物理化学学报2017，Vol.33Issue(5)：1033-1042,10.DOI:10.3866/PKU.WHXB201702101
纳米片自组装的(BiO)2CO3单分散微米绒球的绿色可控合成及其光催化性能
Facile Green Synthesis of Highly Monodisperse Bismuth Subcarbonate Micropompons Self-assembled by Nanosheets: Improved Photocatalytic Performance
摘要
Abstract
This work reports a controlled green synthesis of highly monodisperse bismuth subcarbonate (BS) micropompons self-assembled by nanosheets using a simple and facile hydrothermal route in which deionized water,bismuth nitrate pentahydrate (BNP),and urea were used as the solvent,bismuth source,and carbon source respectively.Trisodium citrate dihydrate (TCD) was used as a coordination agent to fabricate a complex precursor.The structure and morphology of the BS materials can be finely modulated by adjusting the initial concentration ratios of the reactants or the reaction time.The presence of TCD decreased the formation rate of BS due to a direct competitive interaction for the BiO* ions between a coordination equilibrium and a precipitation equilibrium.Urea played a crucial role (e.g.,carbon source,alkaline source,morphology control agent,and crystal growth control agent) in the formation of the BS microstructures.We obtained three kinds of BS crystals with preferred orientations along [001],[110],and [013] by adjusting the concentration of urea.Our synthesis approach has the advantages of low cost,high reaction yields,monodisperse particles,controlled morphologies and orientations,and not requiring the use of organic solvents,templates,surfactants,high temperatures,and long reaction times.Particularly,when compared with those reported by other investigators,the micropompon material exhibited improved photocatalytic performance for Rhodamine B due to a unique microstructure (large specific surface area,high efficiency of photoelectric conversion,small interracial chargetransfer resistance,and active {001} exposed facets).These results indicate a major advance in the controlled green synthesis and the application of inorganic micro-and nano-materials.关键词
碳酸氧铋/绿色可控合成/光催化性能/微米绒球/二水合柠檬酸三钠Key words
Bismuth subcarbonate/Controlled green synthesis/Photocatalytic performance/Micropompons/Trisodium citrate dihydrate分类
化学化工引用本文复制引用
阮毛毛,宋乐新,王青山,夏娟,杨尊,滕越,许哲远..纳米片自组装的(BiO)2CO3单分散微米绒球的绿色可控合成及其光催化性能[J].物理化学学报,2017,33(5):1033-1042,10.基金项目
The project was supported by the Natural Science Foundation of Anhui Province,China (1508085MB30) and Fundamental Research Funds for the Central Universities,China (WK2060190052,WK6030000017).安徽省自然科学基金(1508085MB30)和中央高校基本科研专项资金(WK2060190052,WK6030000017)资助项目 （1508085MB30）
