1
|
Zhao W, Li Y, Shen W. Tuning the shape and crystal phase of TiO 2 nanoparticles for catalysis. Chem Commun (Camb) 2021; 57:6838-6850. [PMID: 34137748 DOI: 10.1039/d1cc01523k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Synthesis of TiO2 nanoparticles with tunable shape and crystal phase has attracted considerable attention for the design of highly efficient heterogeneous catalysts. Tailoring the shape of TiO2, in the crystal phases of anatase, rutile, brookite and TiO2(B), allows tuning of the atomic configurations on the dominantly exposed facets for maximizing the active sites and regulating the reaction route towards a specific channel for achieving high selectivity. Moreover, the shape and crystal phase of TiO2 nanoparticles alter their interactions with metal species, which are commonly termed as strong metal-support interactions involving interfacial strain and charge transfer. On the other hand, metal particles, clusters and single atoms interact differently with TiO2, because of the variation of the electronic structure, while the surface of TiO2 determines the interfacial bonding via a geometric effect. The dynamic behavior of the metal-titania interfaces, driven by the chemisorption of the reactive molecules at elevated temperatures, also plays a decisive role in elaborating the structure-reactivity relationship.
Collapse
Affiliation(s)
- Wenning Zhao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| |
Collapse
|
2
|
Ballestas-Barrientos A, Murdock AT, Liu H, Masters A, Maschmeyer T. Understanding the link between solid/liquid interfaces and photoelectrochemical activity in novel thin-film photoanodes of preferentially oriented high-index rutile TiO2 facets – A work inspired by Michel Che’s research on surface chemistry. J Catal 2020. [DOI: 10.1016/j.jcat.2020.09.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
3
|
Zhou Z, Zhang X, Zhang T, Ma W, Fang X. UV-activated peroxymonosulfate for haloacetamides degradation: Kinetics and reaction pathways. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1842756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Zhen Zhou
- State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing Special Engineering Design and Research Institute, Beijing, China
| | | | - Tong Zhang
- State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing Special Engineering Design and Research Institute, Beijing, China
| | - Wen Ma
- State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing Special Engineering Design and Research Institute, Beijing, China
| | - Xiaojun Fang
- State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing Special Engineering Design and Research Institute, Beijing, China
| |
Collapse
|
4
|
Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis. SURFACES 2020. [DOI: 10.3390/surfaces3010008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Surface chemistry plays a major role in photocatalytic and photoelectrochemical processes taking place with the participation of TiO2. The synthesis methods, surface characterizations, theoretical research methods, and hardware over the last decade generated opportunities for progress in the surface science of this photocatalyst. Very recently, attention was paid to the design of photocatalysts at the nanoscale level by adjusting the types of exposed surfaces and their ratio, the composition and the surface structure of nanoparticles, and that of individual surfaces. The current theoretical methods provide highly detailed designs that can be embodied experimentally. The present review article describes the progress in the surface science of TiO2 and TiO2-based photocatalysts obtained over the last three years. Such aspects including the properties of macro- and nano-scale surfaces, noble-metal-loaded surfaces, doping with Mg and S, intrinsic defects (oxygen vacancies), adsorption, and photoreactions are considered. The main focus of the article is on the anatase phase of TiO2.
Collapse
|
5
|
Yu Y, Zhou Z, Ding Z, Zuo M, Cheng J, Jing C. Simultaneous arsenic and fluoride removal using {201}TiO 2-ZrO 2: Fabrication, characterization, and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:267-273. [PMID: 31173975 DOI: 10.1016/j.jhazmat.2019.05.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 05/05/2023]
Abstract
The coexistence of arsenic (As) and fluoride (F) in drinking water is an urgent environmental issue that causes increasing public concerns. The need for effective simultaneous removal of As and F has motived great research efforts. Herein, a novel {201}TiO2-ZrO2 composite was synthesized and its application mechanism was explored. Batch adsorption experiments show that the As(III), As(V), and F adsorption followed the pseudo-second-order kinetics with the Langmuir adsorption capacity at 58.5, 21.6, and 13.1 mg/g, respectively. EXAFS and in situ ATR-FTIR results suggested that TiO2 surface sites were occupied by As(III) and As(V) in bidentate binuclear structures, and ZrO2 sites preferentially adsorbed As(III) and F in monodentate mononuclear configurations. This molecular structure obtained in the mono-adsorption system was integrated with the charge distribution multisite surface complexation model to accurately predict the As and F co-existing adsorption behaviors. The results in competitive adsorption, regeneration, and application evidenced that the {201}TiO2-ZrO2 composite is a promising adsorbent for simultaneous As and F removal.
Collapse
Affiliation(s)
- Yaqin Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen Zhou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Military Facilities, Army Logistics University, Chongqing 401311, China
| | - Zhaoxia Ding
- Department of Military Facilities, Army Logistics University, Chongqing 401311, China
| | - Meimei Zuo
- Department of Military Facilities, Army Logistics University, Chongqing 401311, China
| | - Jiemin Cheng
- University of Geographic and Environment, Shandong Normal University, Jinan, Shandong 250014, China.
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
6
|
Sun S, Zhang X, Cui J, Yang Q, Liang S. High-index faceted metal oxide micro-/nanostructures: a review on their characterization, synthesis and applications. NANOSCALE 2019; 11:15739-15762. [PMID: 31433431 DOI: 10.1039/c9nr05107d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exposed high-index facets with a high density of low-coordinated atoms (including edges, steps and kinks) can provide more high-active sites for chemical reactions. Therefore, great progress has made in the facet-dependent application of various high-index faceted micro-/nanostructures in the past decades. Previous review papers have mainly highlighted the advances in high-index faceted noble metal nanocrystals. However, to date, there is no specialized review paper on high-index faceted metal oxides and their facet-dependent applications. Thus, in this review, the existing high-index faceted metal oxide micro-/nanostructures, including Cu2O, TiO2, Fe2O3, ZnO, SnO2 and BiVO4, are reviewed based on their characterization, synthesis engineering and facet-dependent applications in the fields of catalysis, sensors, lithium-ion batteries and carbon monoxide oxidation. Also, several challenges and perspectives are presented. Hopefully, this review article will be a useful guideline and resource for researchers currently concentrating on high-index faceted metal oxides to design and synthesize novel micro-/nanostructures for overcoming the practical environment-, biology- and energy-related problems.
Collapse
Affiliation(s)
- Shaodong Sun
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, People's Republic of China.
| | | | | | | | | |
Collapse
|
7
|
Wang JC, Lou HH, Xu ZH, Cui CX, Li ZJ, Jiang K, Zhang YP, Qu LB, Shi W. Natural sunlight driven highly efficient photocatalysis for simultaneous degradation of rhodamine B and methyl orange using I/C codoped TiO 2 photocatalyst. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:356-363. [PMID: 30130694 DOI: 10.1016/j.jhazmat.2018.08.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/20/2018] [Accepted: 08/04/2018] [Indexed: 05/25/2023]
Abstract
Increasing the efficiency of dye degradation is a critical issue for the application for photocatalysis. It is one of the greatest challenges to enhance the utilization of photo generated carriers in semiconductor, especially for sunlight irradiation. In this study, I/C-codoped TiO2 was synthesized by a simple solvothermal-calcination method. The codoping interstitial carbon and substitutional iodine not only widened the light absorption range of the TiO2 photocatalysts, but also enhanced the separation of photo-induced carriers. The photocatalytic activities of RhB and MO degradation over the 4-I/C-TiO2 photocatalyst could reach 98.2% and 94.2% after 25 min visible light irradiation (λ ≥ 400 nm), respectively. Notably, 4-I/C-TiO2 showed good activity for MO and RhB mixed degradation and could also accomplish the photocatalytic degradation in the above mixed system under natural sunlight irradiation. According to the dark catalytic experiment, I/C-codoping could effectively accelerate the formation of hydroxyl radicals from the generated H2O2, which was formed for the enhanced photocatalytic activity of dye degradation. The gained knowledge may provide some insights into the photocatalytic degradation over the codoped TiO2 catalyst.
Collapse
Affiliation(s)
- Ji-Chao Wang
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China; Post-doctoral Station of Environmental Science and Engineering, Henan Normal University, Xinxiang 453000, China.
| | - Hui-Hui Lou
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China
| | - Zhi-Hua Xu
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China
| | - Cheng-Xing Cui
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China
| | - Zhong-Jun Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, China
| | - Kai Jiang
- Post-doctoral Station of Environmental Science and Engineering, Henan Normal University, Xinxiang 453000, China
| | - Yu-Ping Zhang
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453000, China.
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, China
| | - Weina Shi
- College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China.
| |
Collapse
|