掺杂和负载参数对负载于壳聚糖活性炭上的锡掺杂氧化锌光催化降解亮绿的影响。
Effect of doping and loading Parameters on photocatalytic degradation of brilliant green using Sn doped ZnO loaded CSAC.
作者信息
Ragupathy S, Priyadharsan A, AlSalhi Mohamad S, Devanesan Sandhanasamy, Guganathan L, Santhamoorthy M, Kim S C
机构信息
Department of Physics, E.R.K. Arts and Science College, Erumiyampatti, Dharmapuri, 636 905, Tamil Nadu, India.
Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia.
出版信息
Environ Res. 2022 Jul;210:112833. doi: 10.1016/j.envres.2022.112833. Epub 2022 Feb 9.
Sn doped ZnO loaded cotton stalk activated carbon (Sn-ZnO/CSAC) was prepared by chemical precipitation method, and the products were characterized. The XRD resultants confirm that the presence of hexagonal wurtzite phase of the bare ZnO. Furthermore, particular particle size gradually decreases (21.49 nm) due to doping and loading. UV-Vis absorption intensity of doped/loaded sample was red-shifted and then PL intensity is reduced. The photocatalytic performances of bare, Sn-doped ZnO and Sn-ZnO/CSAC was estimated by photodegradation of brilliant green (BG) under sunlight. The photodegradation of BG dye in 120 min over Sn-doped ZnO/CSAC is nearly 96.52%, which is considerably improved than bare ZnO (72.60%), respectively.
采用化学沉淀法制备了掺锡氧化锌负载棉秆活性炭（Sn-ZnO/CSAC），并对产物进行了表征。X射线衍射结果证实了纯氧化锌六方纤锌矿相的存在。此外，由于掺杂和负载，特定粒径逐渐减小（21.49纳米）。掺杂/负载样品的紫外-可见吸收强度发生红移，然后光致发光强度降低。通过在阳光下对亮绿（BG）进行光降解来评估纯氧化锌、掺锡氧化锌和Sn-ZnO/CSAC的光催化性能。在120分钟内，掺锡氧化锌/CSAC对BG染料的光降解率接近96.52%，分别比纯氧化锌（72.60%）有显著提高。
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