纤维素基TiO_(2)复合材料的制备及降解苯酚性能  

Preparation and degradation phenol performance of cellulose-based TiO_(2)composite

作　　者：王诗雨 薛珊 杨涛[1] 何敏君 唐璇[1] 成西涛 WANG Shi-yu;XUE Shan;YANG Tao;HE Min-jun;TANG Xuan;CHENG Xi-tao(College of Chemistry and Chemical Engineering,Xi’an Shiyou University,Xi’an 710065,China;Shaanxi Chemical Industry Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]陕西化工研究院有限公司,陕西西安710054

出　　处：《应用化工》2022年第5期1335-1340,共6页Applied Chemical Industry

基　　金：陕西省重点研发计划项目(2019SF-263)。

摘　　要：采用一步水热法,以纳米微晶纤维素(NCC)为基材,以尿素、氧化石墨烯(GO)为前驱体,制备系列TiO_(2)复合催化材料,采用XRD、FTIR、SEM、DRS等进行表征,以苯酚溶液为目标降解污染物,考察其在可见光照射下的催化活性,研究了反应条件及掺杂量对复合材料性能的影响。结果表明,NCC与TiO_(2)之间为化学键合,且NCC可促进复合材料分散性能的提高;N和石墨烯的进一步掺杂使材料禁带宽度变窄,吸收边带发生红移,提高了材料在可见光区的吸收,光催化活性增强。在蓝光照射下,TiO_(2)/NCC、N-TiO_(2)/NCC、N-TiO_(2)/NCC-rGO可分别达到37.82%,55.43%,77.3%的苯酚降解率。A series of TiO_(2)composite catalytic materials were prepared by the one-step hydrothermal method,using nanocrystalline cellulose(NCC)as the substrate,and urea and graphene oxide(GO)as precursors,use XRD,FTIR,SEM,DRS and other means to characterize.The phenol solution was taken as the target to degrade pollutants,and its catalytic activity under blue light irradiation was investigated.The effect of reaction conditions and doping amount on the properties of composite materials was studied.The results show that there is a chemical bond between NCC and TiO_(2),and NCC can promote the improvement of the dispersion performance of the composite;the further doping of N and graphene narrows the material forbidden band width,and the absorption sideband has a red shift,which improves the material absorption in the visible light region enhances the photocatalytic activity.Under blue light irradiation,TiO_(2)/NCC,N-TiO_(2)/NCC,N-TiO_(2)/NCC-rGO can reach phenol degradation rate of 37.82%,55.43%,and 77.3%,respectively.

关 键 词：纳米微晶纤维素 二氧化钛 光催化 苯酚 

分 类 号：TQ426.6[化学工程]