钼离子掺杂g-C3N4纳米片光催化剂降解黄药废水的研究  

Study on Degradation of Xanthate-containing Mining Wastewater by Molybdenum Ion Doped g-C3N4 Nanosheet Photocatalyst

作　　者：薛闯 王舰 杨壮 高星星[2] 马艺闻 王恩雷 赵通林 陶东平 Xue Chuang;Wang Jian;Yang Zhuang;Gao Xingxing;Ma Yiwen;Wang Enlei;Zhao Tonglin;Tao Dongping(School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114051,China;School of CivilEngineering,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁鞍山114051 [2]辽宁科技大学土木工程学院,辽宁鞍山114051

出　　处：《金属矿山》2019年第9期189-194,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:21806065);辽宁省高等教育创新团队项目(编号:LT2016003);辽宁科技大学青年人才基金项目(编号:601011507-24);辽宁省教育厅基金项目(编号:2017LNQN10)

摘　　要：采用热聚合法合成体相g-C3N4,采用球磨法结合空气氧化蚀刻法制备Mo/g-C3N4二维纳米片。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线衍射能谱(EDS)、傅里叶变换红外光谱(FTIR)、紫外-可见吸收光谱(UV-Vis)、光致发光谱(PL)对Mo/g-C3N4二维纳米片形貌结构及光学特性等进行分析,结果表明:Mo离子成功掺杂到二维g-C3N4纳米片晶格中,拓宽了光谱响应范围,提高了量子传输效率。以异丁基钠黄药溶液模拟选矿废水,探索了二维Mo/g-C3N4纳米片对黄药的光催化降解性能。研究表明,异丁基钠黄药初始浓度为50 mg/L、溶液p H=7、降解时间6 h条件下,Mo/g-C3N4对异丁基钠黄药的降解率为90.12%,循环5次后,降解率仍可达81.2%,Mo/g-C3N4纳米片光催化稳定性好。Pure phase g-C3N4 was synthesized by thermal polymerization,and Mo/g-C3N4 two-dimensional nanosheets were prepared by ball milling combined with air oxidation etching by use of X-ray diffractometer(XRD),scanning electron microscope(SEM),X-ray diffraction spectroscopy(EDS),Fourier transform infrared spectroscopy(FTIR),UV-visible absorption spectroscopy(UV-Vis)and photoluminescence spectroscopy(PL)to characterize Mo/g-C3N4 two-dimensional nanosheets.The results show that Mo ions are successfully doped into the two-dimensional g-C3N4 nanosheet lattice,which broaden spectral response range and improve quantum transmission efficiency.The photocatalytic degradation activity of two-dimensional Mo/g-C3N4 nanosheets was explored by simulating the ore dressing wastewater with isobutyl sodium xanthate solution.The results showed that the degradation rate of isobutyl sodium xanthate was 90.12%by Mo/g-C3N4 nanosheets under the conditions of pH=7,initial concentration of xanthate 50 mg/L and degradation time of 6 h,by five times circulation,the degradation rate can also up to 81.2%.The photocatalysis stability of Mo/g-C3N4 is well.

关 键 词：氮化碳 钼离子掺杂 异丁基钠黄药 光催化 选矿废水 

分 类 号：TD926.5[矿业工程—选矿] X751.03[环境科学与工程—环境工程]