Study on A Laser-induced Photoredox Reaction for the Extraction of Precious Elements from Aqueous Solutions
Study on A Laser-induced Photoredox Reaction for the Extraction of Precious Elements from Aqueous Solutions
复制标题
激光诱导光氧化还原反应从水溶液中提取贵重元素的研究
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Yong‐Ill Lee
中科院分区：
文献类型：
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作者：
K. Song;H. Cha;Jongmin Lee;Jong;Yong‐Ill Lee
从水溶液中提取贵金属是通过使用Q开关Nd：YAG激光器的光氧化还原反应进行的。采用激光光解法从硝酸银溶液中有效地沉淀和萃取金属银。通过对还原剂种类、酸种类、反应时间等实验因素的调整，确定了萃取银的最佳反应条件。分析了反应产物的组成，确定其为金属银，而不是其他分子类型。还研究了氯化铬（III）在酸性水溶液中的光反应。与532 nm的光相比，355 nm的激光更适合于硝酸银以及氯化铬（III）在酸性溶液中的反应。
The extraction of precious metals from aqueous solutions is performed by using a photoredox reaction with a Q-switched Nd:YAG laser. The metallic silver was efficiently precipitated and extracted from the silver nitrate solution by laser photolysis. An optimum reaction condition for silver extraction was determined by adjusting various experimental factors such as type of reducing agent, type of acids and reaction time. The composition of the reaction product was analyzed and it was identified as metallic silver, not other molecular types. The photoreaction of chromium(III) chloride in an acidic aqueous solution was also investigated. The 355 nm laser light was better suited for the reaction of silver nitrate as well as chromium(III) chloride in an acidic solution compared to the 532 nm light.