Solar-assisted selective separation and recovery of precious group metals from deactivated air purification catalysts

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外文摘要：The mitigation of environmental and energy crises could be advanced by reclaiming platinum group pre-cious metals(PGMs)from decommissioned air purification catalysts.However,the complexity of catalyst composition and the high chemical inertness of PGMs significantly impede this process.Consequently,recovering PGMs from used industrial catalysts is crucial and challenging.This study delves into an envi-ronmentally friendly approach to selectively recover PGMs from commercial air purifiers using photocat-alytic redox technology.Our investigation focuses on devising a comprehensive strategy for treating three-way catalysts employed in automotive exhaust treatment.By meticulously pretreating and modi-fying reaction conditions,we achieved noteworthy results,completely dissolving and separating rhodium(Rh),palladium(Pd),and platinum(Pt)within a 12-h time frame.Importantly,the solubility selectivity persists despite the remarkably similar physicochemical properties of Rh,Pd,and Pt.To bolster the envi-ronmental sustainability of our method,we harness sunlight as the energy source to activate the photo-catalysts,facilitating the complete dissolution of precious metals under natural light irradiation.This eco-friendly recovery approach demonstrated on commercial air purifiers,exhibits promise for broader appli-cation to a diverse range of deactivated air purification catalysts,potentially enabling implementation on a large scale.

外文关键词：

PhotocatalysisAir purification catalystsPlatinum group precious metalsSelective recovery

作者：

Meijun Wu、Yao Chen、Zhenpeng Guo、Xinru Wang、Hanyun Zhang、Ting Zhang、Shuhui Guan、Zhenfeng Bian

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作者单位：

Ministry of Education Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials,Shanghai Normal University,Shanghai 200234,China

Department of Chemistry,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Fudan University,Shanghai 200438,China

Shanghai YK Pao School,Shanghai 201620,China

基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaInnovation Program of Shanghai Municipal Education CommissionProgram of Shanghai Academic Research LeaderShanghai GovernmentShanghai GovernmentChinese Education Ministry Key Laboratory and International Joint Laboratory on Resource ChemistryShanghai Eastern Scholar Programthe"111 Innovation and Talent Recruitment Base on Photochemical and Energy Materials"Shanghai Engineering Research Center of Green Energy Chemical EngineeringShanghai Frontiers Science Center of Biomimetic Catalysis

项目编号：

2020YFA021100422176128222360052023ZKZD5021XD142280022dz1 20540023520711100D1802018DZ2254200

出版年：

2024

DOI：

10.1016/j.scib.2024.04.058

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

年,卷(期)：2024.69(15)