三维CuO/NF纳米复合结构的光微反应器还原CO2性能强化研究
Enhancement on performance of 3D CuO/NF nanocomposite photomicro-reactor in CO2 reduction
光催化二氧化碳与水转化获得化学能可以同时解决二氧化碳排放和能源需求增加的问题。在氙灯(350W)照射的光微反应器中,评估了CuO/NF纳米复合结构在连续光催化还原CO2为甲醇中的性能。通过将含有不同浓度的CuO纳米颗粒水热法负载在镍泡沫上,制备了具有光响应性的CuO/NF纳米复合结构。通过形貌和BET表征可知,与裸镍泡沫相比,CuO的负载使复合材料在可见光区具有更好的活性。通过紫外漫反射和带隙分析可知,当Cu浓度为0.05 mol/L时,在可见光下具有最佳的光催化性能。结果表明,所设计的光微反应器中甲醇的产率为8.01 μmol/h,约为普通管式反应器的1.45倍。
Photocatalytic conversion of CO2 with water to obtain chemical energy can simultaneously address the issues of CO2 emission and the increased energy demand.The performance of CuO/NF nanocomposite structure in the continuous photocatalytic reduction of CO2 to methanol is evaluated in a photomicro reactor irradiated by a xenon lamp (350 W).Photo-responsive CuO/NF nanocomposite structure is prepared through hydrothermally loading CuO nanoparticles containing different concentrations of CuO onto nickel foam.As shown by morphology and BET characterization,the loading of CuO makes the composite own better activity in the visible region than bare nickel foam.It is indicated through UV diffuse reflectance and band gap analysis that the best photocatalytic performance of the composite in the visible light can be obtained when Cu concentration is 0.05 mol·L-1.It is shown that the yield of methanol in the designed photomicro reactor is 8.01 μmol·h-1,which is about 1.45 times that in the common tubular reactor.
nickel foam / monolithic microreactor / methanol / CO2 reduction
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山东省自然科学基金项目(ZR2020MB143)
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