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Slapničar Š, Žerjav G, Zavašnik J, Roškarič M, Finšgar M, Pintar A. Novel TiO 2-Supported Gold Nanoflowers for Efficient Photocatalytic NO x Abatement. Molecules 2024; 29:3333. [PMID: 39064911 PMCID: PMC11279453 DOI: 10.3390/molecules29143333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
In this study, we pioneered the synthesis of nanoflower-shaped TiO2-supported Au photocatalysts and investigated their properties. Au nanoflowers (Au NFs) were prepared by a Na-citrate and hydroquinone-based preparation method, followed by wet impregnation of the derived Au NFs on the surface of TiO2 nanorods (TNR). A uniform and homogeneous distribution of Au NFs was observed in the TNR + NF(0.7) sample (lower Na-citrate concentration), while their distribution was heterogeneous in the TNR + NF(1.4) sample (higher Na-citrate concentration). The UV-Vis DR spectra revealed the size- and shape-dependent optical properties of the Au NFs, with the LSPR effect observed in the visible region. The solid-state EPR spectra showed the presence of Ti3+, oxygen vacancies and electron interactions with organic compounds on the catalyst surface. In the case of the TNR + NF(0.7) sample, high photocatalytic activity was observed in the H2-assisted reduction of NO2 to N2 at room temperature under visible-light illumination. In contrast, the TNR + NF(1.4) catalyst as well as the heat-treated samples showed no ability to reduce NO2 under visible light, indicating the presence of deformed Au NFs limiting the LSPR effect. These results emphasized the importance of the choice of synthesis method, as this could strongly influence the photocatalytic activity of the Au NFs.
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Affiliation(s)
- Špela Slapničar
- Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova ulica 19, 1001 Ljubljana, Slovenia; (Š.S.); (G.Ž.); (M.R.)
| | - Gregor Žerjav
- Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova ulica 19, 1001 Ljubljana, Slovenia; (Š.S.); (G.Ž.); (M.R.)
| | - Janez Zavašnik
- Gaseous Electronics, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;
| | - Matevž Roškarič
- Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova ulica 19, 1001 Ljubljana, Slovenia; (Š.S.); (G.Ž.); (M.R.)
| | - Matjaž Finšgar
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia;
| | - Albin Pintar
- Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova ulica 19, 1001 Ljubljana, Slovenia; (Š.S.); (G.Ž.); (M.R.)
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Xue T, Li J, Chen L, Li K, Hua Y, Yang Y, Dong F. Photocatalytic NO x removal and recovery: progress, challenges and future perspectives. Chem Sci 2024; 15:9026-9046. [PMID: 38903227 PMCID: PMC11186336 DOI: 10.1039/d4sc01891e] [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: 03/21/2024] [Accepted: 05/18/2024] [Indexed: 06/22/2024] Open
Abstract
The excessive production of nitrogen oxides (NO x ) from energy production, agricultural activities, transportation, and other human activities remains a pressing issue in atmospheric environment management. NO x serves both as a significant pollutant and a potential feedstock for energy carriers. Photocatalytic technology for NO x removal and recovery has received widespread attention and has experienced rapid development in recent years owing to its environmental friendliness, mild reaction conditions, and high efficiency. This review systematically summarizes the recent advances in photocatalytic removal, encompassing NO x oxidation removal (including single and synergistic removal and NO3 - decomposition), NO x reduction to N2, and the emergent NO x upcycling into green ammonia. Special focus is given to the molecular understanding of the interfacial nitrogen-associated reaction mechanisms and their regulation pathways. Finally, the status and the challenges of photocatalytic NO x removal and recovery are critically discussed and future outlooks are proposed for their potential practical application.
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Affiliation(s)
- Ting Xue
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China Chengdu 611731 China
| | - Jing Li
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China Chengdu 611731 China
| | - Lvcun Chen
- School of Environmental Science and Engineering, Southwest Jiaotong University Chengdu 611756 China
| | - Kanglu Li
- School of Environmental Science and Engineering, Southwest Jiaotong University Chengdu 611756 China
| | - Ying Hua
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China Chengdu 611731 China
| | - Yan Yang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
- Synergy Innovation Institute of GDUT Shantou 515041 Guangdong China
| | - Fan Dong
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China Chengdu 611731 China
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Tang Q, Liu C, Lv D, Zhao L, Jiang L, Wang J. Biotemplated Fe/La-co-doped TiO 2 for photocatalytic depth treatment of compressed leachate from refuse transfer station. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:40941-40957. [PMID: 38837031 DOI: 10.1007/s11356-024-33870-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 05/27/2024] [Indexed: 06/06/2024]
Abstract
Compressed leachate is a contaminated liquid containing various organic and inorganic pollutants produced in municipal refuse transfer stations, which pollute soil and groundwater, posing serious risks to the environment and human health. The Environmental Technology Co., Ltd. (Shenzhen, Guangdong Province, South China) treated compressed leachate obtained from a refuse transfer station. The chemical oxygen demand (COD) (641.2 mg/L) of treated compressed leachate did not meet the wastewater quality standards in China for discharge into municipal sewers (COD ≤ 500 mg/L) and the company's design discharge requirements (COD ≤ 400 mg/L). Therefore, their further in-depth treatment is necessary. To this end, waste tobacco leaves were used as the biotemplate herein, and Fe/La-co-doped TiO2 (xFe,yLa)-TTiO2(g) was synthesized using a solvothermal-assisted biotemplating method. The photocatalytic depth treatment of compressed leachate was performed under simulated solar light using the prepared catalysts. After (3Fe,3La)-TTiO2(g) treatment, the COD of the leachate decreased from 641.2 to 280.1 mg/L, and the COD removal rate was 1.2, 1.1, and 1.6 times higher than that of pure Fe-doped, La-doped and non-biological template TiO2, respectively. Characterization confirmed that the biological template endowed the catalyst with a unique morphology and high specific surface area. Its rich activity sites are conducive to enhancing the adsorption capacity of pollutants and providing an ideal place for photocatalytic reactions. Co-doping with iron and lanthanum ions altered the band structure of TiO2 and promoted the interconversion of Fe3+/Fe2+ and La3+/La2+ during photocatalysis. First-principles density functional theory simulations demonstrated that co-doping Fe and La in TiO2 created impurity levels that facilitated the transfer of photogenerated electrons. This study provides a new purification pathway for the depth treatment of compressed leachate.
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Affiliation(s)
- Qinyuan Tang
- School of Chemical Sciences and Engineering, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, Yunnan University, Kunming, 650091, People's Republic of China
| | - Chang Liu
- School of Chemical Sciences and Engineering, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, Yunnan University, Kunming, 650091, People's Republic of China
| | - Die Lv
- School of Chemical Sciences and Engineering, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, Yunnan University, Kunming, 650091, People's Republic of China
| | - Lixia Zhao
- School of Chemical Sciences and Engineering, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, Yunnan University, Kunming, 650091, People's Republic of China
| | - Liang Jiang
- School of Engineering, Yunnan University, Kunming, 650091, People's Republic of China
| | - Jiaqiang Wang
- School of Chemical Sciences and Engineering, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, Yunnan University, Kunming, 650091, People's Republic of China.
- School of Materials and Energy, Yunnan University, Kunming, 650091, People's Republic of China.
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Zhang J, Wang W, Chen X, Jin J, Yan X, Huang J. Single-Atom Ni Supported on TiO 2 for Catalyzing Hydrogen Storage in MgH 2. J Am Chem Soc 2024; 146:10432-10442. [PMID: 38498436 DOI: 10.1021/jacs.3c13970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
As an efficient and clean energy carrier, hydrogen is expected to play a key role in future energy systems. However, hydrogen-storage technology must be safe with a high hydrogen-storage density, which is difficult to achieve. MgH2 is a promising solid-state hydrogen-storage material owing to its large hydrogen-storage capacity (7.6 wt %) and excellent reversibility, but its large-scale utilization is restricted by slow hydrogen-desorption kinetics. Although catalysts can improve the hydrogen-storage kinetics of MgH2, they reduce the hydrogen-storage capacity. Single-atom catalysts maximize the atom utilization ratio and the number of interfacial sites to boost the catalytic activity, while easy aggregation at high temperatures limits further application. Herein, we designed a single-atom Ni-loaded TiO2 catalyst with superior thermal stability and catalytic activity. The optimized 15wt%-Ni0.034@TiO2 catalyst reduced the onset dehydrogenation temperature of MgH2 to 200 °C. At 300 °C, the H2 released and absorbed 4.6 wt % within 5 min and 6.53 wt % within 10 s, respectively. The apparent activation energies of MgH2 dehydrogenation and hydrogenation were reduced to 64.35 and 35.17 kJ/mol of H2, respectively. Even after 100 cycles of hydrogenation and dehydrogenation, there was still a capacity retention rate of 97.26%. The superior catalytic effect is attributed to the highly synergistic catalytic activity of single-atom Ni, numerous oxygen vacancies, and multivalent Tix+ in the TiO2 support, in which the single-atom Ni plays the dominant role, accelerating electron transfer between Mg2+ and H- and weakening the Mg-H bonds. This work paves the way for superior hydrogen-storage materials for practical unitization and also extends the application of single-atom catalysis in high-temperature solid-state reactions.
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Affiliation(s)
- Jiyue Zhang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Wenda Wang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Xiaowei Chen
- School of Science, Jimei University, Xiamen 361021, China
| | - Jinlong Jin
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Xiaojun Yan
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
- National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, Beijing 100191, China
- Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China
| | - Jianmei Huang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
- National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, Beijing 100191, China
- Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China
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Gatasheh MK, Daoud MS, Kassim H. Bandgap Narrowing of BaTiO 3-Based Ferroelectric Oxides through Cobalt Doping for Photovoltaic Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7528. [PMID: 38138671 PMCID: PMC10745005 DOI: 10.3390/ma16247528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/22/2023] [Accepted: 08/28/2023] [Indexed: 12/24/2023]
Abstract
Following the finding of power conversion efficiency above the Shockley-Queisser limit in BaTiO3 (BTO) crystals, ferroelectric oxides have attracted scientific interest in ferroelectric photovoltaics (FPV). However, since ferroelectric oxides have a huge bandgap (>3 eV), progress in this sector is constrained. This paper proposes and demonstrates a new ferroelectric BaTi1-xCoxO3 powder (0 ≤ x ≤ 0.08), abbreviated as BTCx, that exhibited a bandgap decrease with increased Co content. Notably, changing the composition from x = 0.0 to 0.08 caused the system to show a bandgap drop from 3.24 to 2.42 eV. The ideal design with x = 0.08 displayed an abnormal PV response. Raman spectroscopy measurements were used to investigate the cause of the bandgap decrease, and density functional theory was used to interpret the analyzed results. According to our findings, Co2+ doping and oxygen octahedral distortions enhance bandgap reduction. This research sheds light on how bandgap tuning developed and laid the way for investigating novel low-bandgap ferroelectric materials for developing next-generation photovoltaic applications.
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Affiliation(s)
- Mansour K. Gatasheh
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (M.K.G.); (M.S.D.)
| | - Mohamed Saad Daoud
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (M.K.G.); (M.S.D.)
| | - Hamoud Kassim
- Department of Physics & Astronomy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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6
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Guan S, Cheng Y, Hao L, Yoshida H, Tarashima C, Zhan T, Itoi T, Qiu T, Lu Y. Oxygen vacancies induced band gap narrowing for efficient visible-light response in carbon-doped TiO 2. Sci Rep 2023; 13:14105. [PMID: 37644040 PMCID: PMC10465500 DOI: 10.1038/s41598-023-39523-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/26/2023] [Indexed: 08/31/2023] Open
Abstract
The band gap of rutile TiO2 has been narrowed, via the formation of oxygen vacancies (OVs) during heat treatment in carbon powder (cHT) with embedding TiO2 coatings. The narrowed band gap efficiently improves the visible light response of TiO2 coatings, to further enhance the visible-light-driven photocatalytic activity. The change in OVs during cHT has been studied by manipulation of cHT temperature and time. The effect of OVs on the band structure of nonstoichiometric TiO2-x has been further calculated by first-principles calculations. With raising the temperature, SEM images show that the nano-size fiber-like structure forms on the surface of TiO2 coatings, and the amount of the fiber-like structure significantly increases and their size changes from nano to micro under 800 °C, contributing to cause an increase in accessible surface area. The UV-Vis results reveal that the band gap of TiO2 has been narrowed during cHT, due to the formed oxygen vacancies. The XPS results further confirm that the formation of surface defects including OVs, and the XPS depth profile further shows the decreased relative amount of O whereas increased relative amount of carbon. Notably, after cHT for TiO2 coatings, the photocatalytic activity first increases then decreases with raising the temperature, achieving approximately 3 times at 850 °C. The first-principles calculation suggest that the OVs in TiO2 coatings with localized electrons could facilitate the band gap narrowing, further favoring to enhance the photocatalytic activity under visible light.
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Affiliation(s)
- Sujun Guan
- Research Center for Space System Innovation, Tokyo University of Science, Chiba, Japan
| | - Yanling Cheng
- Beijing Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing, China.
| | - Liang Hao
- College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, China
| | | | - Chiaki Tarashima
- Research Center for Space System Innovation, Tokyo University of Science, Chiba, Japan
| | - Tianzhuo Zhan
- Bio-Nano Electronics Research Centre, Toyo University, Saitama, Japan
| | - Takaomi Itoi
- Graduate School and Faculty of Engineering, Chiba University, Chiba, Japan
| | - Tangbin Qiu
- Graduate School and Faculty of Engineering, Chiba University, Chiba, Japan
| | - Yun Lu
- Graduate School and Faculty of Engineering, Chiba University, Chiba, Japan.
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Wang Y, Li X, Zhou X, Song P, Zeng M, Shang W, Xu YQ, Jia Z, Yang GY. Semirigid Highly Conjugated Zirconium-Organic Framework for the Capture of Micropollutants and Solar-Light Photodegradation. Inorg Chem 2023. [PMID: 37262300 DOI: 10.1021/acs.inorgchem.3c00365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Micro-organic pollutants, particularly organic dyes and personal care products (PPCPs), are widely present in wastewater, and thus pose a serious risk to human health. The capture and solar-light photodegradation of micro-organic pollutants are highly challenging tasks, which require the design and synthesis of microporous materials with specific structures. As we know, organic dyes and PPCPs can be absorbed via π-π* stacking. In this paper, an iron-based metal-organic framework (Fe-UiO-68-terNap) containing semirigid conjugated aromatic ligands is prepared for the capture and solar-light photodegradation of multiple water contaminants. UiO-68-terNap was synthesized based on ternaphthalene with π-π* stacking, which would increase the adsorption capacities of organic micropollutants in wastewater. Additionally, the formation of Fe-O-Zr enhances the charge-separation ability resulting in the successful degradation of micropollutants in 240 min. The novel material has been elucidated by single-crystal X-ray diffraction and Fe K-edge XANES, which provide key insights at a molecular level for the design of novel materials for the capture and photodegradation of organic micropollutants.
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Affiliation(s)
- Yongchun Wang
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Xiang Li
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Xusheng Zhou
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Panqi Song
- National Facility for Protein Science in Shanghai, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P. R. China
| | - Muling Zeng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Wenhui Shang
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Yan-Qing Xu
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Zhiyu Jia
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Guo-Yu Yang
- Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
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Hailili R, Reyimu X, Li Z, Lu X, Bahnemann DW. Tuning the Microstructures of ZnO To Enhance Photocatalytic NO Removal Performances. ACS APPLIED MATERIALS & INTERFACES 2023; 15:23185-23198. [PMID: 37129564 DOI: 10.1021/acsami.3c02286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Effective removal of kinetically inert dilute nitrogen oxide (NO, ppb) without NO2 emission is still a challenging topic in environmental pollution control. One effective approach to reducing the harm of NO is the construction of photocatalysts with diversified microstructures and atomic arrangements that could promote adsorption, activation, and complete removal of NO without yielding secondary pollution. Herein, microstructure regulations of ZnO photocatalysts were attempted by altering the reaction temperature and alkalinity in a unique ionic liquid-based solid-state synthesis and further investigated for the removal of dilute NO upon light irradiation. Microstructure observations indicated that as-tuned photocatalysts displayed unique nucleation, diverse morphologies (spherical nanoparticles, short and long nanorods), defect-related optical characteristics, and enhanced carrier separations. Such defect-related surface-interface aspects, especially Vo″-related defects of ZnO devoted them to the 4.16-fold enhanced NO removal and 2.76 magnitude order decreased NO2 yields, respectively. Improved NO removal and toxic product inhabitation in as-tuned ZnO was disclosed by mechanistic exploitations. It was revealed that regulated microstructures, defect-related charge carrier separation, and strengthened surface interactions were beneficial to active species production and molecular oxygen activation in ZnO, subsequently contributing to the improved NO removal and simultaneous avoidance of NO2 formation. This investigation shed light on the facile regulation of microstructures and the roles of surface chemistry in the oxidation of low concentration NO in the ppb level upon light illumination.
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Affiliation(s)
- Reshalaiti Hailili
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, P. R. China
- Institut für Technische Chemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - Xiaokaiti Reyimu
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, P. R. China
| | - Zelong Li
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, P. R. China
| | - Xu Lu
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, P. R. China
| | - Detlef W Bahnemann
- Institut für Technische Chemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
- Laboratory "Photoactive Nanocomposite Materials", Saint Petersburg State University, Saint-Petersburg 198504, Russia
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Rahman KH, Kar AK, Chen KC, Chen CJ. Highly effective Fe-doped TiO 2nanoparticles for removal of toxic organic dyes under visible light illumination. NANOTECHNOLOGY 2023; 34:245707. [PMID: 36917852 DOI: 10.1088/1361-6528/acc407] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
This article addresses the synthesis of Fe3+doped TiO2nanoparticles with variations of molar concentrations of Fe3+and their adequate use as potential photocatalysts for Photocatalysis applications. Synthesized photocatalysts were characterized thoroughly by different analytical techniques in terms of morphological, chemical, structural, crystalline, optical, electronic structure, surface area etc properties. The occurrence of red shift phenomenon of the energy band gap attributes to the transfer of charges and transition between the d electrons of dopant and conduction band (CB) or valence band (VB) of TiO2. The doping of Fe3+ions generates more trap sites for charge carriers with the surface trap sites. Thorough experimental conclusions revealed that the Fe3+ions necessarily regulate the catalytic property of TiO2nanomaterial. The obtained total degradation efficiency rate of Methylene Blue (MB) was 93.3% in the presence of 0.1 M Fe3+in the host material and for Malachite Green Oxalate the efficiency was 100% in the presence of 0.05 M and 0.1 M Fe3+in the host material. In both the cases the total visible light irradiation time was 90 min. The adsorption properties of the photocatalysts have been also performed in a dark for 90 min in the presence of MB dye. However, till now there are hardly reported photocatalysts which shows complete degradation of these toxic organic dyes by visible light driven photocatalysis. of potential values of valence and conduction band shows the production of active oxidizing species for hydrogen yield and the possible mechanism of the Schottky barrier has been proposed. A schematic diagram of visible light driven Photocatalysis has been pictured showing degradation activity of Fe3+-TiO2catalysts sample.
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Affiliation(s)
- Kazi Hasibur Rahman
- Micro and Nanoscience Lab, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, Jharkhand, India
| | - Asit Kumar Kar
- Micro and Nanoscience Lab, Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, Jharkhand, India
| | - Kuan-Chung Chen
- Department of Environmental Science & Engineering, National Pingtung University of Science and Technology, Taiwan
| | - Ching-Jung Chen
- Department of Environmental Science & Engineering, National Pingtung University of Science and Technology, Taiwan
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10
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Qin X, Ji Y, Nong L, Wang C, Li H, Xie C, Ji L, Zhu A. Oxygen vacancy-rich C/Ti3C2/(001)TiO2 hollow microspheres and the photocatalytic degradation of organic pollutants. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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11
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Composite TiO 2-based photocatalyst with enhanced performance. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2023; 22:73-86. [PMID: 36152273 DOI: 10.1007/s43630-022-00300-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 09/05/2022] [Indexed: 01/12/2023]
Abstract
TiO2 is the most studied photocatalyst because of its non-toxicity, chemical stability, and low cost. However, the problem of TiO2 is its low activity in the visible region of the spectrum. In this study, we focused on the preparation of composite photocatalytic materials with altered light absorption properties. TiO2 P25 and various metal oxides were mechanically joined by ball-milling and immobilized on glass plates. The prepared samples were evaluated based on their ability to degrade NO in gas phase. The formation of undesirable byproducts was also investigated. Four best performing composites were later chosen, characterized, and further evaluated under various conditions. According to their performance, the metal oxide additives can be divided into three groups. P25/Fe2O3 showed the most promising results-an increase in overall deNOx activity under modified ISO conditions and altered selectivity (less NO2 is formed) under both simulated outdoor and simulated indoor conditions. On the other hand, P25/V2O5 composite showed negligible photocatalytic activity. The intermediate group includes P25/WO3 and P25/ZnO photocatalysts, whose performances are similar to those of pristine P25.
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12
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Guo P, Deák P, Fu X, Frauenheim T, Xiao J. Fundamental Limit of Selectivity in Photocatalytic Denitrification over Titania. J Phys Chem Lett 2022; 13:11051-11058. [PMID: 36414016 DOI: 10.1021/acs.jpclett.2c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Although photocatalytic decomposition of NO (deNO) into N2 and O2 is low-cost and non-polluting, it has a low NO conversion efficiency. Establishing the activity and selectivity trend among active sites is an important base to explore and improve the deNO processes. Because the experimental performances are determined by the reaction rate, it is worthwhile to investigate the kinetic limiting steps calculated by comparative microkinetic modeling. We found that, without illumination, N2 production is inactive over various TiO2 surfaces/sites, but photogenerated holes can break the scaling relation of the dark condition by weakening O2* adsorption, leading to a significant increase in deNO activity on defective titania surfaces. However, the low N2 selectivity can be attributed to the small strength of N2O adsorption. In contrast, the N2 selectivity is enhanced in Ti-modified zeolite because of a stronger N2O* adsorption. We demonstrate here that the reaction phase diagram analysis can clearly establish a global picture of reaction activity and selectivity over various catalytic sites. In combination with microkinetic modeling, it can effectively determine the kinetic limits, providing insights to improve the design of photocatalysts.
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Affiliation(s)
- Pu Guo
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
| | - Peter Deák
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
- Computational Science Research Center, 10 East Xibeiwang Road, Beijing100193, People's Republic of China
| | - Xiaoyan Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, Liaoning116023, People's Republic of China
| | - Thomas Frauenheim
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
- Computational Science Research Center, 10 East Xibeiwang Road, Beijing100193, People's Republic of China
- Computational Science and Applied Research Institute (CSAR), Shenzhen, Guangdong518110, People's Republic of China
| | - Jianping Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, Liaoning116023, People's Republic of China
- Dalian National Laboratory for Clean Energy, Dalian, Liaoning116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing100049, People's Republic of China
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13
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Cheng C, Chen D, Li N, Li H, Xu Q, He J, Lu J. NH 2-MIL-125(Ti) modified graphitic carbon nitride with carbon vacancy for efficient photocatalytic NO removal. CHEMOSPHERE 2022; 307:135660. [PMID: 35835237 DOI: 10.1016/j.chemosphere.2022.135660] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/25/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
This paper reports the application of NH2-MIL-125(Ti) modified carbon nitride Cv-C3N4 with carbon vacancies in the removal of NO. We performed a series of characterizations of the complex and compared various ratios with the individual components. The results of UV spectrum analysis show that the composite's range of light absorption expanded due to the modification of Ti metal-organic framework. Furthermore, the results of photocurrent and electrical impedance indicate the compound has a better ability to generate and transfer electrons. The increase in the compound's NO removal efficiency (up to 63%) indicates that MOF has a positive effect on Cv-C3N4 modification-a good method for photocatalysis. Moreover, the compound can promote photocatalysis in a favorable direction.
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Affiliation(s)
- Cheng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China.
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Jinhui He
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou Industrial Park, Suzhou, 215123, China.
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14
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Tan T, Wang X, Zhou X, Ma H, Fang R, Geng Q, Dong F. Highly active Cs 2SnCl 6/C 3N 4 heterojunction photocatalysts operating via interfacial charge transfer mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129694. [PMID: 36104916 DOI: 10.1016/j.jhazmat.2022.129694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/19/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
In this study, a novel lead-free perovskite heterojunction Cs2SnCl6/C3N4 composite was constructed and applied for photocatalytic NO purification. After design optimization, the Cs2SnCl6/C3N4 heterojunction exhibit excellent and stable photocatalytic NO purification ability under visible-light irradiation, which is significantly better than pristine Cs2SnCl6 and C3N4. Combined in-situ DRIFTS and electron spin resonance spin-trapping, the mechanism of Cs2SnCl6/C3N4 photocatalytic NO removal was revealed. Under visible-light irradiation, the photo-generated electrons on the conduction band of C3N4 would spontaneously migrate to the CB of Cs2SnCl6, leaving holes (h+) on the valence band of C3N4, contributing to efficiently segregated charge carriers and improved photocatalytic NO purification. Density functional theory calculations also revealed the directional electron transfer at the C3N4 and Cs2SnCl6 interface, in which the charge was migrated from C3N4 to Cs2SnCl6 induced by the internal electric field. This research sheds fresh light on the fabrication of Cs2SnCl6/C3N4 heterojunctions as well as its effective interfacial charge separation.
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Affiliation(s)
- Tianqi Tan
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xuemei Wang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xi Zhou
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Hao Ma
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Ruimei Fang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Qin Geng
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China.
| | - Fan Dong
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China; State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
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15
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Li N, Wang C, Zhang K, Lv H, Yuan M, Bahnemann DW. Progress and prospects of photocatalytic conversion of low-concentration NO. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64139-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Hailili R, Ji H, Wang K, Dong X, Chen C, Sheng H, Bahnemann DW, Zhao J. ZnO with Controllable Oxygen Vacancies for Photocatalytic Nitrogen Oxide Removal. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Reshalaiti Hailili
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Key Laboratory of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, People’s Republic of China
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- Institut für Technische Chemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - Hongwei Ji
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Kaiwen Wang
- MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Key Laboratory of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, People’s Republic of China
| | - Xing’an Dong
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Hua Sheng
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Detlef W. Bahnemann
- Institut für Technische Chemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstr. 3, 30167 Hannover, Germany
| | - Jincai Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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17
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Cai W, Cui J, Li K, Zhang Z, Xie H, Zhong Q, Qu H. Insight into the surface property modification-enhanced C 3N 4 performance of photocatalytic nitrogen fixation. Chem Commun (Camb) 2022; 58:6502-6505. [PMID: 35575204 DOI: 10.1039/d2cc01602h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface properties of the catalyst have an important influence on the process of heterogeneous reactions. We modified g-C3N4 with dicarboxylic acids with different hydrophobicity. Through experiments, we found that the NH3 yields of modified carbon nitrides can reach 267.89 μmol h-1 g-1 when only dissolved nitrogen is involved. But if both dissolved nitrogen and gaseous nitrogen are present in the reaction, the NH3 yield can reach as high as 751.83 μmol h-1 g-1, demonstrating that the participation of dissolved nitrogen alone is not enough and gaseous nitrogen indeed promotes the reaction of photocatalytic nitrogen fixation. Meanwhile, the nitrogen fixation performance of the catalyst is positively correlated with its hydrophobicity, indicating that a reasonable adjustment of the catalysts' hydrophobicity can give them a certain wettability to activate water, while also providing a hydrophobic surface for insoluble gas-phase nitrogen adsorption. This provides new ideas and directions for the design of future heterogeneous reaction catalysts.
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Affiliation(s)
- Wei Cai
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Jian Cui
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Kang Li
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Zhicheng Zhang
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Huifang Xie
- Department of Environmental Science and Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China
| | - Qin Zhong
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
| | - Hongxia Qu
- Department of Chemical Engineering and Technology, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China.
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18
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Bastida MAC, Maldonado YG, Reyes-Vidal Y, Solís-López M, Coutino-González E, Espejel-Ayala F. Synthesis of sodium titanates and their use in the photocatalytic degradation of NO. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42768-42779. [PMID: 35091948 DOI: 10.1007/s11356-022-18724-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
The synthesis and characterization of sodium titanates (ST), and their evaluation in the photocatalytic reduction of nitric oxide (NO) are described herein. The materials were synthesized by a hydrothermal route using 5 M NaOH as the mineralizer agent and a TiO2 content of 0.06 mg/mL (expressed as the mass ratio of TiO2/mL of NaOH), at 170 °C for 48 h, resulting in sodium tri- and hexa-titanates. A nanotubular morphology was observed for the ST, as proved by scanning electron microscopy (SEM); a subsequent heat-treatment at 400 °C allowed a complete transformation of sodium tri- to hexa-titanates and an increase in bandgap. The obtained ST were impregnated with Ag+ and Zn+ cations, ST-Ag and ST-Zn, respectively, to tune the materials' bandgap. XPS analysis of the ST-Ag materials showed evidence of metallic Ag, pointing to the formation of silver nanoparticles, whereas for ST-Zn oxide phases were mainly spotted. The materials were evaluated for the photocatalytic reduction of NO using a reactor fed with a continuous flow rate of NO, generated in situ at a flow of 280 mL/min using nitrogen and a 253-nm UV irradiation source. The photocatalytic tests showed that pristine ST (tri- and hexa-titanates) displayed better performance in the reduction of NO with respect to the impregnated samples (ST-Ag, ST-Zn). Maximum degradation efficiencies of 80% were achieved when 1 g of photocatalyst was used with a flow of 280 mL/min and a 253 nm UV lamp.
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Affiliation(s)
- Marco Antonio Cueto Bastida
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico Querétaro, s/n., Pedro Escobedo, Querétaro, México, 76703
| | | | - Yolanda Reyes-Vidal
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico Querétaro, s/n., Pedro Escobedo, Querétaro, México, 76703
- Consejo Nacional de Ciencia y Tecnología (CONACYT)-Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Parque Tecnológico Querétaro s/n, Sanfandila, Pedro Escobedo, Querétaro, C.P. 76703, México
| | - Myriam Solís-López
- Department of Electrical Engineering (SEES), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Ciudad de México, México, CP 07360
| | | | - Fabricio Espejel-Ayala
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico Querétaro, s/n., Pedro Escobedo, Querétaro, México, 76703.
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19
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Wang J, Wang Z, Wang W, Wang Y, Hu X, Liu J, Gong X, Miao W, Ding L, Li X, Tang J. Synthesis, modification and application of titanium dioxide nanoparticles: a review. NANOSCALE 2022; 14:6709-6734. [PMID: 35475489 DOI: 10.1039/d1nr08349j] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Titanium dioxide (TiO2) has been heavily investigated owing to its low cost, benign nature and strong photocatalytic ability. Thus, TiO2 has broad applications including photocatalysts, Li-ion batteries, solar cells, medical research and so on. However, the performance of TiO2 is not satisfactory due to many factors such as the broad band gap (3.01 to 3.2 eV) and fast recombination of electron-hole pairs (10-12 to 10-11 s). Plenty of work has been undertaken to improve the properties, such as structural and dopant modifications, which broaden the applications of TiO2. This review mainly discusses the aspects of TiO2-modified nanoparticles including synthetic methods, modifications and applications.
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Affiliation(s)
- Jinqi Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Zhiheng Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Wei Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Xiaoli Hu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Jixian Liu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Xuezhong Gong
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Wenli Miao
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Linliang Ding
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Xinbo Li
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
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20
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Li Q, Zhao J, Shang H, Ma Z, Cao H, Zhou Y, Li G, Zhang D, Li H. Singlet Oxygen and Mobile Hydroxyl Radicals Co-operating on Gas-Solid Catalytic Reaction Interfaces for Deeply Oxidizing NO x. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5830-5839. [PMID: 35404578 DOI: 10.1021/acs.est.2c00622] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Learning from the important role of porphyrin-based chromophores in natural photosynthesis, a bionic photocatalytic system based on tetrakis (4-carboxyphenyl) porphyrin-coupled TiO2 was designed for photo-induced treating low-concentration NOx indoor gas (550 parts per billion), achieving a high NO removal rate of 91% and a long stability under visible-light (λ ≥ 420 nm) irradiation. Besides the great contribution of the conventional •O2- reactive species, a synergic effect between a singlet oxygen (1O2) and mobile hydroxyl radicals (•OHf) was first illustrated for removing NOx indoor gas (1O2 + 2NO → 2NO2, NO2 + •OHf → HNO3), inhibiting the production of the byproducts of NO2. This work is helpful for understanding the surface mechanism of photocatalytic NOx oxidation and provides a new perspective for the development of highly efficient air purification systems.
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Affiliation(s)
- Qian Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Jingjing Zhao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Huan Shang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry,Central China Normal University, Wuhan 430079, P. R. China
| | - Zhong Ma
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Haiyan Cao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yue Zhou
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Guisheng Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Dieqing Zhang
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Hexing Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
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21
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Dong P, Dong F, Fiorenza R. Editorial: Photocatalysts for Air Purification: Design, Synthesis, and Mechanism Investigations. Front Chem 2022; 10:870550. [PMID: 35372258 PMCID: PMC8966393 DOI: 10.3389/fchem.2022.870550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 02/18/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Pengyu Dong
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, China
- *Correspondence: Pengyu Dong, ; Fan Dong, ; Roberto Fiorenza,
| | - Fan Dong
- Research Center for Environmental Science and Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
- *Correspondence: Pengyu Dong, ; Fan Dong, ; Roberto Fiorenza,
| | - Roberto Fiorenza
- Department of Chemical Sciences, University of Catania, Catania, Italy
- *Correspondence: Pengyu Dong, ; Fan Dong, ; Roberto Fiorenza,
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22
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Zhang X, Han L, Chen H, Wang S. Direct catalytic nitrogen oxide removal using thermal, electrical or solar energy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Zhou M, Ou H, Li S, Qin X, Fang Y, Lee S, Wang X, Ho W. Photocatalytic Air Purification Using Functional Polymeric Carbon Nitrides. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102376. [PMID: 34693667 PMCID: PMC8693081 DOI: 10.1002/advs.202102376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/20/2021] [Indexed: 05/19/2023]
Abstract
The techniques for the production of the environment have received attention because of the increasing air pollution, which results in a negative impact on the living environment of mankind. Over the decades, burgeoning interest in polymeric carbon nitride (PCN) based photocatalysts for heterogeneous catalysis of air pollutants has been witnessed, which is improved by harvesting visible light, layered/defective structures, functional groups, suitable/adjustable band positions, and existing Lewis basic sites. PCN-based photocatalytic air purification can reduce the negative impacts of the emission of air pollutants and convert the undesirable and harmful materials into value-added or nontoxic, or low-toxic chemicals. However, based on previous reports, the systematic summary and analysis of PCN-based photocatalysts in the catalytic elimination of air pollutants have not been reported. The research progress of functional PCN-based composite materials as photocatalysts for the removal of air pollutants is reviewed here. The working mechanisms of each enhancement modification are elucidated and discussed on structures (nanostructure, molecular structue, and composite) regarding their effects on light-absorption/utilization, reactant adsorption, intermediate/product desorption, charge kinetics, and reactive oxygen species production. Perspectives related to further challenges and directions as well as design strategies of PCN-based photocatalysts in the heterogeneous catalysis of air pollutants are also provided.
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Affiliation(s)
- Min Zhou
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
| | - Honghui Ou
- Department of ChemistryTsinghua UniversityBeijing100084P. R. China
| | - Shanrong Li
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Xing Qin
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
| | - Yuanxing Fang
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Shun‐cheng Lee
- Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong KongP. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Wingkei Ho
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
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24
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Indekeu A, Bailón-García E, Fernandes A, Baltazar R, Ferraria AM, do Rego AMB, Filipa Ribeiro M. Synthesis of modified TiO2-based catalysts for the photocatalytic production of solar fuels from synthesis gas. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Yang L, Yu Y, Yang W, Li X, Zhang G, Shen Y, Dong F, Sun Y. Efficient visible light photocatalytic NO abatement over SrSn(OH) 6 nanowires loaded with Ag/Ag 2O cocatalyst. ENVIRONMENTAL RESEARCH 2021; 201:111521. [PMID: 34214565 DOI: 10.1016/j.envres.2021.111521] [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: 03/31/2021] [Revised: 05/17/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
SrSn(OH)6 (SSOH) possesses a high oxidation potential in the valence band (VB), which is suitable for photocatalytic oxidation removal of pollutants. However, the electrons in the VB of these catalysts are difficult to transition to the conduction band (CB) under visible light, which makes it difficult to utilize sunlight effectively. In this work, Ag/Ag2O is loaded on the surface of SSOH nanowires, which stimulates the interfacial charge-transfer transition on SSOH. Compared with pure-phase SSOH, the NO abatement ratio of Ag/Ag2O-SSOH under visible light irradiation is increased to 45.10%. The e- in the VB of Ag2O are excited into the CB under visible light, and are further transferred to the Ag to react with O2 to produce superoxide radicals. The photo-excited e- in the VB of SSOH enter into the VB of Ag2O through interfacial charge-transfer transition to recombine with the photo-generated holes in the VB of Ag2O, thereby leaving photo-generated holes in the VB of SSOH. The holes in the VB of SSOH have sufficient oxidizing ability to oxidize the adsorbed hydroxyl groups into hydroxyl radicals. This work provides a new perspective for photocatalytic removal of pollutants by wide band gap photocatalyst under visible light.
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Affiliation(s)
- Lin Yang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Yangyang Yu
- Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou, 313001, China.
| | - Wenjia Yang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Xiaofang Li
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Guo Zhang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Yu Shen
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou, 313001, China; State Centre for International Cooperation on Designer Low Carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yanjuan Sun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou, 313001, China.
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26
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Cheng M, Xiao C, Xie Y. Shedding Light on the Role of Chemical Bond in Catalysis of Nitrogen Fixation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007891. [PMID: 34476865 DOI: 10.1002/adma.202007891] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 06/20/2021] [Indexed: 06/13/2023]
Abstract
Ammonia (NH3 ) and nitrates are essential for human society because of their widespread utilization for producing medicines, fibers, fertilizers, etc. In recent years, the development on nitrogen fixation under mild reaction conditions has attracted much attention. However, the very low conversion efficiency and ambiguous catalytic mechanism remain the major hurdles for the research of nitrogen fixation. This review aims to clarify the role of chemical bond in catalytic nitrogen fixation by summarizing and analyzing the recent development of nitrogen fixation research. In detail, the atomic-scale mechanism of nitrogen fixation reaction, the various methods to improve the nitrogen fixation performance, and the computational investigation of nitrogen fixation are discussed, all from a chemical bond perspective. It is hoped that this review could trigger more profound pondering and deeper exploration in the field of catalytic nitrogen fixation.
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Affiliation(s)
- Ming Cheng
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, iCHEM, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Chong Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, iCHEM, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, iCHEM, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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27
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X-ray-facilitated redox cycling of nanozyme possessing peroxidase-mimicking activity for reactive oxygen species-enhanced cancer therapy. Biomaterials 2021; 276:121023. [PMID: 34274779 DOI: 10.1016/j.biomaterials.2021.121023] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 01/18/2023]
Abstract
Nanomaterials with shifting or mixed redox states is one of the most common studied nanozyme with peroxidase-like activity for chemodynamic therapy (CDT), which can decompose hydrogen peroxide (H2O2) of tumor microenvironment into highly toxic reactive oxygen species (ROS) by a nano-catalytic way. However, most of them exhibit an insufficient catalytic efficiency due to their dependence on catalytic condition. Herein, a potential methodology is proposed to enhance their enzymatic activity by accelerating the redox cycling of these nanomaterials with shifting or mixed redox states in the presence of X-ray. In this study, the nanocomposite consisting of SnS2 nanoplates and Fe3O4 quantum dots with shifting or mixed redox states (Fe2+/Fe3+) is used to explore the strategy. Under external X-ray irradiation, SnS2 cofactor as electron donor can be triggered to transfer electrons to Fe3O4, which promotes the regeneration of Fe2+ sites on the surface of the Fe3O4. Consequently, the regenerated Fe2+ sites react with the overexpressed H2O2 to persistently generate ROS for enhanced tumor therapy. The designed nanocomposite displays the synergistic effects of radiotherapy and CDT. The strategy provides a new avenue for the development of artificial nanozymes with shifting or mixed redox states in precise cancer treatments based on X-ray-enhanced enzymatic efficacy.
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28
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Bo Y, Wang H, Lin Y, Yang T, Ye R, Li Y, Hu C, Du P, Hu Y, Liu Z, Long R, Gao C, Ye B, Song L, Wu X, Xiong Y. Altering Hydrogenation Pathways in Photocatalytic Nitrogen Fixation by Tuning Local Electronic Structure of Oxygen Vacancy with Dopant. Angew Chem Int Ed Engl 2021; 60:16085-16092. [PMID: 33963658 DOI: 10.1002/anie.202104001] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/27/2021] [Indexed: 01/06/2023]
Abstract
To avoid the energy-consuming step of direct N≡N bond cleavage, photocatalytic N2 fixation undergoing the associative pathways has been developed for mild-condition operation. However, it is a fundamental yet challenging task to gain comprehensive understanding on how the associative pathways (i.e., alternating vs. distal) are influenced and altered by the fine structure of catalysts, which eventually holds the key to significantly promote the practical implementation. Herein, we introduce Fe dopants into TiO2 nanofibers to stabilize oxygen vacancies and simultaneously tune their local electronic structure. The combination of in situ characterizations with first-principles simulations reveals that the modulation of local electronic structure by Fe dopants turns the hydrogenation of N2 from associative alternating pathway to associative distal pathway. This work provides fresh hints for rationally controlling the reaction pathways toward efficient photocatalytic nitrogen fixation.
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Affiliation(s)
- Yanan Bo
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China.,Institute of Energy, Hefei Comprehensive National Science Center, 350 Shushanhu Rd., Hefei, Anhui, 230031, China
| | - Haiyun Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yunxiang Lin
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Tian Yang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Run Ye
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yu Li
- Institute for New Energy Materials & Low-Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Canyu Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Pengye Du
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yangguang Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhi Liu
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201203, China
| | - Ran Long
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Chao Gao
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Bangjiao Ye
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Li Song
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, and, CAS Center for Excellence in Nanoscience Institution, University of Science and Technology of China, Hefei, Anhui, 230026, China.,Institute of Energy, Hefei Comprehensive National Science Center, 350 Shushanhu Rd., Hefei, Anhui, 230031, China
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29
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Bo Y, Wang H, Lin Y, Yang T, Ye R, Li Y, Hu C, Du P, Hu Y, Liu Z, Long R, Gao C, Ye B, Song L, Wu X, Xiong Y. Altering Hydrogenation Pathways in Photocatalytic Nitrogen Fixation by Tuning Local Electronic Structure of Oxygen Vacancy with Dopant. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yanan Bo
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
- Institute of Energy Hefei Comprehensive National Science Center 350 Shushanhu Rd. Hefei Anhui 230031 China
| | - Haiyun Wang
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Yunxiang Lin
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Tian Yang
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Run Ye
- State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei Anhui 230026 China
| | - Yu Li
- Institute for New Energy Materials & Low-Carbon Technologies Tianjin University of Technology Tianjin 300384 China
| | - Canyu Hu
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Pengye Du
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Yangguang Hu
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Zhi Liu
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
- School of Physical Science and Technology ShanghaiTech University Shanghai 201203 China
| | - Ran Long
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Chao Gao
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Bangjiao Ye
- State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei Anhui 230026 China
| | - Li Song
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory, and CAS Center for Excellence in Nanoscience Institution University of Science and Technology of China Hefei Anhui 230026 China
- Institute of Energy Hefei Comprehensive National Science Center 350 Shushanhu Rd. Hefei Anhui 230031 China
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30
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Abstract
NOx is a pervasive pollutant in urban environments. This review assesses the current state of the art of photocatalytic oxidation materials, designed for the abatement of nitrogen oxides (NOx) in the urban environment, and typically, but not exclusively based on titanium dioxide (TiO2). Field trials with existing commercial materials, such as paints, asphalt and concrete, in a range of environments including street canyons, car parks, tunnels, highways and open streets, are considered in-depth. Lab studies containing the most recent developments in the photocatalytic materials are also summarised, as well as studies investigating the impact of physical parameters on their efficiency. It is concluded that this technology may be useful as a part of the measures used to lower urban air pollution levels, yielding ∼2% NOx removal in the immediate area around the surface, for optimised TiO2, in some cases, but is not capable of the reported high NOx removal efficiencies >20% in outdoor urban environments, and can in some cases lower air quality by releasing hazardous by-products. However, research into new material is ongoing. The reason for the mixed results in the studies reviewed, and massive range of removal efficiencies reported (from negligible and up to >80%) is mainly the large range of testing practices used. Before deployment in individual environments site-specific testing should be performed, and new standards for lab and field testing should be developed. The longevity of the materials and their potential for producing hazardous by-products should also be considered.
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31
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Facile hydrothermal preparation of a ZnFe2O4/TiO2 heterojunction for NOx removal. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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32
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Chen S, Li B, Huang D, Xu P, Chen Y, Lei L, Wang Z, Deng R, Du L, Wang G. Jointed Synchronous Photocatalytic Oxidation and Chromate Reduction Enabled by the Defect Distribution upon BiVO 4: Mechanism Insight and Toxicity Assessment. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17586-17598. [PMID: 33847119 DOI: 10.1021/acsami.1c01998] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Exploring active and ecological materials for the restoration of complex pollution system is highly desired. This study presents a facile defect-tailoring strategy for combined pollutants purification with BiVO4 photocatalysis in which the jointed synchronous reaction of oxidation and reduction is integrated instead of the sequential reaction in two individual systems. XPS and EPR reveal that BiVO4 with a suitable oxygen vacancies (OVs) concentration and distribution exhibits superior photocatalytic activity under the coexistence of TC-HCl and Cr(VI) with Cr(VI) reduction efficiency increased by 71 times compared with the individual Cr(VI) system along with TC-HCl removal efficiency comparable to a single TC-HCl system. The mechanism of synchronous redox reactions mediated by surface OVs is revealed by comprehensive characterization together with reaction kinetic analysis, and the electronic band structure adjustment induced by the OVs variation is confirmed. Active species identification tests and intermediate product analysis confirm that singlet oxygen (1O2) accounts for the selective oxidation of TC-HCl, while electrons dominate the reduction of Cr(VI), under a coexistent environment. The influence of water quality parameters (e.g., pH, cations, anions, and organic substances) on the photocatalytic activity is investigated considering the complexity of the real aquatic environment. Importantly, toxicity assessment with Gram-negative strain E. coli as a model bacterium validates that the toxicity of the intermediates can be reduced to low or even ultralow levels. This work is dedicated to the mechanistic study of defect photocatalysis over BiVO4 and provides a jointed synchronous reaction system for combined pollutant purification.
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Affiliation(s)
- Sha Chen
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Bo Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Danlian Huang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Piao Xu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Yashi Chen
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Lei Lei
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Ziwei Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Rui Deng
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Li Du
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
| | - Guangfu Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China
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33
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Li P, Gao S, Liu Q, Ding P, Wu Y, Wang C, Yu S, Liu W, Wang Q, Chen S. Recent Progress of the Design and Engineering of Bismuth Oxyhalides for Photocatalytic Nitrogen Fixation. ADVANCED ENERGY AND SUSTAINABILITY RESEARCH 2021. [DOI: 10.1002/aesr.202000097] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Peishen Li
- Laboratory for Micro-sized Functional Materials College of Elementary Education Department of Chemistry Capital Normal University Beijing 100048 China
- Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) Key Laboratory of Water and Sediment Sciences (Ministry of Education) College of Environmental Sciences and Engineering Peking University Beijing 100871 China
| | - Shuai Gao
- Laboratory for Micro-sized Functional Materials College of Elementary Education Department of Chemistry Capital Normal University Beijing 100048 China
| | - Qiming Liu
- Department of Chemistry and Biochemistry University of California 1156 High Street Santa Cruz CA 95064 USA
| | - Peiren Ding
- Laboratory for Micro-sized Functional Materials College of Elementary Education Department of Chemistry Capital Normal University Beijing 100048 China
| | - Yunyun Wu
- Laboratory for Micro-sized Functional Materials College of Elementary Education Department of Chemistry Capital Normal University Beijing 100048 China
| | - Changzheng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environmental Remediation Beijing University of Civil Engineering and Architecture Beijing 100044 China
| | - Shaobin Yu
- Beijing Key Laboratory of Functional Materials for Building Structure and Environmental Remediation Beijing University of Civil Engineering and Architecture Beijing 100044 China
| | - Wen Liu
- Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) Key Laboratory of Water and Sediment Sciences (Ministry of Education) College of Environmental Sciences and Engineering Peking University Beijing 100871 China
| | - Qiang Wang
- Laboratory for Micro-sized Functional Materials College of Elementary Education Department of Chemistry Capital Normal University Beijing 100048 China
| | - Shaowei Chen
- Department of Chemistry and Biochemistry University of California 1156 High Street Santa Cruz CA 95064 USA
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34
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Wang X, Li X, Zhang G, Wang Z, Song XZ, Tan Z. Surface Structure Engineering of Nanosheet-Assembled NiFe 2O 4 Fluffy Flowers for Gas Sensing. NANOMATERIALS 2021; 11:nano11020297. [PMID: 33498856 PMCID: PMC7911288 DOI: 10.3390/nano11020297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 11/21/2022]
Abstract
In this work, we present a strategy to improve the gas-sensing performance of NiFe2O4 via a controllable annealing Ni/Fe precursor to fluffy NiFe2O4 nanosheet flowers. X-ray diffraction (XRD), a scanning electron microscope (SEM), nitrogen adsorption–desorption measurements and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure, morphology, specific surface area and surface structure. The gas-sensing performance was tested and the results demonstrate that the response was strongly influenced by the specific surface area and surface structure. The resultant NiFe2O4 nanosheet flowers with a heating rate of 8 °C min−1, which have a fluffier morphology and more oxygen vacancies in the surface, exhibited enhanced response and shortened response time toward ethanol. The easy approach facilitates the mass production of gas sensors based on bimetallic ferrites with high sensing performance via controlling the morphology and surface structure.
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Affiliation(s)
- Xiaofeng Wang
- Key Laboratory of Materials Modification by Laser Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, China; (X.W.); (X.L.); (G.Z.)
| | - Xu Li
- Key Laboratory of Materials Modification by Laser Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, China; (X.W.); (X.L.); (G.Z.)
| | - Guozheng Zhang
- Key Laboratory of Materials Modification by Laser Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, China; (X.W.); (X.L.); (G.Z.)
| | - Zihao Wang
- State Key Laboratory of Fine Chemicals, Panjin Campus, School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China;
| | - Xue-Zhi Song
- State Key Laboratory of Fine Chemicals, Panjin Campus, School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China;
- Correspondence: (X.-Z.S.); (Z.T.)
| | - Zhenquan Tan
- State Key Laboratory of Fine Chemicals, Panjin Campus, School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China;
- Correspondence: (X.-Z.S.); (Z.T.)
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35
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Zhang S, Si Y, Li B, Yang L, Dai W, Luo S. Atomic-Level and Modulated Interfaces of Photocatalyst Heterostructure Constructed by External Defect-Induced Strategy: A Critical Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2004980. [PMID: 33289948 DOI: 10.1002/smll.202004980] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Despite the existence of numerous photocatalyst heterostructures, their separation efficiency and charge flow precision remain low due to the poor study on interfacial properties. The photocatalysts with confined defects can effectively control the photogenerated carrier migration, but the metastability of such defects considerably decreases the photocatalyst stability. Meanwhile, the introduction of defective region can increase the coordinative unsaturation and delocalize local electrons to promote their interactions with the molecules/ions in that region. The selective growth of modulated heterogeneous interface by defect-induced strategy may not only increase the stability of defective structures, but also enhance the migration of interfacial charges. Using this method, photocatalytic heterostructures with low contact resistances and intimate interfaces are constructed to achieve the optimal charge migration in terms of efficiency and accuracy. In this work, the point, linear, and planar heterogeneous interfaces and related defect engineering techniques are discussed. Particularly, it is focused on the external, defect-induced interfacial heterogeneities with various spatial and dimensional configurations, which exhibit modulated and controllable interfacial properties. Furthermore, the main aspects of fabricating photocatalyst heterostructures by the defect-induced strategy, including the i) controllable generation of defects, ii) advanced characterization methods, and iii) elaborate construction of the minimal interface, are described.
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Affiliation(s)
- Shuqu Zhang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
| | - Yanmei Si
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
| | - Bing Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
| | - Lixia Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
| | - Weili Dai
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
| | - Shenglian Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi Province, 330063, P. R. China
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36
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Li H, Ai Z, Zhang L. Surface structure-dependent photocatalytic O 2 activation for pollutant removal with bismuth oxyhalides. Chem Commun (Camb) 2020; 56:15282-15296. [PMID: 33165493 DOI: 10.1039/d0cc05449f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The purification of water and air by semiconductor photocatalysis is a rapidly growing area for academic research and industrial innovation, featured with ambient removal of organic or inorganic pollutants by using solar light as the energy source and atmospheric O2 as the green oxidant. Both charge transfer and energy transfer from excited photocatalysts can overcome the spin-forbidden nature of O2. Layered bismuth oxyhalides are a new group of two-dimensional photocatalysts with an appealing geometric and surface structure that allows the dynamic and selective tuning of O2 activation at the surface molecular level. In this Feature Article, we specifically summarize our recent progress in selective O2 activation by engineering surface structures of bismuth oxyhalides. Then, we demonstrate selective photocatalytic O2 activation of bismuth oxyhalides for environmental control, including water decontamination, volatile organic compound oxidation and nitrogen oxide removal, as well as selective catalytic oxidations. Challenges and opportunities regarding the design of photocatalysts with satisfactory performance for potential environmental control applications are also presented.
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Affiliation(s)
- Hao Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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37
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Meng F, Guo L, Zou H, Zhu B, Zhou F, Zeng Y, Han J, Yang J, Zhang S, Zhong Q. Mechanism study on TiO 2 inducing O 2- and OH radicals in O 3/H 2O 2 system for high-efficiency NO oxidation. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123033. [PMID: 32544767 DOI: 10.1016/j.jhazmat.2020.123033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/11/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
To achieve high NO oxidation efficiency, excessive O3 must be used, which would lead to the high cost and escape of ozone. Herein, we adopted low cost and environmental-friendly TiO2 as the catalyst of low concentration O3 and H2O2 system for high-efficiency NOx oxidation. The Ti sites on TiO2 were the deprotonation sites of H2O2 and H2O into Ti-OOH and Ti-OH species, respectively. We found that the surface of rutile phase TiO2 had a low concentration Ti-OOH component but a large amount of Ti-OH after contacting with H2O2 solution, thus lots of ·OH and a few O2- radicals formed with introducing O3 molecules. H2O2 solution induced the formation of a large amount of Ti-OOH and Ti-OH species on the anatase phase TiO2 surface, thus lots of O2- generated in the O3/H2O2 system. O2- and OH radicals could efficiently oxidize NO, in which O2- radicals could oxidize NO to NO3- in one step with high selectively. Therefore, anatase TiO2 had better performance in NOx oxidation than rutile phase TiO2. The effect of temperature and SO2 concentration on NO oxidation was also investigated, the results showed that TiO2-A/O3/H2O2 system promoted NO oxidation at a low temperature and a low concentration of SO2.
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Affiliation(s)
- Fanyu Meng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Lina Guo
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243000, PR China
| | - Haocheng Zou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Boming Zhu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Fayang Zhou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Yiqing Zeng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Jiayou Han
- Shanghai Meishan Steel Corporation Ltd., Nanjing, 210039, PR China
| | - Jun Yang
- Shanghai Meishan Steel Corporation Ltd., Nanjing, 210039, PR China
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
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38
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Yang J, Bai H, Guo Y, Zhang H, Jiang R, Yang B, Wang J, Yu JC. Photodriven Disproportionation of Nitrogen and Its Change to Reductive Nitrogen Photofixation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010192] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jianhua Yang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Haoyuan Bai
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Yanzhen Guo
- Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional Materials Huanghe Science and Technology College Zhengzhou 450006 China
| | - Han Zhang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Ruibin Jiang
- Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China
| | - Baocheng Yang
- Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional Materials Huanghe Science and Technology College Zhengzhou 450006 China
| | - Jianfang Wang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Jimmy C. Yu
- Department of Chemistry The Chinese University of Hong Kong Shatin, Hong Kong SAR China
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39
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Yang J, Bai H, Guo Y, Zhang H, Jiang R, Yang B, Wang J, Yu JC. Photodriven Disproportionation of Nitrogen and Its Change to Reductive Nitrogen Photofixation. Angew Chem Int Ed Engl 2020; 60:927-936. [DOI: 10.1002/anie.202010192] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/07/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Jianhua Yang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Haoyuan Bai
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Yanzhen Guo
- Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional Materials Huanghe Science and Technology College Zhengzhou 450006 China
| | - Han Zhang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Ruibin Jiang
- Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China
| | - Baocheng Yang
- Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional Materials Huanghe Science and Technology College Zhengzhou 450006 China
| | - Jianfang Wang
- Department of Physics The Chinese University of Hong Kong Shatin, Hong Kong SAR China
| | - Jimmy C. Yu
- Department of Chemistry The Chinese University of Hong Kong Shatin, Hong Kong SAR China
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40
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Marć M, Najder-Kozdrowska L, Guskos N, Żołnierkiewicz G, Montero AM, Dudek MR. The Use of Ultra-Small Fe 3O 4 Magnetic Nanoparticles for Hydrothermal Synthesis of Fe 3+-Doped Titanate Nanotubes. MATERIALS 2020; 13:ma13204612. [PMID: 33081202 PMCID: PMC7602792 DOI: 10.3390/ma13204612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/25/2020] [Accepted: 10/12/2020] [Indexed: 11/16/2022]
Abstract
A method of the hydrothermal synthesis of Fe3+-doped titanate nanotubes (TNT) is reported in which the ultra-small Fe3O4 nanoparticles are used as the sources of Fe3+ ions. The magnetic nanoparticles with a diameter of about 2 nm are added during the washing stage of the hydrothermal procedure. During washing, they gradually degrade and at the same time, the titanate product is transformed into nanotubes. The obtained nanotubes were characterized by structural and magnetic measurements. It was found that, depending on the value of the external magnetic field, they may show the property of room temperature ferromagnetism, paramagnetism or they may be diamagnetic. It was also shown that the modified TNTs have greater photocatalytic activity compared to unmodified TNTs.
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Affiliation(s)
- Maciej Marć
- Institute of Physics, University of Zielona Góra, ul. Szafrana 4a, 65-069 Zielona Góra, Poland; (L.N.-K.); (M.R.D.)
- Correspondence:
| | - Lidia Najder-Kozdrowska
- Institute of Physics, University of Zielona Góra, ul. Szafrana 4a, 65-069 Zielona Góra, Poland; (L.N.-K.); (M.R.D.)
| | - Nikos Guskos
- Institute of Physics, West Pomeranian University of Technology, Al. Piastów 17, 70-310 Szczecin, Poland; (N.G.); (G.Ż.)
| | - Grzegorz Żołnierkiewicz
- Institute of Physics, West Pomeranian University of Technology, Al. Piastów 17, 70-310 Szczecin, Poland; (N.G.); (G.Ż.)
| | - Ana Maria Montero
- Aachen Institute for Advanced Study in Computational Engineering Science, RWTH, 52062 Aachen, Germany;
| | - Mirosław Roman Dudek
- Institute of Physics, University of Zielona Góra, ul. Szafrana 4a, 65-069 Zielona Góra, Poland; (L.N.-K.); (M.R.D.)
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41
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Wang S, Xiong Z, Yang N, Ding X, Chen H. Iodine-doping-assisted tunable introduction of oxygen vacancies on bismuth tungstate photocatalysts for highly efficient molecular oxygen activation and pentachlorophenol mineralization. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63506-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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42
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Murakami Y, Kamegawa T, Kobori Y, Tachikawa T. TiO 2 superstructures with oriented nanospaces: a strategy for efficient and selective photocatalysis. NANOSCALE 2020; 12:6420-6428. [PMID: 32141460 DOI: 10.1039/c9nr10435f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Highly ordered superstructures of semiconductor nanocrystals contain abundant nanometer-scale pores between the crystals; however, there have been difficulties in controlling the size and orientation of these nanospaces without the use of a template or a capping reagent. This constraint has affected their development and applications in potential fields including catalysis and optoelectronics adversely. In this study, we synthesized a rod-shaped TiO2 mesocrystal (TMC) having a length of a few hundreds of micrometers and comprising regularly ordered anatase TiO2 nanocrystals that form oriented nanospaces by exposed {001} facets. Finite-difference time-domain (FDTD) calculations of electric fields and in situ fluorescence imaging with a polarization sensitive dye on a single mesocrystal were performed to reveal anisotropic adsorption and excitation of the dyes. Furthermore, the photodegradation of the dyes was found to be more facilitated in nanospaces formed by the specific facets, as compared with the dyes randomly adsorbed on the outer surfaces. Consequently, the selectivity of photocatalytic reactions based on the molecular size and redox was enhanced by introducing the concept of oriented nanospace.
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Affiliation(s)
- Yuta Murakami
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.
| | - Takashi Kamegawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
| | - Yasuhiro Kobori
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan. and Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Takashi Tachikawa
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan. and Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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43
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Xiao M, Zhang L, Luo B, Lyu M, Wang Z, Huang H, Wang S, Du A, Wang L. Molten‐Salt‐Mediated Synthesis of an Atomic Nickel Co‐catalyst on TiO
2
for Improved Photocatalytic H
2
Evolution. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001148] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mu Xiao
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Lei Zhang
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Zhiliang Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Hengming Huang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Aijun Du
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
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44
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Xiao M, Zhang L, Luo B, Lyu M, Wang Z, Huang H, Wang S, Du A, Wang L. Molten‐Salt‐Mediated Synthesis of an Atomic Nickel Co‐catalyst on TiO
2
for Improved Photocatalytic H
2
Evolution. Angew Chem Int Ed Engl 2020; 59:7230-7234. [DOI: 10.1002/anie.202001148] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Mu Xiao
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Lei Zhang
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Zhiliang Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Hengming Huang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
| | - Aijun Du
- School of Chemistry, Physics and Mechanical Engineering Science and Engineering Faculty Queensland University of Technology Brisbane City QLD 4000 Australia
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia QLD 4072 Australia
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45
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Yuan C, Cui W, Sun Y, Wang J, Chen R, Zhang J, Zhang Y, Dong F. Inhibition of the toxic byproduct during photocatalytic NO oxidation via La doping in ZnO. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.09.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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46
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Wu P, Zhao X, Li C, Yang M, Li G, Zhang S, Ming J, Liu M, Qian Z, Fang P. One-pot synthesis of Fe 2O 3/Y 2O 3@TNS for enhanced photocatalytic and adsorption properties. NEW J CHEM 2020. [DOI: 10.1039/d0nj01925a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TiO2-based nanosheets (TNS) modified with Fe2O3 and Y2O3 particles (Fe2O3/Y2O3@TNS), possessing a laminar structure with large specific surface area of 382 m2 g−1, were synthesized via a one-pot hydrothermal method.
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Affiliation(s)
- Pei Wu
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Xiaona Zhao
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Chunhe Li
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Minchen Yang
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Guojun Li
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Siyi Zhang
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
| | - Julan Ming
- State Grid Zhejiang Electric Power Research Institute
- Hangzhou
- China
| | - Min Liu
- State Grid Zhejiang Electric Power Research Institute
- Hangzhou
- China
| | - Zhouhai Qian
- State Grid Zhejiang Electric Power Research Institute
- Hangzhou
- China
| | - Pengfei Fang
- Department of Physics and Hubei Nuclear Solid Physics Key Laboratory
- Wuhan University
- Wuhan 430072
- China
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47
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Zheng Y, Cao L, Xing G, Huang J, Zhang Z. Mg0.8Zn0.2O microspheres: preparation, characterization and application for degrading organic dyes. CrystEngComm 2020. [DOI: 10.1039/c9ce01717h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic degradation of organic pollutants in wastewater is one of the most promising strategies for environmental remediation, and photocatalysts as the prerequisite have received considerable attention.
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Affiliation(s)
- Yajun Zheng
- School of Chemistry and Chemical Engineering
- Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Liyun Cao
- School of Material Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Gaoxuan Xing
- School of Chemistry and Chemical Engineering
- Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Jianfeng Huang
- School of Material Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering
- Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields
- Xi'an Shiyou University
- Xi'an 710065
- China
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48
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Chang S, Xu X. Au nanocrystals decorated TiO2 nanotubes for photocatalytic nitrogen fixation into ammonia. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01287g] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nitrogen photofixation has been successfully performed on TiO2 nanotubes decorated with Au nanocrystals which clearly outperform commercial P25 under the same conditions.
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Affiliation(s)
- Shufang Chang
- Shanghai Key Lab of Chemical Assessment and Sustainability
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
| | - Xiaoxiang Xu
- Shanghai Key Lab of Chemical Assessment and Sustainability
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- China
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49
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Zhang F, Li YH, Li JY, Tang ZR, Xu YJ. 3D graphene-based gel photocatalysts for environmental pollutants degradation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 253:365-376. [PMID: 31325881 DOI: 10.1016/j.envpol.2019.06.089] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/20/2019] [Accepted: 06/22/2019] [Indexed: 05/23/2023]
Abstract
Enormous research interest is devoted to fabricating three-dimensional graphene-based gels (3D GBGs) toward improved conversion of solar energy by virtue of the intrinsic properties of single graphene and 3D porous structure characteristics. Here, this concise minireview is primarily focused on the recent progress on applications of 3D GBGs, including aerogels and hydrogels, in photocatalytic degradation of pollutants from water and air, such as organic pollutants, heavy metal ions, bacteria and gaseous pollutants. In particular, the preponderances of 3D GBG photocatalysts for environmental pollutants degradation have been elaborated. Furthermore, in addition to discussing opportunities offered by 3D GBG composite photocatalysts, we also describe the existing problems and the future direction of 3D GBG materials in this burgeoning research area. It is hoped that this review could spur multidisciplinary research interest for advancing the rational utilization of 3D GBGs for practical applications in environmental remediation.
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Affiliation(s)
- Fan Zhang
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China
| | - Yue-Hua Li
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Jing-Yu Li
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
| | - Zi-Rong Tang
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China.
| | - Yi-Jun Xu
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China
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50
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Single-molecule and -particle probing crystal edge/corner as highly efficient photocatalytic sites on a single TiO 2 particle. Proc Natl Acad Sci U S A 2019; 116:18827-18833. [PMID: 31484775 DOI: 10.1073/pnas.1907122116] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The exposed active sites of semiconductor catalysts are essential to the photocatalytic energy conversion efficiency. However, it is difficult to directly observe such active sites and understand the photogenerated electron/hole pairs' dynamics on a single catalyst particle. Here, we applied a quasi-total internal reflection fluorescence microscopy and laser-scanning confocal microscopy to identify the photocatalytic active sites at a single-molecule level and visualized the photogenerated hole-electron pair dynamics on a single TiO2 particle, the most widely used photocatalyst. The experimental results and density functional theory calculations reveal that holes and electrons tend to reach and react at the same surface sites, i.e., crystal edge/corner, within a single anatase TiO2 particle owing to the highly exposed (001) and (101) facets. The observation provides solid proof for the existence of the surface junction "edge or corner" on single TiO2 particles. These findings also offer insights into the nature of the photocatalytic active sites and imply an activity-based strategy for rationally engineering catalysts for improved photocatalysis, which can be also applied for other catalytic materials.
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