A Surfactant-Free Synthesis Technique of Coral-Like Zno Hierarchical Structures for Photocatalytic Degradation of Resorcinol under UV Irradiation

2017 2nd International Conference on Environmental Engineering and Sustainable Development

生态环境科学;经济学

Sin, Jin-Chung^1 ; Lam, Sze-Mun^2 ; Chin, Ying-Hui^1

Department of Petrochemical Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Perak, Kampar

31900, Malaysia^1

Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Perak, Kampar

31900, Malaysia^2

关键词: Characterization tests;    Electrical charges;    Hierarchical structures;    Hydroxyl radicals;    Photo catalytic degradation;    Surfactant-free;    Synthesis techniques;    Wet-chemical method;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/112/1/012002/pdf
DOI  :  10.1088/1755-1315/112/1/012002

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Hierarchical coral-like ZnO structures were successfully prepared by a surfactant-free wet chemical method. Various characterization tests were carried out to analyze the as-prepared ZnO samples. The coral-like ZnO was used to degrade resorcinol at three different solution pH values (pH 5.0, pH 8.0 and pH 11.0). It was observed that the resorcinol adsorption onto the ZnO was strongly dependent on the electrical charge properties of both photocatalyst and resorcinol. Photocatalytic degradation of resorcinol reached the highest at pH 11.0 due to high concentration of hydroxyl ions for hydroxyl radicals generation.