Cu-MOF前驱法制备CuO-TiO_2及其光催化产氢性能  

Photocatalytic hydrogen production with CuO-TiO_2 catalyst prepared by Cu-MOF precursor method

作　　者：王萌[1] 徐律[1] 周燕南[1] 刘红[1] 黎军[1] 陆小华[1] 

机构地区：[1]南京工业大学材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2016年第2期88-93,124,共7页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重点基础研究发展计划(973计划)(2013CB733505;2013CB733501);国家自然科学基金(21136004;91334202);江苏省自然科学基金(BK2012421);教育部博士点专项科研基金(20123221120015)

摘　　要：利用Cu的有机骨架材料(Cu-MOF(Cu BTC))中金属离子高度有序的特性,基于高比表面的介孔TiO_2载体,通过煅烧前驱体Cu BTC-TiO_2复合物制备纳米负载型CuO-TiO_2催化剂。使用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X线衍射仪(XRD)、N2吸附-脱附、X线光电子能谱仪(XPS)和紫外-可见光吸收光谱仪(UV-Vis)对催化剂的形貌和结构进行表征,并以甲醇-水体系为气相光催化产氢评价体系。结果表明:通过MOF前驱法制备的CuO-TiO_2催化剂,平均产氢速率达到0.32 mmol/(g·h),在多次循环实验中产氢速率没有明显下降趋势,稳定性较好,明显优于通过沉积沉淀法制备的CuO-TiO_2催化剂。Based on the highly ordered Cu nodes well dispersed in Cu-containing metal-organic frameworks（ Cu-MOF（ CuBTC））,CuO-TiO_2 catalyst by the calcination of Cu BTC-TiO_2,supported on the mesoporous TiO_2 with high surface area was prepared. The catalyst was characterized by scanning electron microscope（ SEM）,transmission electron microscopy（ TEM）,X-ray powder diffraction（ XRD）,N2adsorption-desorption analysis,X-ray photoelectron spectroscopy（ XPS）, and UV-visible absorption spectrum（ UV-Vis）. Methanol aqueous solution was used as an evaluation system for gas-phase photocatalytic hydrogen production. Results showed that the CuO-TiO_2 catalyst prepared by MOF precursor method achieved higher hydrogen yield about 0. 32 mmol /（ g·h） and better stability compared with that prepared by deposition precipitation.

关 键 词：CuO-TiO2 Cu-MOF 介孔TIO2 光催化剂 产氢 

分 类 号：O646[理学—物理化学]