Tang Jiale, Cheng Gang, Zhou Huamin, Yang Hao, Lu Zhong, Chen Rong
Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology and School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, PR China.
J Nanosci Nanotechnol. 2012 May;12(5):4028-34. doi: 10.1166/jnn.2012.6168.
Different shaped bismuth subcarbonate ((BiO)2CO3) nanostructures including irregular nanoplates, relatively uniform nanoplates and nanocubes were prepared and characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS) and nitrogen adsorption. The photocatalytic performance of the as-synthesized (BiO)2CO3 nanostructures on the degradation of Rhodamine B (RhB), methyl orange (MO) and methyl blue (MB) were evaluated under UV-vis light irradiation (modeling sunlight). The photocatalysis tests showed that all the different (BiO)2CO3 nanostructures displayed enhanced photodegradation performance compared with commercial (BiO)2CO3. The irregular (BiO)2CO3 nanoplates exhibited the highest photocatalytic activity on the degradation of different organic dyes. (BiO)2CO3 nanosturctures exhibited the different capacity to bleach the three organic dyes, which might be attributed to their different molecular structures. This work may provide a potential photocatalyst for the environmental pollutants treatments.
制备了包括不规则纳米片、相对均匀的纳米片和纳米立方体在内的不同形状的碱式碳酸铋（(BiO)2CO3）纳米结构，并通过粉末X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、紫外-可见漫反射光谱（DRS）和氮气吸附对其进行了表征。在紫外-可见光照射（模拟太阳光）下，评估了合成的（BiO）2CO3纳米结构对罗丹明B（RhB）、甲基橙（MO）和亚甲基蓝（MB）的光催化降解性能。光催化测试表明，与市售（BiO）2CO3相比，所有不同的（BiO）2CO3纳米结构均表现出增强的光降解性能。不规则的（BiO）2CO3纳米片对不同有机染料的降解表现出最高的光催化活性。（BiO）2CO3纳米结构对三种有机染料的漂白能力不同，这可能归因于它们不同的分子结构。这项工作可能为环境污染物处理提供一种潜在的光催化剂。
