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Liu C, Yang B, Jia F, Song S. Construction of MoS 2@Activated Alumina Beads as Catalysts for Rapid Gold Recovery from Au(S 2O 3) 23- Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8054-8064. [PMID: 35734859 DOI: 10.1021/acs.langmuir.2c00847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Gold recovery from thiosulfate leaching solution Au(S2O3)23- is regarded as a tough task because of the low efficiency and complex procedure in current technology, which hindered the industrial application of this eco-friendly technique. In this work, a MoS2@activated alumina bead composite (MoS2@AA) was constructed through a simple hydrothermal anchoring method and served as a catalyst to recover gold from Au(S2O3)23- solution for the first time. The microstructure and chemical component of MoS2@AA were systematically analyzed. In addition, batch experiments were carried out to explore the recovery behavior of Au(S2O3)23- (concentration: 10 to 200 ppm). Ascribing to the extraordinary optical property of MoS2@AA, Au(S2O3)23- could be directly reduced to Au0 by photogenerated electrons and then form a two-phase interface of gold/MoS2@AA. As a result, the recovery of Au(S2O3)23- can reach up to 98% on MoS2@AA, which was much higher than traditional methods. More importantly, the reduced Au0 could be desorbed from MoS2@AA through a supersonic method, achieving one-step Au0 recovery from Au(S2O3)23-. This novel strategy used in this research has great significance to the development of Au(S2O3)23- recovery in the future.
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Affiliation(s)
- Chang Liu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Bingqiao Yang
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Xiongchu Avenue 693, Wuhan, Hubei 430073, China
| | - Feifei Jia
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Shaoxian Song
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
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Magnetite nanoparticles into Fe-BTC MOF as adsorbent material for the remediation of metal (Cu(II), Pb(II, As(III) and Hg(II)) ions-contaminated water. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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