气候变化领域集成服务门户(CCPortal): Selective recovery of precious metals through photocatalysis

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DOI	10.1038/s41893-021-00697-4
	Selective recovery of precious metals through photocatalysis
	Chen Y.; Xu M.; Wen J.; Wan Y.; Zhao Q.; Cao X.; Ding Y.; Wang Z.L.; Li H.; Bian Z.
发表日期	2021
ISSN	2398-9629
起始页码	618
结束页码	626
卷号	4 期号:7
英文摘要	Precious metals such as gold and platinum are valued materials for a variety of important applications, but their scarcity poses a risk of supply disruption. Recycling precious metals from waste provides a promising solution; however, conventional metallurgical methods bear high environmental costs and energy consumption. Here, we report a photocatalytic process that enables one to selectively retrieve seven precious metals—silver (Ag), gold (Au), palladium (Pd), platinum (Pt), rhodium (Rh), ruthenium (Ru) and iridium (Ir)—from waste circuit boards, ternary automotive catalysts and ores. The whole process does not involve strong acids or bases or toxic cyanide, but needs only light and photocatalysts such as titanium dioxide (TiO2). More than 99% of the targeted elements in the waste sources can be dissolved and the precious metals recovered after a simple reducing reaction that shows a high purity (≥98%). By demonstrating success at the kilogram scale and showing that the catalysts can be reused more than 100 times, we suggest that this approach might be industry compatible. This research opens up a new path in the development of sustainable technologies for recycling the Earth’s resources and contributing to a circular economy. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Catalysts; Energy utilization; Metal recovery; Oxide minerals; Recycling; Titanium dioxide; Automotive catalysts; Environmental costs; Photocatalytic process; Reducing reactions; Selective recovery; Supply disruption; Sustainable technology; Titanium dioxides (TiO2); Platinum metals
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249773
作者单位	MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China; Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, United States; Shanghai University of Electric Power, Shanghai, China
推荐引用方式 GB/T 7714	Chen Y.,Xu M.,Wen J.,et al. Selective recovery of precious metals through photocatalysis[J],2021,4(7).
APA	Chen Y..,Xu M..,Wen J..,Wan Y..,Zhao Q..,...&Bian Z..(2021).Selective recovery of precious metals through photocatalysis.Nature Sustainability,4(7).
MLA	Chen Y.,et al."Selective recovery of precious metals through photocatalysis".Nature Sustainability 4.7(2021).