光电催化协同还原CO_2和氧化有机污染物  

Photo-electrochemical synergetic reduction of CO_2 and oxidation of organic pollutants

作　　者：崔莹莹 崔丽 崔玫瑰 杨培青 杨铁江 李贵生[3] 李和兴 CUI Ying-ying1, CUI Li2, CUI Mei-gui3, YANG Pei-qing4, YANG Tie-jiang1, LI Gui-sheng3, LI He-xing5(1.Shangdong Zhongkuang Group Co.LTD, Yantai 265401, China;2.Anqing Normal University, Anqing 246011, China;3.Shanghai Normal University, Shanghai 200234, China; 4.Qiqihar University, Qiqihar 161006, China; 5.Shanghai University of Electric Power, Shanghai 200090, Chin)

机构地区：[1]山东中矿集团有限公司,山东烟台265401 [2]安庆师范大学,安徽安庆246011 [3]上海师范大学,上海200234 [4]齐齐哈尔大学,黑龙江齐齐哈尔161006 [5]上海电力学院,上海200090

出　　处：《中国环境科学》2018年第6期2075-2081,共7页China Environmental Science

基　　金：国家自然科学基金资助项目(21207090)

摘　　要：随着大气中CO_2含量的上升和化石燃料储量的枯竭,人们越来越关注全球气候和未来能源供应的问题.那么利用丰富的太阳能将CO_2转化为诸如甲烷或甲酸的燃料可以同时解决这两个问题,并且提供了一种方便的能量储存手段.本文采用电沉积的方法在泡沫Ni上生长出高度有序的ZnO纳米片阵列,溶剂热合成将UIO-66-NH_2嫁接到Zn O上,得到催化剂UIO-66-NH_2-ZnO-Ni.结果表明:Zn O对称生长,UIO-66-NH_2均匀修饰在其表面,能够很好的吸附CO_2,使得CO_2进入孔道内,减少析氢反应.同时发现该催化剂具有优良的光电催化还原性能,光电催化还原CO_2的主要生成产物为甲酸.甲酸在3h含量达到30.98μmol.Rising atmospheric levels of carbon dioxide and the depletion of fossil fuel reserves raised serious concerns about the ensuing effects on the global climate and future energy supply. Utilized the abundant solar energy to convert CO2 into fuels such as methane or formic acid, which could address both problems simultaneously as well as provide a convenient means of energy stroage. In this paper, good performance of UIO-66-NH2-Zn O-Ni catalyst was obtained through vertical aligned Zn O nanosheets arrays grown on the Ni foam by constant voltage deposition method followed by UIO-66-NH2 grafted into Zn O by solvent-thermal method. It turned out that the symmetrical Zn O growed from all directions on Ni foam and then modified by UIO-66-NH2 at the surface properly from the SEM images. CO2 could be absorbed into the pores easily because of the high affinity of UIO-66-NH2 which reduced the hydrogen evolution ability successfully. The catalyst also had excellent photoelectron-catalytic reduction performance and the major product was formic acid. The highest yield of formic acid was 30.98μmol in three hours.

关 键 词：恒电位沉积 CO2 UIO-66-NH2 光电催化 甲酸 

分 类 号：X701.7[环境科学与工程—环境工程]