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Wu SM, Hwang I, Osuagwu B, Will J, Wu Z, Sarma BB, Pu FF, Wang LY, Badura Z, Zoppellaro G, Spiecker E, Schmuki P. Fluorine Aided Stabilization of Pt Single Atoms on TiO 2 Nanosheets and Strongly Enhanced Photocatalytic H 2 Evolution. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Si-Ming Wu
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany
| | - Imgon Hwang
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany
| | - Benedict Osuagwu
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany
| | - Johannes Will
- Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, IZNF, Cauerstraße 3, 91058 Erlangen, Germany
| | - Zhenni Wu
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany
| | - Bidyut Bikash Sarma
- Institute of Catalysis Research and Technology (IKFT) and Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Fu-Fei Pu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Li-Ying Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan, 430071, China
| | - Zdenek Badura
- Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc 78371, Czech Republic
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc 78371, Czech Republic
| | - Erdmann Spiecker
- Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, IZNF, Cauerstraße 3, 91058 Erlangen, Germany
| | - Patrik Schmuki
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany
- Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc 78371, Czech Republic
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21569, Saudi Arabia
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2
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Adsorption and Mechanism of Glycine on the Anatase with Exposed (001) and (101) Facets. MINERALS 2022. [DOI: 10.3390/min12070798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
As a widely existing mineral types on Earth, semiconductor minerals play an important role in the origin of life and the material geochemical cycle. The first step of peptide formation is amino acid adsorption on the mineral surface, but the role and mechanism of different crystal facets of semiconductor minerals are not well understood. Anatase (TiO2) with exposed (001) facets was synthesized by a hydrothermal method, and then analyzed and compared with the purchased ordinary anatase (TiO2) for the adsorption of glycine, the simplest amino acid. XRD, SEM and TEM results show that the hydrothermally synthesized anatase (TiO2) has a good anatase crystal form, which is micro-nano-scale flake particles and mainly composed of (001) facets. The results of HPLC used in the adsorption experiment showed that under optimal conditions (pH 5 to 6, an adsorption time of 24 h, and an initial concentration of 0.09 mol/L), the adsorption quantity of glycine on anatase (TiO2) with exposed (001) facets may reach 10 mg/m2, which is larger than that for ordinary anatase (TiO2) with exposed (101) facets. Based on a combination of various characterizations and simulation calculations, the results proved that anatase can activate thermodynamically stable γ-glycine to β-glycine. The adsorption of glycine on anatase (TiO2) has two forms, one is the zwitterionic form in which the carboxyl group forms a bridge structure with two Ti atoms connected by surface bridging oxygen, and the dissociated form is in which the amino group forms a bond with the surface Ti atom. Among these, glycine is mainly adsorbed to anatase by dissociative molecules on the anatase (TiO2) with exposed (001) facets and by zwitterion adsorption on the anatase (TiO2) with exposed (101) facets. This research elucidates the conditions and mechanism of amino acid adsorption by semiconductor minerals in weak acidic environment, which is similar to the environmental pH that was beneficial to the formation of life on the early Earth. Therefore, these can provide a reference for the further study of the role of semiconductor minerals in the adsorption and polymerization of small biomolecules in the origin of life.
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Jian Y, Liu H, Zhu J, Zeng Y, Liu Z, Hou C, Pu S. Preparation of F-doped H 2Ti 3O 7-{104} nanorods with oxygen vacancies using TiOF 2 as precursor and its photocatalytic degradation activity. RSC Adv 2021; 11:35215-35227. [PMID: 35493161 PMCID: PMC9043010 DOI: 10.1039/d1ra07329j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 10/22/2021] [Indexed: 11/21/2022] Open
Abstract
Photocatalytic degradation is an eco-friendly and sustainable method for the treatment of water pollutants especially tetracycline hydrochloride (TCH). Herein, we developed F-doped H2Ti3O7-{104} nanorods with oxygen vacancies using TiOF2 as a precursor by simple alkali hydrothermal and ion-exchange methods. The phase structure, surface composition, optical properties, specific surface areas and charge separation were analysed by a series of measurements. The effects of KOH concentration on the structure and properties of H2Ti3O7 were investigated. It is confirmed that the TiOF2/H2Ti3O7 composite can be formed in low concentration KOH solution (1 mol L-1), while the H2Ti3O7 single phase can be formed in high concentration KOH solution (>3 mol L-1). The prepared F-doped H2Ti3O7-{104} nanorods provide a high specific surface area of 457 m2 g-1 and a macroporous volume of 0.69 cm3 g-1. The appropriate mesoporous structure of the photocatalyst makes TCH have a stronger affinity on its surface, which is more conducive to the subsequent photodegradation. Moreover, a synergistic mechanism of photosensitization and ligand-metal charge transfer (LMCT) in the photocatalytic degradation of TCH was proposed. In addition, the prepared F-doped H2Ti3O7-{104} nanorods showed excellent cycle stability and resistance to light corrosion. After five cycles of photodegradation, the degradation rate of TCH was only reduced from 92% to 83%. This low-cost strategy could be used for the mass production of efficient photocatalysts, which can be used for TCH clean-up in wastewater treatment.
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Affiliation(s)
- Yue Jian
- Chongqing Academy of Animal Sciences Chongqing 402460 China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture and Rural Affairs Chongqing 402460 China
| | - Huayang Liu
- College of Geology and Environment, Xi'an University of Science and Technology Xi'an 710054 China
| | - Jiaming Zhu
- Chongqing Academy of Animal Sciences Chongqing 402460 China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture and Rural Affairs Chongqing 402460 China
| | - Yaqiong Zeng
- Chongqing Academy of Animal Sciences Chongqing 402460 China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture and Rural Affairs Chongqing 402460 China
| | - Zuohua Liu
- Chongqing Academy of Animal Sciences Chongqing 402460 China
| | - Chentao Hou
- College of Geology and Environment, Xi'an University of Science and Technology Xi'an 710054 China
| | - Shihua Pu
- Chongqing Academy of Animal Sciences Chongqing 402460 China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture and Rural Affairs Chongqing 402460 China
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4
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Hou C, Hao J. A three-dimensional nano-network WO 3/F-TiO 2-{001} heterojunction constructed with OH-TiOF 2 as the precursor and its efficient degradation of methylene blue. RSC Adv 2021; 11:26063-26072. [PMID: 35479479 PMCID: PMC9037076 DOI: 10.1039/d1ra04809k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/12/2021] [Indexed: 12/18/2022] Open
Abstract
In this study, three-dimensional nested WO3/F-TiO2-{001} photocatalysts with different WO3 loadings were prepared by a hydrothermal process and used to degrade methylene blue (MB). The photocatalysts with various ratios of WO3 to OH-TiOF2 can be transformed into a three-dimensional network WO3/F-TiO2 hetero-structure with {001} surface exposure. The results showed that the composite catalyst with 5% WO3, denoted as FWT5, had the best comprehensive degradation effect. FWT5 has a limited band gap of 2.9 eV, which can be used as an advanced photocatalyst to respond to sunlight and degrade MB. The average pore diameter of the composite catalyst is 10.3 nm, and the multi-point specific surface area is 56 m2 g-1. Compared with pure TiOF2, the average pore size of the composite catalyst decreased by 8.44 nm and the specific surface area increased by 51.2 m2 g-1, which provides a larger contact space for the catalytic components and pollutants. Moreover, TiO2 on the {001} surface has higher photocatalytic activity and methylene blue can be better degraded. Under the irradiation of 0.03 g FWT5 composite catalyst with a simulated solar light source for 2 h, the degradation rate of 10 mg L-1 methylene blue can reach 82.9%. The trapping experiment showed that photo-generated holes were the principal functional component of WO3/F-TiO2-{001} photo-catalysis, which could capture OH- and form hydroxyl radical (˙OH) and improved the photocatalytic degradation performance. Kinetic studies show that the photocatalytic degradation of MB fits with the quasi-first order kinetic model.
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Affiliation(s)
- Chentao Hou
- Department of Environmental Engineering, Xi'an University of Science and Technology Xi'an 710054 China
| | - Jing Hao
- Department of Environmental Engineering, Xi'an University of Science and Technology Xi'an 710054 China
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5
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Preparation of hydrogen, fluorine and chlorine doped and co-doped titanium dioxide photocatalysts: a theoretical and experimental approach. Sci Rep 2021; 11:5700. [PMID: 33707517 PMCID: PMC7952686 DOI: 10.1038/s41598-021-81979-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 01/01/2021] [Indexed: 11/10/2022] Open
Abstract
Titanium dioxide (TiO2) has a strong photocatalytic activity in the ultra-violet part of the spectrum combined with excellent chemical stability and abundance. However, its photocatalytic efficiency is prohibited by limited absorption within the visible range derived from its wide band gap value and the presence of charge trapping states located at the band edges, which act as electron–hole recombination centers. Herein, we modify the band gap and improve the optical properties of TiO2 via co-doping with hydrogen and halogen. The present density functional theory (DFT) calculations indicate that hydrogen is incorporated in interstitial sites while fluorine and chlorine can be inserted both as interstitial and oxygen substitutional defects. To investigate the synergy of dopants in TiO2 experimental characterization techniques such as Fourier transform infrared (FTIR), X-ray diffraction (XRD), X-ray and ultra-violet photoelectron spectroscopy (XPS/UPS), UV–Vis absorption and scanning electron microscopy (SEM) measurements, have been conducted. The observations suggest that the oxide’s band gap is reduced upon halogen doping, particularly for chlorine, making this material promising for energy harvesting devices. The studies on hydrogen production ability of these materials support the enhanced hydrogen production rates for chlorine doped (Cl:TiO2) and hydrogenated (H:TiO2) oxides compared to the pristine TiO2 reference.
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Wang J, Lin W, Zhou S, Li Z, Hu H, Tao Y, Zhou S, Zhao X, Kong Y. Probing the formation and optical properties of Ti 3+–TiO 2 with (001) exposed crystal facet by ethanol-assisted fluorination. NEW J CHEM 2021. [DOI: 10.1039/d1nj01591e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
(001)-faceted TiO2 with Ti3+ defects that are exclusively embedded in the bulk lattice near the surface was synthesized.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Wei Lin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shulan Zhou
- Department of Material Science and Engineering
- Jingdezhen Ceramic Institute
- Jingdezhen 333403
- P. R. China
| | - Zheng Li
- Max-Planck Institute for the Structure and Dynamics of Matter
- D-22761 Hamburg
- Germany
| | - Hao Hu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Yinglong Tao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Xian Zhao
- State Key Laboratory of Crystal Material
- Institute of Crystal Material
- Shandong University
- Jinan 250100
- P. R. China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
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7
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Wang J, Lin W, Hu H, Liu C, Cai Q, Zhou S, Kong Y. Engineering Z-system hybrids of 0D/2D F-TiO2 quantum dots/g-C3N4 heterostructures through chemical bonds with enhanced visible-light photocatalytic performance. NEW J CHEM 2021. [DOI: 10.1039/d0nj05500j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A Z-system hybrid of F-TiO2 quantum dots/g-C3N4 nanosheets with an effective pathway (C–O bond) for charge transfer and selective recombination was constructed.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Wei Lin
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Hao Hu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Chunxia Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Qiong Cai
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
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8
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Jian Y, Liu H, Zhu J, Zeng Y, Liu Z, Hou C, Pu S. Transformation of novel TiOF2 nanoparticles to cluster TiO2-{001/101} and its degradation of tetracycline hydrochloride under simulated sunlight. RSC Adv 2020; 10:42860-42873. [PMID: 35514916 PMCID: PMC9058001 DOI: 10.1039/d0ra08476j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 11/19/2020] [Indexed: 11/21/2022] Open
Abstract
The anatase type cluster TiO2-{001/101} was rapidly generated by a one-step hydrothermal method. The transformation process of coral-like TiOF2 nanoparticles to cluster TiO2-{001/101} was investigated for the first time, and the sensitization between cluster TiO2-{001/101} and tetracycline hydrochloride (TCH) was also discussed. The degradation rate of TCH by cluster TiO2-{001/101} under simulated sunlight was 92.3%, and the total removal rate was 1.76 times that of P25. Besides, cluster TiO2-{001/101} settles more easily than P25 in deionized water. The study showed that cluster TiO2-{001/101} derived from coral-like TiOF2 nanoparticles had a strong adsorption effect on TCH, which was attributed to the oxygen vacancy (Ov) and {001} facets of cluster TiO2-{001/101}. The strong adsorption effect promoted the sensitization between cluster TiO2-{001/101} and TCH, and widened the visible light absorption range of cluster TiO2-{001/101}. In addition, the fluorescence emission spectrum showed that cluster TiO2-{001/101} had a lower luminous intensity, which was attributed to the heterojunction formed by {001} facets and {101} facets that reduces the recombination rate of carriers. It should be noted that cluster TiO2-{001/101} still has good degradation performance for TCH after five cycles of degradation. This study provides a new idea for the synthesis of cluster TiO2-{001/101} with high photocatalytic performance for the treatment of TCH wastewater. Degradation of tetracycline hydrochloride by cluster TiO2-{001/101} under simulated sunlight.![]()
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Affiliation(s)
- Yue Jian
- Chongqing Academy of Animal Sciences
- Chongqing 402460
- China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest
- Ministry of Agriculture and Rural Affairs
| | - Huayang Liu
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- China
| | - Jiaming Zhu
- Chongqing Academy of Animal Sciences
- Chongqing 402460
- China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest
- Ministry of Agriculture and Rural Affairs
| | - Yaqiong Zeng
- Chongqing Academy of Animal Sciences
- Chongqing 402460
- China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest
- Ministry of Agriculture and Rural Affairs
| | - Zuohua Liu
- Chongqing Academy of Animal Sciences
- Chongqing 402460
- China
| | - Chentao Hou
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- China
| | - Shihua Pu
- Chongqing Academy of Animal Sciences
- Chongqing 402460
- China
- Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest
- Ministry of Agriculture and Rural Affairs
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9
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Klein E, Lesyuk R, Klinke C. Insights into the formation mechanism of two-dimensional lead halide nanostructures. NANOSCALE 2018; 10:4442-4451. [PMID: 29451570 PMCID: PMC5831117 DOI: 10.1039/c7nr09564c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/08/2018] [Indexed: 05/28/2023]
Abstract
We present a colloidal synthesis strategy for lead halide nanosheets with a thickness of far below 100 nm. Due to the layered structure and the synthesis parameters the crystals of PbI2 are initially composed of many polytypes. We propose a mechanism which gives insight into the chemical process of the PbI2 formation. Further, we found that the crystal structure changes with increasing reaction temperature or by performing the synthesis for longer time periods changing for the final 2H structure. In addition, we demonstrate a route to prepare nanosheets of lead bromide as well as lead chloride in a similar way. Lead halides can be used as a detector material for high-energy photons including gamma and X-rays.
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Affiliation(s)
- Eugen Klein
- Institute of Physical Chemistry , University of Hamburg , Grindelallee 117 , 20146 Hamburg , Germany .
| | - Rostyslav Lesyuk
- Institute of Physical Chemistry , University of Hamburg , Grindelallee 117 , 20146 Hamburg , Germany .
- Pidstryhach Institute for applied problems of mechanics and mathematics of NAS of Ukraine , Naukowa str. 3b , 79060 Lviv , Ukraine
| | - Christian Klinke
- Institute of Physical Chemistry , University of Hamburg , Grindelallee 117 , 20146 Hamburg , Germany .
- Department of Chemistry , Swansea University – Singleton Park , Swansea SA2 8PP , UK
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Liu L, Jiang Y, Zhao H, Chen J, Cheng J, Yang K, Li Y. Engineering Coexposed {001} and {101} Facets in Oxygen-Deficient TiO2 Nanocrystals for Enhanced CO2 Photoreduction under Visible Light. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02098] [Citation(s) in RCA: 428] [Impact Index Per Article: 53.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lianjun Liu
- University of Wisconsin-Milwaukee, Mechanical Engineering
Department, Milwaukee, Wisconsin 53211, United States
| | - Yuqiu Jiang
- University of Wisconsin-Milwaukee, Mechanical Engineering
Department, Milwaukee, Wisconsin 53211, United States
| | - Huilei Zhao
- Texas A&M University, Department of Mechanical Engineering, College Station, Texas 77843, United States
| | - Jiatang Chen
- Texas A&M University, Department of Mechanical Engineering, College Station, Texas 77843, United States
| | - Jianli Cheng
- University of California, San Diego, Department of
NanoEngineering, La Jolla, California 92093, United States
| | - Kesong Yang
- University of California, San Diego, Department of
NanoEngineering, La Jolla, California 92093, United States
| | - Ying Li
- University of Wisconsin-Milwaukee, Mechanical Engineering
Department, Milwaukee, Wisconsin 53211, United States
- Texas A&M University, Department of Mechanical Engineering, College Station, Texas 77843, United States
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11
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Zhu K, Zhang C, Guo S, Yu H, Liao K, Chen G, Wei Y, Zhou H. Sponge-Like Cathode Material Self-Assembled from Two-Dimensional V2O5Nanosheets for Sodium-Ion Batteries. ChemElectroChem 2015. [DOI: 10.1002/celc.201500240] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kai Zhu
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
- Key Laboratory of Physics and Technology for Advanced Batteries; (Ministry of Education); College of Physics; Jilin University; Qianjin Street 2699 Changchun China
| | - Chaofeng Zhang
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
| | - Shaohua Guo
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
| | - Haijun Yu
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
| | - Kaiming Liao
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
| | - Gang Chen
- Key Laboratory of Physics and Technology for Advanced Batteries; (Ministry of Education); College of Physics; Jilin University; Qianjin Street 2699 Changchun China
| | - Yingjin Wei
- Key Laboratory of Physics and Technology for Advanced Batteries; (Ministry of Education); College of Physics; Jilin University; Qianjin Street 2699 Changchun China
| | - Haoshen Zhou
- Energy Technology Research Institute; Institution National Institute of Advanced Industrial Science and; Technology (AIST); Umezono 1-1-1 Tsukuba Japan
- National Laboratory of Solid State Microstructures; Department of Energy Science; Nanjing University; Nanjing 210093 China
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12
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Yang Y, Zhang T, Le L, Ruan X, Fang P, Pan C, Xiong R, Shi J, Wei J. Quick and facile preparation of visible light-driven TiO2 photocatalyst with high absorption and photocatalytic activity. Sci Rep 2014; 4:7045. [PMID: 25391987 PMCID: PMC4229673 DOI: 10.1038/srep07045] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/28/2014] [Indexed: 12/05/2022] Open
Abstract
Self-doping TiO2 has recently attracted considerable attention for its high photocatalytic activity under visible-light irradiation. However, the literature reported synthetic methods until now were very time-consuming. In this study, we establish a quick and facile method for obtaining self-doping TiO2 with the use of directly treated commercial P25 at a desired temperature for only 5 min through spark plasma sintering technology. With the using of this method, the modified P25 samples exhibit significantly high photoelectric and photocatalytic performance. Furthermore, the sample prepared at 600°C exhibits the optimum catalytic activity. The photodegradation and H2 evolution rates of this samples are significantly higher than those of unmodified P25 sample under visible-light irradiation. The physical origin of the visible-light absorption for the modified P25 samples is investigated in detail according to their structural, optical, and electronic properties. This work will provide a quick and facile method for the large-scale synthesis of visible-light driven photocatalyst for practical applications.
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Affiliation(s)
- Yucheng Yang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Ting Zhang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Ling Le
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xuefeng Ruan
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Pengfei Fang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Chunxu Pan
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Rui Xiong
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Jing Shi
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Jianhong Wei
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China
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13
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Li B, Zhao Z, Zhou Q, Meng B, Meng X, Qiu J. Highly Efficient Low-Temperature Plasma-Assisted Modification of TiO2Nanosheets with Exposed {001} Facets for Enhanced Visible-Light Photocatalytic Activity. Chemistry 2014; 20:14763-70. [DOI: 10.1002/chem.201402664] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 06/03/2014] [Indexed: 11/12/2022]
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