材料工程2019，Vol.47Issue(3)：71-78,8.DOI:10.11868/j.issn.1001-4381.2018.001261
铁盐对制备MIL-100(Fe)的影响及其光催化性能
Effects of iron salts on synthesis of MIL-100 (Fe) and photocatalytic activity
摘要
Abstract
The iron salts (ferric and ferrous salts) play a critical role for the synthesis of morphology and size controllable, and highly crystalline MIL-100 (Fe) . The use of ferrous salt results in octahedral, highly crystalline MIL-100 (Fe) with high surface areas. In contrast, the use of ferric salt only results in smaller Fe-BTC metal-organic polymers with low crystallinity. The crystal structure, morphology, photo-absorption property, absorption and photocatalytic-degradation properties of MIL-100 (Fe) and Fe-BTC toward RhB, were fully characterized by XRD, SEM, FT-IR, UV-Vis DRS, and UV-Vis spectroscopy. The results indicate that the slow oxidation of Fe2+ to Fe3+ is key to the synthesis of highly crystalline MIL-100 (Fe) since this process facilitates the formation of μ3-OFe (Ⅲ) O6, which is inorganic secondary building unit (SBU) of MIL-100 (Fe) . When FeCl3 used as iron source, the fast dynamic reaction of Fe3+ with BTC3- is not beneficial to the formation of μ3-OFe (Ⅲ) O6 SBU; therefore, Fe-BTC nanoparticle polymer is obtained. The smaller size of Fe-BTC nanoparticless, and meso-/macroporous structure in the aggregated nanoparticle surface, which facilitates the diffusion of RhB as well as the photodegradated forms. Fe-BTC shows better absorption capacity and photocatalytic activity toward RhB compared to MIL-100 (Fe) .关键词
多孔材料/金属-有机骨架化合物/MIL-100 (Fe)/有机染料光降解/光催化Key words
porous materials/metal-organic frameworks/MIL-100 (Fe)/organic dye photo-degradation/photocatalysis分类
化学化工引用本文复制引用
张宇,刘湘粤,毛会玲,王晨,杜嬛,程琥,庄金亮..铁盐对制备MIL-100(Fe)的影响及其光催化性能[J].材料工程,2019,47(3):71-78,8.基金项目
国家自然科学基金(21861013) （21861013）
贵州省科技厅重点基金项目(黔科合基础[2016]14B) （黔科合基础[2016]14B）
贵州省教育厅普通高等学校科技拔尖人才支持计划(黔教合KY字[2017]) （黔教合KY字[2017]）
