摘要
利用AFM ,XRD ,UV Vis等手段对Ag+ /ZnO掺杂体系的形貌、平均粒径、吸收光谱进行表征 .研究了苯酚的初始浓度对光催化的影响 .探讨了在紫外光和太阳光下对 4 0mg/L苯酚溶液的光催化降解性能 ,结果表明掺杂后能有效利用太阳能进行光催化降解 ,当Ag+ 掺杂摩尔含量为 2 .0 0 %时 ,反应常数Ksunlight/KUV=1 .78,与掺杂前相比Ksunlight和KUV分别提高 1 5倍和 1 1 .
The topography, average size and absorption spectra were characterized by SPM. XRD, UV Vis method. The effect of initial concentration on photocatalytic degradation was studied. Under UV and sunlight irradiation in aqueous suspension, the photocatalytic degradation performance of phenol was investigated. It was demonstrated that the Ag +/ZnO nano crystals have more powerful capability than undoped one in utilizing solar energy. With the Ag doped dosage of 2.00?%, the rate of reaction constant ( K sunlight / K UV ) is 1.78, K sunlight and K UV are 15 and 11.4 times more than those of undoped respectively.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第8期68-70,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (5 0 0 4 1 0 2 4 )
关键词
Ag^+/ZnO纳米晶
光催化降解
苯酚
太阳能
Ag +/ZnO nanometer crystallite
photocatalytic degradation
phenol
solar energy
