氧化石墨烯-氧化锌净化铅离子废水

利用改性Hummers法制备氧化石墨,并成功地将氧化锌负载到氧化石墨上催化降解铅离子。利用SEM、XRD、FTIR等对氧化石墨烯-氧化锌的形貌进行表征,并用以净化铅离子废水。通过实验分析得知废水净化的原因有两方面:光催化效应和吸附理论,然后考察其影响净化过程的因素。结果表明,氧化石墨烯-氧化锌对溶液中铅离子在紫外光下有较强的吸附和催化降解能力,在t=4 h,pH=7条件下,其最大净化量可达到184 mg/g。

Purification of lead ion wastewater by graphene oxide-zinc oxide

Zinc oxide was loaded on graphite oxide synthesized by modified Hummers method for catalytic degradation of lead ions. The morphology of graphene oxide-zinc oxide were characterized by SEM, XRD, FTIR, etc, which was used to purify the lead ions. Wastewater was purified through experiment, which lie in two reasons:photocatalytic effect and adsorption theory. Then factors affecting the purification process were studied. Results showed that graphene oxide-zinc oxide has a strong ability of adsorption and catalytic degradation of lead ion in the ultraviolet light under conditions of t=4 h, pH=7, and the biggest purification capacity can reach 184 mg/g.