光催化
微晶
热液循环
材料科学
扫描电子显微镜
化学工程
光致发光
八面体
刚果红
形态学(生物学)
纳米结构
纳米颗粒
核化学
纳米技术
晶体结构
催化作用
结晶学
化学
冶金
吸附
复合材料
有机化学
光电子学
工程类
生物
遗传学
作者
Azam Anaraki Firooz,Ali Reza Mahjoub,Abbas Ali Khodadadi,Maryam Movahedi
标识
DOI:10.1016/j.cej.2010.09.052
摘要
Different structures and morphologies of SnO2 containing various amounts of ZnO were synthesized via a hydrothermal method (without any template), characterized by scanning electron microscopy and powder X-ray diffraction, and used for photocatalytic degradation of Congo red. The results revealed that using different ratios of Zn+2/Sn+2 affects the phase and morphology of the Zn2xSn1−xO2 compounds. This type of tailoring the morphology of SnO2 nanoparticles, ZnO doped SnO2 porous structure, ZnSnO3 flower-like, and Zn2SnO4 octahedrals was possible, by varying the Zn+2/Sn+2 ratio of 0, 1/10, 1/5 and 1/1, respectively. The formation mechanism of these products was proposed. Zn2SnO4 with octahedral morphology exhibited a significant enhancement of photocatalytic activity toward degrading Congo red, as compared to other samples. This could be attributed to enhanced oxygen vacancies and crystallite defects formed by substitution of Zn+2 in the lattice of SnO2, revealed in photoluminescence measurements.
科研通智能强力驱动
Strongly Powered by AbleSci AI