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Feng G, Hu M, Yuan S, Nan J, Zeng H. Hydrogenated Amorphous TiO 2-x and Its High Visible Light Photoactivity. NANOMATERIALS 2021; 11:nano11112801. [PMID: 34835567 PMCID: PMC8625909 DOI: 10.3390/nano11112801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/09/2021] [Accepted: 10/15/2021] [Indexed: 12/02/2022]
Abstract
Hydrogenated crystalline TiO2 with oxygen vacancy (OV) defect has been broadly investigated in recent years. Different from crystalline TiO2, hydrogenated amorphous TiO2−x for advanced photocatalytic applications is scarcely reported. In this work, we prepared hydrogenated amorphous TiO2−x (HA-TiO2−x) using a unique liquid plasma hydrogenation strategy, and demonstrated its highly visible-light photoactivity. Density functional theory combined with comprehensive analyses was to gain fundamental understanding of the correlation among the OV concentration, electronic band structure, photon capturing, reactive oxygen species (ROS) generation, and photocatalytic activity. One important finding was that the narrower the bandgap HA-TiO2−x possessed, the higher photocatalytic efficiency it exhibited. Given the narrow bandgap and extraordinary visible-light absorption, HA-TiO2−x showed excellent visible-light photodegradation in rhodamine B (98.7%), methylene blue (99.85%), and theophylline (99.87) within two hours, as well as long-term stability. The total organic carbon (TOC) removal rates of rhodamine B, methylene blue, and theophylline were measured to 55%, 61.8%, and 50.7%, respectively, which indicated that HA-TiO2−x exhibited high wastewater purification performance. This study provided a direct and effective hydrogenation method to produce reduced amorphous TiO2−x which has great potential in practical environmental remediation.
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Affiliation(s)
- Guang Feng
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (G.F.); (M.H.); (S.Y.)
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China
| | - Mengyun Hu
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (G.F.); (M.H.); (S.Y.)
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
| | - Shuai Yuan
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (G.F.); (M.H.); (S.Y.)
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China
| | - Junyi Nan
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
| | - Heping Zeng
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (G.F.); (M.H.); (S.Y.)
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
- CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai 201800, China
- Jinan Institute of Quantum Technology, Jinan 250101, China
- Correspondence:
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Zhang S, Duan S, Chen G, Meng S, Zheng X, Fan Y, Fu X, Chen S. MoS2/Zn3In2S6 composite photocatalysts for enhancement of visible light-driven hydrogen production from formic acid. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63584-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tang K, Wang L, Geng H, Qiu J, Cao H, Liu X. Molybdenum disulfide (MoS2) nanosheets vertically coated on titanium for disinfection in the dark. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.12.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Jayaraman T, Murthy AP, Elakkiya V, Chandrasekaran S, Nithyadharseni P, Khan Z, Senthil RA, Shanker R, Raghavender M, Kuppusami P, Jagannathan M, Ashokkumar M. Recent development on carbon based heterostructures for their applications in energy and environment: A review. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.02.029] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Theerthagiri J, Senthil R, Senthilkumar B, Reddy Polu A, Madhavan J, Ashokkumar M. Recent advances in MoS 2 nanostructured materials for energy and environmental applications – A review. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.04.041] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Li H, Xie F, Li W, Fahlman BD, Chen M, Li W. Preparation and adsorption capacity of porous MoS2nanosheets. RSC Adv 2016. [DOI: 10.1039/c6ra22414h] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
MoS2nanosheets with higher adsorption capacity for dyes.
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Affiliation(s)
- He Li
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- PR China
| | - Fei Xie
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- PR China
| | - Wei Li
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- PR China
| | - Bradley D. Fahlman
- Department of Chemistry & Biochemistry
- Science of Advanced Materials Program
- Central Michigan University
- Mt. Pleasant
- USA
| | - Minfang Chen
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- PR China
| | - Wenjiang Li
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- PR China
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