金纳米颗粒的绿色合成及光催化性能的研究  

Green Synthesis of Gold Nanoparticles and Their Photocatalytic Properties

作　　者：刘茜茜 孙丽[1] LIU Xi-xi;SUN Li(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院

出　　处：《广州化学》2019年第4期56-60,共5页Guangzhou Chemistry

摘　　要：以八月札植物提取液为还原剂,绿色合成了平均粒径为19 nm的类球形、多晶金纳米颗粒。通过紫外-可见分光光度计(UV-Vis)、透射电子显微镜(TEM)、选区电子衍射(SAED)、X-射线衍射(XRD)和X-射线能谱(XPS)分析,对金纳米颗粒的形貌、成分及微观结构进行表征。基于4-硝基苯酚(4-NP)的降解,考察了金纳米颗粒的光催化性能。在可见光的照射下,4-NP降解的动力学速率常数最大可达0.42 min^-1。可见,八月札制备的金纳米颗粒具有优异的光催化性能。The quasi-spherical gold nanoparticles(Au NPs)with an average diameter of 19 nm were synthesized using the akebia trifoliata koidz extracts as reducing agent.Based on the ultraviolet-visible spectrophotometer(UV-Vis),transmission electron microscope(TEM),selective electron diffraction(SAED),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)analyses,the morphology,composition and micro-structure of Au NPs were characterized.For the 4-nitrophenol(4-NP)degradation,the photocatalytic performances of Au NPs were investigated.Under visible light irradiation,the kinetic rate constant of the 4-NP degradation could reach up to the maximum value of 0.42 min^-1.Obviously,as-synthesized Au NPs have an excellent photocatalytic performance.

关 键 词：八月札 绿色合成 金纳米颗粒 4-硝基苯酚 

分 类 号：X505[环境科学与工程—环境工程]