol-1. Moreover, ΔH# and ΔS# correspond to 68.34 kJ mol-1 and 0.190 kJ mol-1 K-1, respectively. When the external negative voltage was 1 V, the contributions of the oxidation/reduction reaction during PFOA decomposition were 60% and 40%, and when the external negative voltage was 5 V, the contributions of the redox reaction were 45% and 55%. As the external negative voltage increased, the contribution of the reduction reaction increased as the number of electrons applied to the anode increased. When PFOA was decomposed, the by-products were C7F13O2H, C6F11O2H, C5F9O2H, and C4F7O2H, respectively. This study is expected to be used as basic data for research on the effects of other factors on the oxidation/reduction as well as the selection of anode and cathode materials on the decomposition of pollutants other than PFOA when using a PEC system.
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Affiliation(s)
- Yongyue Zhou
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Yonghyeon Lee
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Yangmin Ren
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Mingcan Cui
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Jeehyeong Khim
- School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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Li X, Li N, Huang Z, Chen Z, Liang G, Yang Q, Li M, Zhao Y, Ma L, Dong B, Huang Q, Fan J, Zhi C. Enhanced Redox Kinetics and Duration of Aqueous I 2 /I - Conversion Chemistry by MXene Confinement. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006897. [PMID: 33470477 DOI: 10.1002/adma.202006897] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/28/2020] [Indexed: 05/14/2023]
Abstract
Weak binding and affinity between the conductive support and iodine species leads to inadequate electron transfer and the shuttle effect. Herein, redox kinetics and duration are significantly boosted by introducing a Nb2 CTX host that is classified as a layered 2D Nb-based MXene. With a facile electrodeposition strategy, initial I- ions are electrically driven to insert in the nanosized interlayers and are electro-oxidized in situ. Linear I2 is firmly confined inside and benefits from the rapid charge supply from the MXene. Consequently, an aqueous Zn battery based on a Zn metal anode and ZnSO4 electrolyte delivers an ultraflat plateau at 1.3 V, which contributes to 84.5% of the capacity and 89.1% of the energy density. Record rate capability (143 mAh g-1 at 18 A g-1 ) and lifespan (23 000) cycles are achieved, which are far superior to those of all reported aqueous MXenes and I2 -metal batteries. Moreover, the low voltage decay rate of 5.6 mV h-1 indicates its superior anti-self-discharge properties. Physicochemical analyses and density functional theory calculations elucidate that the localized electron transfer and trapping effect of the Nb2 CTX MXene host are responsible for enhanced kinetics and suppressed shuttle behavior. This work can be extended to the fabrication of other I2 -metal batteries with long-life-time expectations.
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Affiliation(s)
- Xinliang Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Na Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Zhaodong Huang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Ze Chen
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Guojin Liang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Qi Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Mian Li
- Qianwan Institute of CNiTECH, Zhongchuangyi Road, Hangzhou bay District, Ningbo, Zhejiang, 315336, China
| | - Yuwei Zhao
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Longtao Ma
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Binbin Dong
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan, 450002, China
| | - Qing Huang
- Qianwan Institute of CNiTECH, Zhongchuangyi Road, Hangzhou bay District, Ningbo, Zhejiang, 315336, China
| | - Jun Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Chunyi Zhi
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
- Center for Functional Photonics, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- Center for Advanced Nuclear Safety and Sustainable Development, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
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Long Z, Li Q, Wei T, Zhang G, Ren Z. Historical development and prospects of photocatalysts for pollutant removal in water. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122599. [PMID: 32302881 DOI: 10.1016/j.jhazmat.2020.122599] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 05/21/2023]
Abstract
Photocatalysis, as a low-cost and environment friendly technology, has demonstrated a significant potential for water pollution purification; it has received extensive attention in recent decades. The key is the photocatalyst; a large number of photocatalysts have been developed. To better understand and further develop the photocatalysis technology for water treatment, this review summarizes its development over time. The development period is divided into four stages (1960s-1993, 1994-2000, 2001-2010, and 2011-present) to provide readers with a better understanding of the development characteristics, and causes and consequences of each historical stage. This review expounds the origin and development of photocatalysis and the obstacles encountered and overcome. It describes the development of mechanisms and methods to solve these problems in each time period. Moreover, it reviews the recent development of new photocatalysts, the concept of designing photocatalysts, and photocatalytic-coupling systems. Finally, it enumerates the problems that continue to exist in the application of photocatalysis technology, and highlights the key issues that must be addressed in future research. The review is aimed at providing the researchers with a deeper understanding of photocatalysis technology and encourage further development of the application of photocatalysis to water treatment.
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Affiliation(s)
- Zeqing Long
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Qiangang Li
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Ting Wei
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Guangming Zhang
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Zhijun Ren
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China.
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Yang Y, Chen H, Zou X, Shi XL, Liu WD, Feng L, Suo G, Hou X, Ye X, Zhang L, Sun C, Li H, Wang C, Chen ZG. Flexible Carbon-Fiber/Semimetal Bi Nanosheet Arrays as Separable and Recyclable Plasmonic Photocatalysts and Photoelectrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24845-24854. [PMID: 32374583 DOI: 10.1021/acsami.0c05695] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, we prepared flexible carbon-fiber/semimetal Bi nanosheet arrays from solvothermal-synthesized carbon-fiber/Bi2O2CO3 nanosheet arrays via a reductive calcination process. The flexible carbon-fiber/semimetal Bi nanosheet arrays can function as photocatalysts and photoelectrocatalysts for 2,4-dinitorphenol oxidation. Compared with carbon-fiber/Bi2O2CO3 nanosheet arrays, the newly designed flexible carbon-fiber/semimetal Bi nanosheet arrays show enhanced ultraviolet-visible (UV-vis) light absorption efficiency and photocurrent, photocatalytic, and photoelectrocatalytic activities. Photocatalytic analyses indicate that the surface plasmon resonance (SPR) of semimetal Bi occurs under solar-simulated light irradiation during the photocatalytic process. The carbon-fiber traps the hot electrons exerted from the SPR of semimetal Bi and creates holes in the semimetal Bi nanosheets, which boosts the photocatalytic activity of the carbon fiber through plasmonic sensitization. Both photocatalytic experiments and density functional theory (DFT) calculations indicate that the electrons transferred to the carbon fiber and the holes created in semimetal Bi contribute to the formation of •O2- and •OH, respectively. The synergistic effect between electrocatalysis and photocatalysis under the solar-simulated light results in almost complete degradation of 2,4-dinitorphenol during the photoelectrocatalytic process. This work realizes a non-noble-metal plasmonic catalyst and provides a new avenue for the commercialization of photocatalysis and photoelectrocatalysis using the separable and recyclable carbon-fiber/semimetal Bi nanosheet arrays in the environment-related field.
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Affiliation(s)
- Yanling Yang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Huajun Chen
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
- Department of Environment and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, P. R. China
| | - Xinxin Zou
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Xiao-Lei Shi
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Ipswich, QLD 4300, Australia
| | - Wei-Di Liu
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Lei Feng
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Guoquan Suo
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Xiaojiang Hou
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Xiaohui Ye
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Li Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
| | - Chenghua Sun
- Department of Chemistry and Biotechnology, and Center for Translational Atomaterials, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Haisheng Li
- School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Changqing Wang
- Department of Mathematics and Physics, Luoyang Institute of Science and Technology, Luoyang 471023, P. R. China
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Ipswich, QLD 4300, Australia
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
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Saroj S, Singh L, Singh SV. Solution-combustion synthesis of anion (iodine) doped TiO2 nanoparticles for photocatalytic degradation of Direct Blue 199 dye and regeneration of used photocatalyst. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112532] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zhang C, Zhou Y, Bao J, Sheng X, Fang J, Zhao S, Zhang Y, Chen W. Hierarchical Honeycomb Br-, N-Codoped TiO 2 with Enhanced Visible-Light Photocatalytic H 2 Production. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18796-18804. [PMID: 29745646 DOI: 10.1021/acsami.8b04947] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The halogen elements modification strategy of TiO2 encounters a bottleneck in visible-light H2 production. Herein, we have for the first time reported a hierarchical honeycomb Br-, N-codoped anatase TiO2 catalyst (HM-Br,N/TiO2) with enhanced visible-light photocatalytic H2 production. During the synthesizing process, large amounts of meso-macroporous channels and TiO2 nanosheets were fabricated in massive TiO2 automatically, constructing the hierarchical honeycomb structure with large specific surface area (464 m2 g-1). cetyl trimethylammonium bromide and melamine played a key role in constructing the meso-macroporous channels. Additionally, HM-Br,N/TiO2 showed a high visible-light H2 production rate of 2247 μmol h-1 g-1, which is far more higher than single Br- or N-doped TiO2 (0 or 63 μmol h-1 g-1, respectively), thereby demonstrating the excellent synergistic effects of Br and N elements in H2 evolution. In HM-Br,N/TiO2 catalytic system, the codoped Br-N atoms could reduce the band gap of TiO2 to 2.88 eV and the holes on acceptor levels (N acceptor) can passivate the electrons on donor levels (Br donor), thereby preventing charge carriers recombination significantly. Furthermore, the proposed HM-Br,N/TiO2 fabrication strategy had a wide range of choices for N source (e.g., melamine, urea, and dicyandiamide) and it can be applied to other TiO2 materials (e.g., P25) as well, thereby implying its great potential application in visible-light H2 production. Finally, on the basis of experimental results, a possible photocatalytic H2 production mechanism for HM-Br,N/TiO2 was proposed.
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Affiliation(s)
- Chao Zhang
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Jiehua Bao
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Xiaoli Sheng
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Jiasheng Fang
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
| | - Wenxia Chen
- School of Chemistry and Chemical Engineering , Southeast University , Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189 , China
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10
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Sunlight-assisted photocatalytic degradation of textile effluent and Rhodamine B by using iodine doped TiO2 nanoparticles. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.09.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Zielińska-Jurek A, Klein M, Hupka J. Enhanced visible light photocatalytic activity of Pt/I-TiO2 in a slurry system and supported on glass packing. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Hwang J, Kalanur SS, Seo H. Identification of Visible Photocatalytic and Photoelectrochemical Properties of I-TiO2 via Electronic Band Structure. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Effect of modified iodine on defect structure and antibacterial properties of ZnO in visible light. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3053-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Hu Z, Shen Z, Yu JC. Converting Carbohydrates to Carbon-Based Photocatalysts for Environmental Treatment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:7076-7083. [PMID: 28510421 DOI: 10.1021/acs.est.7b00118] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carbohydrates in biomass can be converted to semiconductive hydrothermal carbonation carbon (HTCC), a material that contains plenty of sp2-hybridization structures. Under solar light illumination, HTCC generates photoexcited electrons, holes, and hydroxyl radicals. These species can be used for photocatalytic treatment such as water disinfection and degradation of organic pollutants. The photocatalytic activity of HTCC can be significantly enhanced by iodine doping. The enhancement mechanism is investigated by density functional theoretical calculations and electrochemical measurements. The iodine dopants twist and optimize the structures of the sp2-hybridization in HTCC, thereby favoring photon-induced excitation. Moreover, the iodine dopants facilitate the charge transfer between different sp2-hybridization structures, thus increasing the conductivity and activity of the HTCC. An added benefit is that the I-doped HTCC exhibits lower cytotoxic effect than the pure HTCC. In addition to monosaccharides (glucose), disaccharides (sucrose), and polysaccharides (starch), we have also transformed crops (e.g., rice), plants (e.g., grass), and even agricultural waste (e.g., straw) and animal waste (e.g., cow dung). The conversion of carbohydrates to HTCC may be considered as a "Trash to Treasure" approach. We believe this discovery will attract a lot of attention from researchers involved in environmental catalysis, waste recycling, and pollution treatment.
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Affiliation(s)
- Zhuofeng Hu
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong 999077, P. R. China
| | - Zhurui Shen
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong 999077, P. R. China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, P. R. China
| | - Jimmy C Yu
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong 999077, P. R. China
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15
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Deng W, Ning S, Lin Q, Zhang H, Zhou T, Lin H, Long J, Lin Q, Wang X. I-TiO2/PVC film with highly photocatalytic antibacterial activity under visible light. Colloids Surf B Biointerfaces 2016; 144:196-202. [DOI: 10.1016/j.colsurfb.2016.03.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/10/2016] [Accepted: 03/31/2016] [Indexed: 11/17/2022]
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16
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He Z, Yu Y, Wang D, Tang J, Chen J, Song S. Photocatalytic reduction of carbon dioxide using iodine-doped titanium dioxide with high exposed {001} facets under visible light. RSC Adv 2016. [DOI: 10.1039/c5ra26761g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Iodine-doped titanium dioxide nanosheets with high exposed {001} facets (IFTO) were synthesized by a two-step hydrothermal treatment followed by calcination at 350 °C.
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Affiliation(s)
- Zhiqiao He
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
| | - Yan Yu
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
| | - Da Wang
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
| | - Juntao Tang
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
| | - Jianmeng Chen
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
| | - Shuang Song
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- People's Republic of China
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17
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Huang H, Xiao K, Yu S, Dong F, Zhang T, Zhang Y. Iodide surface decoration: a facile and efficacious approach to modulating the band energy level of semiconductors for high-performance visible-light photocatalysis. Chem Commun (Camb) 2016; 52:354-7. [DOI: 10.1039/c5cc08239k] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iodide surface decoration enables the wide-band-gap Bi2O2CO3 to possess a continuously tunable band gap and profoundly boosted visible-light photocatalytic performance for dye degradation and NO removal.
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Affiliation(s)
- Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Ke Xiao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Shixin Yu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- College of Environmental and Biological Engineering
- Chongqing Technology and Business University
- Chongqing
- China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
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18
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Visible-light activation of TiO2 photocatalysts: Advances in theory and experiments. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2015.08.003] [Citation(s) in RCA: 749] [Impact Index Per Article: 83.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
This review gives a detailed summary and evaluation of the use of TiO2 doping to improve the performance of dye sensitized solar cells. Doping has a major effect on the band structure and trap states of TiO2, which in turn affect important properties such as the conduction band energy, charge transport, recombination and collection. The defect states of TiO2 are highly dependent on the synthesis method and thus the effect of doping may vary for different synthesis techniques, making it difficult to compare the suitability of different dopants. High-throughput methods may be employed to achieve a rough prediction on the suitability of dopants for a specific synthesis method. It was however found that nearly every employed dopant can be used to increase device performance, indicating that the improvement is not so much caused by the dopant itself, as by the defects it eliminates from TiO2. Furthermore, with the field shifting from dye sensitized solar cells to perovskite solar cells, the role doping can play to further advance this emerging field is also discussed.
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Affiliation(s)
- Bart Roose
- Adolphe Merkle Institute, Rue des Verdiers, CH-1700 Fribourg, Switzerland.
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20
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Martha S, Chandra Sahoo P, Parida KM. An overview on visible light responsive metal oxide based photocatalysts for hydrogen energy production. RSC Adv 2015. [DOI: 10.1039/c5ra11682a] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The present review summarizes the recent development and challenges in visible light responsive metal oxide based photocatalysts for water splitting.
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Affiliation(s)
- Satyabadi Martha
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
| | - Prakash Chandra Sahoo
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
| | - K. M. Parida
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
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21
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Asahi R, Morikawa T, Irie H, Ohwaki T. Nitrogen-Doped Titanium Dioxide as Visible-Light-Sensitive Photocatalyst: Designs, Developments, and Prospects. Chem Rev 2014; 114:9824-52. [DOI: 10.1021/cr5000738] [Citation(s) in RCA: 940] [Impact Index Per Article: 94.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ryoji Asahi
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
| | - Takeshi Morikawa
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
| | - Hiroshi Irie
- Clean
Energy Research Center, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan
| | - Takeshi Ohwaki
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
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22
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Marschall R, Wang L. Non-metal doping of transition metal oxides for visible-light photocatalysis. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.088] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Flasque M, Van Nhien AN, Swiatowska J, Seyeux A, Davoisne C, Sauvage F. Interface Stability of a TiO2/3-Methoxypropionitrile-Based Electrolyte: First Evidence for Solid Electrolyte Interphase Formation and Implications. Chemphyschem 2014; 15:1126-37. [DOI: 10.1002/cphc.201300904] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Indexed: 11/09/2022]
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24
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Li W, Liang R, Hu A, Huang Z, Zhou YN. Generation of oxygen vacancies in visible light activated one-dimensional iodine TiO2 photocatalysts. RSC Adv 2014. [DOI: 10.1039/c4ra04768k] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Oxygen vacancies induced by multi-valences of iodine in two-step hydrothermal synthesized I/TiO2 with enhanced visible photoactivity.
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Affiliation(s)
- Wenjuan Li
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083, P.R. China
- Department of Mechanical and Mechatronics
- University of Waterloo
| | - Robert Liang
- Department of Mechanical and Mechatronics
- University of Waterloo
- Waterloo N2L 3G1, Canada
- Waterloo Institute for Nanotechnology
- University of Waterloo
| | - Anming Hu
- Department of Mechanical and Mechatronics
- University of Waterloo
- Waterloo N2L 3G1, Canada
- Mechanical, Aerospace, & Biomedical Engineering Department
- University of Tennessee – Knoxville
| | - Zhaohui Huang
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083, P.R. China
| | - Y. Norman Zhou
- Department of Mechanical and Mechatronics
- University of Waterloo
- Waterloo N2L 3G1, Canada
- Waterloo Institute for Nanotechnology
- University of Waterloo
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25
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Dai L, Chen S, Liu J, Gao Y, Zhou J, Chen Z, Cao C, Luo H, Kanehira M. F-doped VO2 nanoparticles for thermochromic energy-saving foils with modified color and enhanced solar-heat shielding ability. Phys Chem Chem Phys 2013; 15:11723-9. [DOI: 10.1039/c3cp51359a] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Molea A, Popescu V, Rowson NA. Effects of I-doping content on the structural, optical and photocatalytic activity of TiO2 nanocrystalline powders. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.07.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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{001} facets dominated anatase TiO2: Morphology, formation/etching mechanisms and performance. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4766-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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28
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Li X, Wang DT, Chen JF, Tao X. (I2)n-encapsulated and C-encapsulated TiO2 films: Enhanced photoelectrochemical and visible-light photoelectrocatalytic properties. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.06.128] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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He Z, Hong T, Chen J, Song S. A magnetic TiO2 photocatalyst doped with iodine for organic pollutant degradation. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.05.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Song C, Chen P, Wang C, Zhu L. Photodegradation of perfluorooctanoic acid by synthesized TiO2-MWCNT composites under 365nm UV irradiation. CHEMOSPHERE 2012; 86:853-9. [PMID: 22172634 DOI: 10.1016/j.chemosphere.2011.11.034] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 11/15/2011] [Accepted: 11/15/2011] [Indexed: 05/04/2023]
Abstract
Degradation of perfluorooctanoic acid (PFOA) is of great importance due to its global distribution, persistence and toxicity to bioorganisms. In present study, a composite TiO(2) with multiple wall carbon nanotubes (MWCNTs) was synthesized using sol-gel method and it was used as photocatalyst to degrade PFOA in water. The prepared composite catalyst displayed significant absorption in UV to visible light region. The loading content of TiO(2) on MWCNTs could be adjusted by changing the ratio of precursor to MWCNTs. Due to the combined effect of the adsorption ability and e(-) transport capacity of MWCNT, the composites displayed much higher photocatalytic ability to PFOA as compared to pure TiO(2) under UV irradiation. The photocatalyst prepared with 10:1 of tetrabutyl titanate/MWCNT was the most effective. With the optimal dosage at 1.6 g L(-1), almost 100% of PFOA was degraded in acid medium after irradiation for 8h. It was proposed that PFOA were mainly degraded by stepwise losing a moiety of CF(2).
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Affiliation(s)
- Chao Song
- College of Environmental Science and Engineering, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Nankai University, Tianjin, PR China
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31
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Li X, Wang DT, Chen JF, Tao X. Enhanced Photosensitized Degradation of Organic Pollutants under Visible Radiation by (I2)n-Encapsulated TiO2 Films. Ind Eng Chem Res 2012. [DOI: 10.1021/ie202641w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xin Li
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dong-Ting Wang
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jian-Feng Chen
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering & Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xia Tao
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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32
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Kubacka A, Fernández-García M, Colón G. Advanced Nanoarchitectures for Solar Photocatalytic Applications. Chem Rev 2011; 112:1555-614. [DOI: 10.1021/cr100454n] [Citation(s) in RCA: 1901] [Impact Index Per Article: 146.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Anna Kubacka
- Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie 2, 28049-Madrid, Spain
| | | | - Gerardo Colón
- Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC-Universidad de Sevilla, C/Américo Vespucio, 49, 41092-Sevilla, Spain
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33
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Kumar SG, Devi LG. Review on Modified TiO2 Photocatalysis under UV/Visible Light: Selected Results and Related Mechanisms on Interfacial Charge Carrier Transfer Dynamics. J Phys Chem A 2011; 115:13211-41. [DOI: 10.1021/jp204364a] [Citation(s) in RCA: 1519] [Impact Index Per Article: 116.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- S. Girish Kumar
- Department of Post Graduate Studies in Chemistry, Bangalore University, Central College City Campus, Dr. Ambedkar Street, Bangalore-560001, Karnataka, India
| | - L. Gomathi Devi
- Department of Post Graduate Studies in Chemistry, Bangalore University, Central College City Campus, Dr. Ambedkar Street, Bangalore-560001, Karnataka, India
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34
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Hong X, Luo Z, Batteas JD. Enhanced visible-light absorption and dopant distribution of iodine-TiO2 nanoparticles synthesized by a new facile two-step hydrothermal method. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.06.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Sahu M, Biswas P. Single-step processing of copper-doped titania nanomaterials in a flame aerosol reactor. NANOSCALE RESEARCH LETTERS 2011; 6:441. [PMID: 21733174 PMCID: PMC3211860 DOI: 10.1186/1556-276x-6-441] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Accepted: 07/06/2011] [Indexed: 05/28/2023]
Abstract
Synthesis and characterization of long wavelength visible-light absorption Cu-doped TiO2 nanomaterials with well-controlled properties such as size, composition, morphology, and crystal phase have been demonstrated in a single-step flame aerosol reactor. This has been feasible by a detailed understanding of the formation and growth of nanoparticles in the high-temperature flame region. The important process parameters controlled were: molar feed ratios of precursors, temperature, and residence time in the high-temperature flame region. The ability to vary the crystal phase of the doped nanomaterials while keeping the primary particle size constant has been demonstrated. Results indicate that increasing the copper dopant concentration promotes an anatase to rutile phase transformation, decreased crystalline nature and primary particle size, and better suspension stability. Annealing the Cu-doped TiO2 nanoparticles increased the crystalline nature and changed the morphology from spherical to hexagonal structure. Measurements indicate a band gap narrowing by 0.8 eV (2.51 eV) was achieved at 15-wt.% copper dopant concentration compared to pristine TiO2 (3.31 eV) synthesized under the same flame conditions. The change in the crystal phase, size, and band gap is attributed to replacement of titanium atoms by copper atoms in the TiO2 crystal.
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Affiliation(s)
- Manoranjan Sahu
- Aerosol and Air Quality Research Laboratory, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Pratim Biswas
- Aerosol and Air Quality Research Laboratory, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
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36
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He Z, Wang C, Wang H, Hong F, Xu X, Chen J, Song S. Increasing the catalytic activities of iodine doped titanium dioxide by modifying with tin dioxide for the photodegradation of 2-chlorophenol under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2011; 189:595-602. [PMID: 21429666 DOI: 10.1016/j.jhazmat.2011.02.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 02/24/2011] [Accepted: 02/24/2011] [Indexed: 05/30/2023]
Abstract
The photocatalytic degradation of 2-chlorophenol (2-CP) irradiated with visible light over iodine doped TiO(2) (IT) modified with SnO(2) (SIT) nanoparticles has been investigated in this study. The structure and optical properties of the SIT catalysts have been well characterized by X-ray diffraction, the Brunauer-Emmett-Teller method, transmission electron microscopy, UV-visible absorption spectra and X-ray photoelectron spectroscopy. The effects of preparation conditions, such as SnO(2) content and calcination temperature, on the photocatalytic degradation efficiency have been surveyed in detail. The improved photocatalytic activity of SIT is derived from the synergistic effect between the SnO(2) and IT, which promoted the efficiency of migration of the photogenerated carriers at the interface of the catalysts and thereby enhanced the efficiency of photon harvesting in the visible region. The action of scavengers (fluoride ion, iodide ion, tert-butyl alcohol, and persulfate ion), as well as N(2) purging on the photodegradation rate reveal that the valence band hole is mainly responsible for the effective photocatalytic removal of 2-CP and the corresponding TOC reduction.
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Affiliation(s)
- Zhiqiao He
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
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37
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He Z, Zhan L, Hong F, Song S, Lin Z, Chen J, Jin M. A visible light-responsive iodine-doped titanium dioxide nanosphere. J Environ Sci (China) 2011; 23:166-170. [PMID: 21476357 DOI: 10.1016/s1001-0742(10)60389-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
I-doped titanium dioxide nanospheres (I-TNSs) were synthesized via a two-step hydrothermal synthesis route, their potential for the efficient utilization of visible light was evaluated. The prepared anatase-phase I-TNSs had a bimodal porous size distribution with a Brunauer-Emmett-Teller surface area of 76 m2/g, a crystallite size of approximately 14 nm calculated from X-ray diffraction data, and a remarkable absorption in the visible light region at wavelengths > 400 nm. The photocatalytic activity of the samples was evaluated by decoloration of Methyl Orange in aqueous solution under visible light irradiation in comparison to the iodine-doped TiO2 (I-TiO2). The I-TNSs showed higher photocatalytic efficiency compared with I-TiO2 after irradiation for 180 min even though the latter had a much greater surface area (115 m2/g). It was concluded that the surface area was not the predominant factor determining photocatalytic activity, and that the good crystallization and bimodal porous nanosphere structure were favourable for photocatalysis.
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Affiliation(s)
- Zhiqiao He
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
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Barka-Bouaifel F, Sieber B, Bezzi N, Benner J, Roussel P, Boussekey L, Szunerits S, Boukherroub R. Synthesis and photocatalytic activity of iodine-doped ZnO nanoflowers. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11351h] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Liu G, Sun C, Wang L, Smith SC, Lu GQ(M, Cheng HM. Bandgap narrowing of titanium oxide nanosheets: homogeneous doping of molecular iodine for improved photoreactivity. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11295c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Hou Q, Zheng Y, Chen JF, Zhou W, Deng J, Tao X. Visible-light-response iodine-doped titanium dioxide nanocrystals for dye-sensitized solar cells. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03327h] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Marschall R, Mukherji A, Tanksale A, Sun C, Smith SC, Wang L, Lu GQ(M. Preparation of new sulfur-doped and sulfur/nitrogen co-doped CsTaWO6 photocatalysts for hydrogen production from water under visible light. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02549f] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Photocatalytic mechanisms of modified titania under visible light. RESEARCH ON CHEMICAL INTERMEDIATES 2010. [DOI: 10.1007/s11164-010-0232-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen X, Shen S, Guo L, Mao SS. Semiconductor-based Photocatalytic Hydrogen Generation. Chem Rev 2010; 110:6503-70. [DOI: 10.1021/cr1001645] [Citation(s) in RCA: 6148] [Impact Index Per Article: 439.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaobo Chen
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, and State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Shaohua Shen
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, and State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Liejin Guo
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, and State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Samuel S. Mao
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, and State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
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Lisowska-Oleksiak A, Szybowska K, Jasulaitiené V. Preparation and characterisation of visible light responsive iodine doped TiO2 electrodes. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.05.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu G, Wang L, Yang HG, Cheng HM, (Max) Lu GQ. Titania-based photocatalysts—crystal growth, doping and heterostructuring. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b909930a] [Citation(s) in RCA: 964] [Impact Index Per Article: 68.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu G, Yan X, Chen Z, Wang X, Wang L, Lu GQ, Cheng HM. Synthesis of rutile–anatase core–shell structured TiO2 for photocatalysis. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b902666e] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Liu G, Yang HG, Sun C, Cheng L, Wang L, Lu GQ(M, Cheng HM. Titania polymorphs derived from crystalline titanium diboride. CrystEngComm 2009. [DOI: 10.1039/b909191m] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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