还原氧化石墨烯/粘胶基钒酸铋光催化材料的制备及其性能  

Preparation and property of reduced graphene oxide/viscose-based BiVO_(4) photocatalyst

作　　者：钱佳琪 瞿建刚[1] 胡啸林[1] 毛庆辉[1,2] QIAN Jiaqi;QU Jian′gang;HU Xiaolin;MAO Qinghui(School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China;National Advanced Printing and Dyeing Technology Innovation Center, Taian, Shandong 271000, China)

机构地区：[1]南通大学纺织服装学院,江苏南通226019 [2]国家先进印染技术创新中心,山东泰安271000

出　　处：《纺织学报》2022年第6期100-106,共7页Journal of Textile Research

基　　金：南通市基础科学研究项目(JC2019007);生态纺织教育部重点实验室开放基金项目(KLE1708)。

摘　　要：针对钒酸铋(BiVO_(4))光催化效率低、难回收的缺点,利用硅烷偶联剂KH-560和氧化石墨烯(GO)依次对粘胶非织造布改性,再利用搅拌水热法在其表面生长BiVO_(4)制备还原氧化石墨烯(RGO)/粘胶基BiVO_(4)光催化材料。采用扫描电子显微镜、X射线衍射、X射线光电子能谱和紫外-可见吸收光谱对材料进行了表征,并研究了RGO/粘胶基BiVO_(4)材料的光催化活性、重复使用性能和光催化机制。结果表明:BiVO_(4)成功负载在RGO/粘胶非织造布表面,得到了RGO/粘胶基BiVO_(4)光催化材料;在1 kW氙灯照射下,90 min内对活性黑5脱色率达到95%以上,重复5次后仍达到92%以上;自由基捕捉实验表明,光生空穴、超氧自由基和羟基自由基参与了光化学反应,其中羟基自由基的作用最大。In order to overcome the disadvantages of low photocatalytic efficiency and recyclability of BiVO_(4),silane coupling agent KH-560 and graphene oxide(GO)were used to modify the viscose nonwoven fabrics,then BiVO_(4) was grown on its surface by stirring hydrothermal method to prepare reduced graphene oxide(RGO)/viscose-based BiVO_(4) photocatalyst.The materials as prepared were characterized by scanning electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy and ultraviolet visible absorption spectroscopy.The photocatalytic activity,reusability and photocatalytic mechanism of RGO/viscose based BiVO_(4) photocatalyst for C.I.Reactive Black 5 decolorization were studied.The results show that BiVO_(4) is successfully loaded on RGO/viscose nonwovens and consequently RGO/viscose-based BiVO_(4) photocatalytic materials are obtained.Under the irradiation of 1 kW xenon lamp,the decolorization rate can reach up to 95%in 90 min,and over 92%is preserved even after five recycles.Furthermore,free radical capture experiments show that photogenerated hole,superoxide radical and hydroxyl radical participate in the photocatalytic reaction,and among which the hydroxyl radical is the most important.

关 键 词：石墨烯 粘胶 钒酸铋 光催化 活性黑5 废水处理 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程] TB332[轻工技术与工程—纺织科学与工程]