首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
新型可见光活性氧化钯/钒酸铋复合光催化剂的制备及其光催化性能
作者:戈磊 崔立山  
单位:中国石油大学北京材料科学与工程系 中国石油大学北京材料科学与工程系 北京102249 北京102249 
关键词:钒酸铋  光催化  可见光  甲基橙 
分类号:O643.3
出版年,卷(期):页码:2008,36(3):320-324
DOI:
摘要:

通过浸渍法制备了新型可见光活性的氧化钯(PdO)/钒酸铋(BiVO4)复合光催化剂。采用X射线衍射、扫描电子显微镜、X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)、紫外-可见吸收光谱等测试手段对复合光催化剂的物理和光学性质进行了表征。在可见光(λ>400nm)照射下考察了PdO/BiVO4样品降解甲基橙的光催化性能。结果表明:PdO/BiVO4光催化剂为单斜相结构,晶粒形貌呈十字花或球形。XPS结果显示:复合光催化剂中掺杂的钯(Pd)元素是以PdO的形式存在的。与纯BiVO4样品相比,复合光催化剂可见光降解甲基橙的活性显著增强。这种新型复合光催化剂的光催化性能提高的原因可能是由于催化剂中光生载流子的高效分离造成的。

how to cheat women who want to cheat wife cheat story
read read here link
My wife cheated on me why wives cheat on husbands reasons married men cheat
my husband cheated on me men who have affairs women who cheat on husband
abortion pill abortion pill abortion pill

Novel palladium oxide (PdO)/bismuth vanadate (BiVO4) visible light-induced composite photocatalysts were prepared by the impregnation method. The physical and optical properties of the composite photocatalysts were characterized by X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible absorption spectroscopy. The photocatalytic performance of the PdO/BiVO4 samples was evaluated by decolorization of methyl orange under visible light (λ>400 nm) irradiation. The results indicate that the PdO/BiVO4 photocatalysts are monoclinic phase and consist of quatrefoil-like and spherical particles. The XPS results reveal that the doped Pd species exists in the form of PdO. The composite samples show superior visible light-induced photocatalytic degradation of methyl orange compared to the pure BiVO4 sample. The efficient separation of photo-generated carriers is considered to be the possible reason for the enhanced photocatalytic performance of these composite photocatalysts.

read dating a married woman reasons wives cheat on their husbands
my husband cheated on me redirect women who cheat on husband
open open My husband cheated on me
sumatriptan side effects sumatriptan side effects sumatriptan side effects
基金项目:
博士点基金项目(20050425002)资助项目
作者简介:
women want men signs of unfaithful husband how do i know if my wife cheated
online women that cheat with married men married woman looking to cheat
sumatriptan side effects sumatriptan side effects sumatriptan side effects
参考文献:

[1]FUJISHIMA A,HONDA K.Electrochemical photolysis of water a semiconductor electrode[J].Nature,1972,238(5358):37-38. [2]戈磊,徐明霞,孙明.低温制备纳米晶TiO2薄膜及其光催化性能[J].硅酸盐学报,2006,34(5):536-540.GE Lei,XU Mingxia,SUN Ming.J Chin Ceram Soc(in Chinese),2006,33(5):536-540. [3]WU L,YU J C,FU X Z.Characterization and photocatalytic mecha-nism of nanosized CdS coupled TiO2nanocrystals under visible light irradiation[J].J Mol Catal A Chem,2005,244:25-32. [4]GE L,XU MX,FANG HB.Synthesis of novel photocatalytic InVO4-TiO2thin films with visible light photoactivity[J].Mater Lett,2007,61(1):63-66. [5]SHEN M,W Z Y,HUANG H,et al.Carbon-doped anatase TiO2ob-tained from TiC for photocatalysis under visible light irradiation[J].Mater Lett,2006,60:693-697. [6]GE L,XU MX,FANG HB.Synthesis and characterization of the Pd/InVO4-TiO2co-doped thin films with visible light photocatalytic activities[J].Appl Surf Sci,2006,253(4):2257-2263. [7]ZHAO X,XU T G,YAO W Q,et al.Photoelectrocatalytic degradation of4-chlorophenol at Bi2WO6nanoflake film electrode under visible light irradiation[J].Appl Catal B Environ,2007,72(1-2):92-97. [8]WANG Y,CAO G Z.Synthesis and electrochemical properties of InVO4nanotube arrays[J].J Mater Chem,2007,17(9):894-899. [9]TANG J W,ZOU Z G,KATAGIRI M,et al.Photocatalytic degradation of MB on MIn2O4(M=alkali earth metal)under visible light:effects of crystal and electronic structure on the photocatalytic activity[J].Catal Today,2004,93(5):885-889. [10]YIN J,ZOU Z G,YE J H.Photophysical and photocatalytic properties of new photocatalysts MCrO4(M=Sr,Ba)[J].Chem Phys Lett,2003,378(1-2):24-28. [11]ZHANG X,AI Z H,JIA F L,et al.Selective synthesis and visible-light photocatalytic activities of BiVO4with different crystalline phases[J].Mater Chem Phys,2007,103:162-167. [12]LONG M C,CAI W M,CAI J,et al.Efficient photocatalytic degrada-tion of phenol over Co3O4/BiVO4composite under visible light irra-diation[J].J Phys Chem B,2006,110:20211-20216. [13]ZHOU L,WANG W Z,LIU S W,et al.A sonochemical route to visible-light-driven high-activity BiVO4photocatalyst[J].J Mol Catal A Chem,2006,252:120-124. [14]KOHTANI S,TOMOHIRO M,TOKUMURA,et al.Photooxidation reactions of polycyclic aromatic hydrocarbons over pure and Ag-loaded BiVO4photocatalysts[J].Appl Catal B Environ,2005,58(3-4):265-272. [15]KOHTANI S,KOSHIKO M,KUDO A,et al.Photodegradation of4-alkylphenols using BiVO4photocatalyst under irradiation with visi-ble light from a solar simulator[J].Appl Catal B Environ,2003,46(3):573-586.

women want men signs of unfaithful husband how do i know if my wife cheated
open reasons why married men cheat My husband cheated on me
cialis coupon cialis coupon cialis coupon
sumatriptan side effects sumatriptan side effects sumatriptan side effects
bystolic copay card click bystolic coupon voucher
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com