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Ghasemian MB, Zavabeti A, Mousavi M, Murdoch BJ, Christofferson AJ, Meftahi N, Tang J, Han J, Jalili R, Allioux FM, Mayyas M, Chen Z, Elbourne A, McConville CF, Russo SP, Ringer S, Kalantar-Zadeh K. Doping Process of 2D Materials Based on the Selective Migration of Dopants to the Interface of Liquid Metals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2104793. [PMID: 34510605 DOI: 10.1002/adma.202104793] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/23/2021] [Indexed: 06/13/2023]
Abstract
The introduction of trace impurities within the doping processes of semiconductors is still a technological challenge for the electronics industries. By taking advantage of the selective enrichment of liquid metal interfaces, and harvesting the doped metal oxide semiconductor layers, the complexity of the process can be mitigated and a high degree of control over the outcomes can be achieved. Here, a mechanism of natural filtering for the preparation of doped 2D semiconducting sheets based on the different migration tendencies of metallic elements in the bulk competing for enriching the interfaces is proposed. As a model, liquid metal alloys with different weight ratios of Sn and Bi in the bulk are employed for harvesting Bi2 O3 -doped SnO nanosheets. In this model, Sn shows a much stronger tendency than Bi to occupy surface sites of the Bi-Sn alloys, even at the very high concentrations of Bi in the bulk. This provides the opportunity for creating SnO 2D sheets with tightly controlled Bi2 O3 dopants. By way of example, it is demonstrated how such nanosheets could be made selective to both reducing and oxidizing environmental gases. The process demonstrated here offers significant opportunities for future synthesis and fabrication processes in the electronics industries.
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Affiliation(s)
- Mohammad B Ghasemian
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Ali Zavabeti
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Maedehsadat Mousavi
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Billy J Murdoch
- RMIT Microscopy and Microanalysis Facility, STEM College, RMIT University, Melbourne, Victoria, 3001, Australia
| | | | - Nastaran Meftahi
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Jianbo Tang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jialuo Han
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Rouhollah Jalili
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Francois-Marie Allioux
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Mohannad Mayyas
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Zibin Chen
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Aaron Elbourne
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Chris F McConville
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3216, Australia
| | - Salvy P Russo
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Simon Ringer
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Kourosh Kalantar-Zadeh
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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Karpuraranjith M, Chen Y, Rajaboopathi S, Ramadoss M, Srinivas K, Yang D, Wang B. Three-dimensional porous MoS 2 nanobox embedded g-C 3N 4@TiO 2 architecture for highly efficient photocatalytic degradation of organic pollutant. J Colloid Interface Sci 2021; 605:613-623. [PMID: 34343734 DOI: 10.1016/j.jcis.2021.07.133] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/18/2021] [Accepted: 07/25/2021] [Indexed: 01/11/2023]
Abstract
Herein, a simple, highly efficient and stable MoS2 nanobox embedded graphitic-C3N4@TiO2 (g-CN@TiO2) nanoarchitecture was synthesized by a facile solvothermal approach. The nano-hybrid photocatalyst was constructed by TiO2 nanoparticles anchored on the surface of g-CN nanosheets. Then highly crystalline three-dimensional porous MoS2 nanobox was homogeneously distributed on the g-CN@TiO2 surface. The g-CN@TiO2/MoS2 hybrid achieved a high photocatalytic degradation efficiency of 97.5% for methylene blue (MB) dye pollutant under visible-light irradiant in an hour which was much better than TiO2@MoS2, g-CN@TiO2, MoS2, TiO2 and g-CN. Furthermore, the reaction rate (k) value of g-CN@TiO2/MoS2 for MB dye is as high as 3.18 X 10-2 min-1, which is ~ 2.65 times better than those of g-CN@TiO2 and MoS2. This work presents a rational structure design, interfacial construction and suitable band gap strategy to synthesize advanced nano-hybrid photocatalyst for degradation of organic pollutant with excellent performance and long-term stability.
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Affiliation(s)
- Marimuthu Karpuraranjith
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Yuanfu Chen
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China; College of Science and Institute of Oxygen Supply, Tibet University, Lhasa 850000, PR China.
| | - Sivamoorthy Rajaboopathi
- Department of Chemistry, Government Arts College for Women, Sivagangai 630561, Tamil Nadu, India
| | - Manigandan Ramadoss
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Katam Srinivas
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Dongxu Yang
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Bin Wang
- School of Electronic Science and Technology, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China
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Zhang Y, Yu H, Li S, Wang L, Huang F, Guan R, Li J, Jiao Y, Sun J. Rapidly degradation of di-(2-ethylhexyl) phthalate by Z-scheme Bi 2O 3/TiO 2@reduced graphene oxide driven by simulated solar radiation. CHEMOSPHERE 2021; 272:129631. [PMID: 33485039 DOI: 10.1016/j.chemosphere.2021.129631] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/01/2021] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is a priority environmental pollutant with carcinogenic, teratogenic, and mutagenic toxicity. Because it is widely used and ubiquitous in water, it is urgent to use a non-toxic, fast, and non-temperature dependent photocatalyst for degradation. Herein, a Z-scheme heterojunction composite catalyst consisting of Bi2O3 and TiO2 with reduced graphene oxide (rGO) as a two-dimensional template was designed and characterized. Under simulated solar radiation, the catalyst doped with 4% rGO presented the best photocatalytic DEHP (10 mg L-1) degradation at pH = 6, reaching 89% conversion in 90 min, and the degradation rate was 2.05 times higher than unmodified materials. The successful preparation of the Z-scheme junction enhanced the utilization of visible light region, thereby improving the DEHP's photocatalytic degradation performance. Subsequently, density functional theory (DFT) combined with GC-MS metabolite detection to propose a complete DEHP photocatalytic degradation mechanism. ·O2- and ·OH were detected as the primary reactive oxygen radicals involved in DEHP degradation, which easily attacked the O11 site with a high Fukui index (f0) through de-esterification, β-oxidation, and hydroxylation. While satisfying the rapid degradation, the highly repeatable catalyst cleaved the aromatic ring so that DEHP achieved mineralization during the degradation process. Therefore, its ability to completely degrade was very promising for environmental remediation, especially in water treatment. Besides, there were only a few studies on the degradation mechanism and reaction pathway of DEHP under visible light, which provided a theoretical basis for the aromatic compounds' photocatalysis research.
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Affiliation(s)
- Ying Zhang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China; Shenzhen Key Lab of Industrial Water Conservation & Municipal Sewage Resources Technology, School of Construction & Environmental Engineering, Shenzhen Polytechnic, Shenzhen, 518055, PR China.
| | - Hui Yu
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shaofeng Li
- Shenzhen Key Lab of Industrial Water Conservation & Municipal Sewage Resources Technology, School of Construction & Environmental Engineering, Shenzhen Polytechnic, Shenzhen, 518055, PR China
| | - Lei Wang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Fuxin Huang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Rui Guan
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jin Li
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yaqi Jiao
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jian Sun
- Shenzhen Key Lab of Industrial Water Conservation & Municipal Sewage Resources Technology, School of Construction & Environmental Engineering, Shenzhen Polytechnic, Shenzhen, 518055, PR China
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