纳米薄片状氯氧化铋的制备及其热解行为  

Preparation and Thermal Decomposition of Nanoflakes Bismuth Oxychloride Crystals

作　　者：吴飞飞[1,2,3] 马春阳[1] 焦金龙 肖清贵[2,3] 张笛[2,3] 徐红彬[2,3] 张懿[2,3] 

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室,北京100190 [3]中国科学院绿色过程与工程重点实验室,北京100190 [4]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《硅酸盐学报》2016年第7期948-952,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(21376251;51474072;21406233)

摘　　要：通过铋盐水解法制备了薄片状氯氧化铋(Bi OCl)晶体。采用X射线衍射仪、热场发射扫描电子显微镜、高分辨场发射透射电子显微镜和热重分析仪表征了晶体产物的物相、晶体形貌和热解行为,研究了晶体的光催化性能。结果表明:水解法可制备纳米薄片状氯氧化铋晶体,其厚度约为70 nm,截面尺寸约300 nm×500 nm;氯氧化铋晶体在600℃开始分解,分解中间产物为Bi_xCl_y、Bi_xO_yCl_z、Bi_2O_3,于800℃分解结束,最终分解产物为Bi_3O_4Cl。Bismuth oxychloride （BiOCl） nano-flakes were prepared with hydrolyzing bismuth salt in the presence of hydrochloric acid. The phase, morphologies and thermal decomposition behavior of the as-synthesized BiOCl were characterized by X-ray diffraction, thermal field emission scanning electron microscopy, high-resolution field emission transmission electron microscopy and thermogravimetric analysis, respectively. The photocatalytic activity of crystal sample was investigated. The results show that the nanoflakes with a thickness of approximately 70nm and a cross section of approximately 300nm×500nm can be prepared by a hydrolysis method. The crystals are decomposed at 〉 600℃, and the final product at 800℃ is Bi3O4Cl. The intermediate product during the decomposition is BixCly, BixOyClz, Bi2O3.

关 键 词：氯氧化铋 纳米薄片 水解法 热解行为 

分 类 号：TQ124.4[化学工程—无机化工]