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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Reactive adsorption of CEES on iron oxyhydroxide/(N-)graphite oxide composites under visible light exposure
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Reactive adsorption of CEES on iron oxyhydroxide/(N-)graphite oxide composites under visible light exposure

机译：CEES在可见光下对羟基氧化铁/（N-）石墨氧化物复合材料的反应吸附

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摘要

The interactions of 2-chloroethyl ethyl sulfide (CEES) with the surface of iron oxyhydroxide and its composites with graphite oxide and/or aminated graphite oxide were studied under visible light irradiation. Materials exposed to CEES were extensively characterized by FTIR-STR, UV-VIS-NIR, and TA-MS. The gaseous/vaporous reaction products were identified by GC-MS. The compounds deposited on the surface of the materials were analyzed in acetonitrile extracts by NMR and MS-MS. The FTIR results indicated the existence of alcohol groups on the surface of the exhausted samples and the involvement of OH groups in the CEES reactive adsorption. Ethyl vinyl sulfide (EVS) was the only volatile compound detected as a result of the reaction with the surface. Two adsorption sites for either CEES or EVS were identified on the adsorbent surfaces. As a result of CEES reactive adsorption Fe(III) was reduced, which indicates its crucial role in the oxidation of CEES and EVS. On the composites, the detection of disulfides as products of advanced oxidation of CEES suggests the activation of thiyl and oxygen radicals. This indicates that the incorporation of GO and GOU into iron oxyhydroxides strongly increases the oxidation potential of oxyhydroxides and induces the formation of radicals. The main promoters of CEES transformation are proposed to be OH groups and thiyl radicals.
机译：在可见光照射下研究了2-氯乙基乙基硫醚（CEES）与羟基氧化铁及其复合材料与氧化石墨和/或胺化氧化石墨的相互作用。暴露于CEES的材料已通过FTIR-STR，UV-VIS-NIR和TA-MS进行了广泛表征。气态/气态反应产物通过GC-MS鉴定。通过NMR和MS-MS在乙腈萃取物中分析沉积在材料表面的化合物。 FTIR结果表明，耗尽样品表面存在醇基，而OH基参与了CEES反应性吸附。乙基乙烯基硫醚（EVS）是与表面反应的唯一检测到的挥发性化合物。在吸附剂表面上发现了CEES或EVS的两个吸附位。由于CEES的反应性吸附，Fe（III）减少，表明Fe（III）在CEES和EVS的氧化中起关键作用。在复合材料上，检测到二硫化物是CEES的高级氧化产物，表明硫醇和氧自由基的活化。这表明将GO和GOU掺入羟基氧化铁中强烈地增加了羟基氧化铁的氧化电位并诱导了自由基的形成。提出CEES转化的主要启动子是OH基团和噻吩基。

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