Process,influence factors and mechanism of direct generation of zinc metal using laser to irradiate ZnS  

激光辐照ZnS直接生成金属锌的过程、影响因素及相互作用机理

作　　者：Ying CHEN Ning DUAN Lin-hua JIANG Hao JIN Yao WANG Yong LIU 陈莹;段宁;降林华;金浩;王垚;刘永(同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海200092;上海污染控制与生态安全研究院,上海200092)

机构地区：[1]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China

出　　处：《Transactions of Nonferrous Metals Society of China》2025年第2期613-624,共12页中国有色金属学报(英文版)

基　　金：Shanghai Leading Talent Project,China (No. 2022048);National Natural Science Foundation of China (No. 52174385)。

摘　　要：The generation process,influence of the laser parameters on the production of zinc metal(Zn^(0)),and the mechanism of interaction between the laser and ZnS were studied.It was observed that an increase in the number of S defects enhanced the quantity of Zn^(2+)ejected from the ZnS crystals,which increased the possibility of Zn^(2+)bonding with electrons to produce Zn^(0).A maximum Zn^(0) content of 9.3%in the products was detected upon changing the laser parameters.Upon analyzing the changes in the surface topography during the laser interaction with ZnS,it was shown that the interaction mechanism between laser and ZnS had a synergistic effect comprised of photochemical and photothermal processes,in which the photochemical mechanism predominated.研究金属锌(Zn^(0))的生成过程、激光参数对Zn^(0)生成的影响以及激光与ZnS之间的相互作用机理。研究发现,S缺陷的增加可提高Zn^(2+)从ZnS晶体中被激发出的数量,从而增加Zn^(2+)与自由电子结合生成Zn^(0)的概率。通过改变激光参数,产物中Zn^(0)的含量最高可达9.3%。深入分析激光辐照ZnS后表面形貌的变化可知,激光与ZnS的相互作用机理为光化学与光热协同效应,其中光化学作用占主导地位。

关 键 词：laser metallurgy sulfur defects surface topography photochemical reduction zinc metal 

分 类 号：TG146.13[一般工业技术—材料科学与工程] TG665[金属学及工艺—金属材料]