| 摘要: |
| 采用化学沉淀法成功制备了Cu2+/SnO2复合纳米光催化剂，采用XRD、SEM等测试手段对复合纳米光催化剂的粒径、形态等进行表征。在紫外光条件下，分别改变催化剂掺杂比、催化剂煅烧温度、催化剂投加量、柴油初始含量和光照时间等单因素，探究不同条件对Cu2+/SnO2复合纳米光催化剂降解海洋柴油污染物的影响。结果表明，自制复合纳米光催化剂可以有效降解海水中的柴油污染物，在紫外光作用下，于400 ℃下煅烧Cu/Sn掺杂比为0.03的Cu2+/SnO2复合纳米光催化剂、投加量为0.2 g/dm3、柴油初始含量为0.15 g/dm3、H2O2溶液含量为0.2 g/dm3、溶液的pH为7、光照时间3 h时效果最好，海水中柴油的去除率最高，达到86.98%。Cu2+/SnO2复合纳米光催化剂用聚丙烯纳米球负载后可以实际应用于海洋中，便于回收。 |
| 关键词: 海洋环境科学 Cu2+/SnO2复合纳米光催化剂 海洋柴油污染物 光催化降解 掺杂 |
| DOI：10.3969/J.ISSN.2095-4972.2020.03.013 |
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| 基金项目:自然资源部海洋公益性行业科研专项资助项目（20130500）；辽宁省科学事业公益研究基金资助项目（20170002）；辽宁省海洋与渔业厅科研项目资助项目（201733） |
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| Preparation of Cu2+/SnO2 composite nanophotocatalyst and its degradation of marine diesel pollutant |
| LIAO Jia-qi,YU Xiao-cai,ZHU Wan-ting,TIAN Si-yao,XUE Bi-ning,YU Run-qiang |
| (College of Ocean Technique and Environment， Dalian Ocean University， Dalian 116023， China) |
| Abstract: |
| Cu2+/SnO2 composite nanophotocatalyst was successfully prepared by chemical precipitation method. The particle size and morphology of the composite nanophotocatalyst were characterized by XRD and SEM.The effects of Cu2+/SnO2 composite nanophotocatalyst on the degradation of marine diesel pollutant were studied under different conditions of ultraviolet illumination, catalyst doping ratio, catalyst calcination temperature, catalyst input, initial diesel concentration and illumination time.The results indicate that self-made composite nanophotocatalyst can effectively degrade diesel pollutant in seawater. It was found that the Cu2+/SnO2 composite nanophotocatalyst with a copper/tin doping ratio of 0.03 and calcination temperature at 400 °C had gained the highest removal rate 86.98% of diesel when 0.2 g/dm3 dosage of catalyst was added in the solution with an initial diesel concentration 0.15 g/dm3 and H2O2 concentration 0.2 g/dm3 at pH 7 and under ultraviolet light for 3 hours. The Cu2+/SnO2 composite nanophotocatalyst can be practically applied to the ocean after loaded by polypropylene balls for the recycle. |
| Key words: marine environmental science Cu2+/SnO2 composite nanophotocatalyst marine diesel pollutant photocatalytic degradation doping |
