矿产综合利用2025，Vol.46Issue(2)：153-159,7.DOI:10.3969/j.issn.1000-6532.2025.02.021
TiO2/g-C3N5的制备及对选矿废水中丁基黄药的降解
Preparation of TiO2/g-C3N5 and Degradation of Butyl Xanthate in Mineral Processing Wastewater
摘要
Abstract
In order to achieve the reduction and removal of butyl xanthate,the residual flotation agent in mineral processing wastewater,TiO2 and 3-amino 1,2,4-triazole were used as raw materials to prepare nitrogen-rich graphite phase carbon nitride(g-C3N5)supported TiO2 composite photocatalyst(TiO2/g-C3N5)by ultrasonic dispersion combined with direct thermal polymerization.The crystal form,morphology and optical properties of TiO2/g-C3N5 composite photocatalyst were characterized by XRD,TEM,UV-vis DRS and PL,and it was applied to the photocatalytic degradation of butyl xanthate(SBX)solution.The effects of catalyst dosage,initial concentration of SBX solution and pH value on the photocatalytic degradation performance were investigated,and the cyclic stability of TiO2/g-C3N5 composite photocatalyst was investigated.The results show that TiO2 particles are uniformly dispersed on g-C3N5 nanosheets,which increases the number of active sites.The formation of heterojunction improves its response to visible light,extends its spectral range,promotes the separation of photoelectron-hole and improves its photocatalytic activity.At the conditions of pH=7,catalyst dosage 50 mg,SBX solution initial concentration 55 mg/L,illumination 5 h,the photocatalytic degradation rate of SBX solution by TiO2/g-C3N5 composite photocatalyst reached 99.98%,and it had good stability.关键词
TiO2/g-C3N5/选矿废水/丁基黄药/复合光催化剂/光催化降解Key words
TiO2/g-C3N5/Mineral processing wastewater/Butyl xanthate/Composite photocatalyst/Photocatalytic degradation分类
矿业与冶金引用本文复制引用
卜义夫,刘思乐,李磊,田川,张延祥,王思祺..TiO2/g-C3N5的制备及对选矿废水中丁基黄药的降解[J].矿产综合利用,2025,46(2):153-159,7.基金项目
国家级大学生创新训练计划项目(202213621001) （202213621001）
沈阳科技学院科学研究重点项目(ZD-2021-04) （ZD-2021-04）
山东中城宏业矿业技术有限公司《黄金冶炼贫液及氰化尾渣资源回收和无害化处理技术研究与应用》项目(ZCHY-2021-01) （ZCHY-2021-01）
