http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Nthambeleni Mukwevho,Rashi Gusain,Elvis Fosso-Kankeu,Neeraj Kumar,Frans Waanders,Suprakas Sinha Ray 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.81 No.-
In this study, a ZnO/Ag/GO nanocomposite was synthesised and used as photocatalyst for effectivephotodegradation of naphthalene from simulated wastewater under visible light. Chemical andmorphological characterisation were successfully done using XRD, PL, UV–vis, FTIR, XPS, FESEM andHRTEM analytical tools. Photocatalytic degradation experiments werefirst carried out under darkconditions and then under visible-light irradiation. Adsorption study of naphthalene prior tophotocatalysis using synthesised material was thoroughly done by studying the kinetics and adsorptionisotherm models. All as-synthesised materials (ZnO nanoparticles, binary ZnO/Ag, and ternary ZnO/Ag/GO nanocomposites) followed pseudo-second-order kinetics and the Freundlich adsorption isotherm,confirming the adsorption on hetero-structural surface. ZnO/Ag/GO could successfully adsorb 80%naphthalene in 20 min, with 500 mg.g 1 adsorption capacity. High adsorption of naphthalene moleculeson ZnO/Ag/GO surfaces trigger improved photodegradation efficiency upon light irradiation. Incorporationof plasmonic Ag nanoparticles and 2D graphene oxide (GO) to ZnO semiconductor improved thephotocatalytic degradation efficiency of naphthalene, achieving up to 92% degradation in 50 min. Thephotodegradation of naphthalene follows the Langmuir-Hinshelwood kinetics model and was foundacceptable to express the photodegradation rate. Furthermore, the ZnO/Ag/GO photocatalyst could easilybe recycled and reused forfive cycles, maintaining up to 85% of its photodegradation efficiency.