以十四烷基三甲基溴化铵(TTAB)为模板,采用水热合成法可控制备BiVO4微晶.利用X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、比表面测定仪和紫外可见漫反射(UV-Vis DRS)等技术,表征了水热反应前驱液的pH值(pH=1.5-9)对BiVO4的晶体结构、形貌、比表面积和光学性能的影响,并在可见光照射下考察了BiVO4样品对罗丹明B的光催化降解活性.结果表明,随着pH值的增大,所得产物由单斜晶系向单斜晶系与四方晶系的混晶转变,且形貌由多面体向多孔微球转变.当pH为5～7时,所制备的BiVO4样品具有独特的形貌、较大的比表面积和良好的多孔结构,表现出优越的光催化活性,对罗丹明B降解率可高达90.4％..
参考文献
| [1] | 任泉霖,刘霞,周红珍,徐鑫磊,张永炬,霍颜秋,郭仁青.Bi2O3/BiOCl异质复合材料的制备及其光催化性能[J].材料科学与工程学报,2014(05):732-735. |
| [2] | 张元广,陈友存.纳米TiO2微球的制备及光催化性能研究[J].材料科学与工程学报,2003(01):60-63. |
| [3] | Shenawi-Khalila S,Uvarovb V,Menesa E,et al .New efficient visible light photocatalyst based on heterojunction of BiOCl-bismuth oxyhydrate[J].Applied Catalysis A:General,2012,413 |
| [4] | Shang M,Wang W Z,Zhou L,et al .Nanosized BiVO4 with high visible-light-induced photocatalytic activity:Ultrasonicassisted synthesis and protective effect of surfactant[J].Journal of Hazardous Materials,2009,172 |
| [5] | Han L,Hu P,Xu Z K,et al .Electrodeposition and photoelect rochemical properties of p-type BiOIα Cl1-α nanoplatelet thin films[J].Electrochimica Acta,2014,115 |
| [6] | 姜勇,张平,刘祖武.高活性多孔纳米TiO2的制备及协同光催化作用机理的探讨[J].材料科学与工程学报,2004(04):584-587. |
| [7] | Sarkar S,Chattopadhyay K K .Visible light photocatalysis and electron emission from porous hollow spherical BiVO4 nanostructures synthesized by a novel route[J].Physica E,2014,58 |
| [8] | Lai H F,Chen C C,Chang Y K,et al .Efficient photocatalytic degradation of thiobencarb over BiVO4 driven by visible light:Parameter and reaction pathway investigations[J].Separation and Purification Technology,2014,122 |
| [9] | Harada H,Hosoki C,Kudo A .Overall water splitting by sonophotocatalytic reaction:the role of powdered photocatalyst and an attempt to decompose water using a visible-light sensitive photocatalyst[J].Journal of Photochemistry and Photobiology A:Chemistry,2001,141 |
| [10] | Lin X,Li H J,Yu L L,et al .Efficient removal rhodamine B over hydrothermally synthesized fishbone like BiVO4[J].Materials Research Bulletin,2013,48 |
| [11] | Ma L,Li W H,Luo J H .Solvothermal synthesis and characterization of well-dispersed monoclinic olive-like BiVO4 aggregates[J].Materials Letters,2013,102 |
| [12] | Zhu Z F,Zhang L,Li J Q,et al .Synthesis and photocatalytic behavior of BiVO4 with decahedral structure[J].Ceramics International,2013,39 |
| [13] | Wang W Z,Huang X W,Wu S,et al .Preparation of p-n junction Cu2O/BiVO4 heterogeneous nanostructures with enhanced visible-light photocatalytic activity[J].Applied Catalysis B:Environmental,2013,134 |
| [14] | Cao J,Zhou C C,Lin H L,et al .Surface modification of m-BiVO4 with wide band-gap semiconductor BiOCl to largely improve the visible light induced photocatalytic activity[J].Applied Surface Science,2013,284 |
| [15] | Jiang J G,Wang M,Li R,et al .Fabricating CdS/BiVO4 and BiVO4/CdS heterostructured film photoelectrodes for photoelectrochemical applications[J].International Journal of Hydrogen Energy,2013,38 |
| [16] | Zhao Z X,Dai H X,Deng J G,et al .Enhanced visible-light photocatalytic activities of porous olive-shaped sulfur-doped BiVO4-supported cobalt oxides[J].Solid State Sciences,2013,18 |
| [17] | Wang M,Liu Q,Che Y S,et al .Characterization and photocatalytic properties of N-doped BiVO4 synthesized via a solgel method[J].Journal of Alloys and Compounds,2013,548 |
| [18] | Li J Q,Guo Z Y,Liu H,et al .Two-step hydrothermal process for synthesis of F-doped BiVO4 spheres with enhanced photocatalytic activity[J].Journal of Alloys and Compounds,2013,581 |
| [19] | Gao X M,Fu F,Li W H .Photocatalytic degradation of phenol over Cu loading BiVO4 metal composite oxides under visible light irradiation[J].Physica B,2013,412 |
| [20] | Gao X M,Fu F,Zhang L P,et al .The preparation of Ag-BiVO4 metal composite oxides and its application in efficient photocatalytic oxidative thiophene[J].Physica B,2013,419 |
| [21] | Zhu G Q,Hojamberdiev M,Que W X,et al .Hydrothermal synthesis and visible-light photocatalytic activity of porous peanut-like BiVO4 and BiVO4/Fe3O4 submicron structures[J].Ceramics International,2013,39 |
| [22] | Lai H F,Chen C C,Chang Y K,et al .A novel calcined Bi2WO6/BiVO4 heterojunction photocatalyst with highly enhanced photocatalytic activity[J].Chemical Engineering Journal,2014,236 |
| [23] | 龙金鑫,张莉莉,周守勇,赵宜江,姚超,汪信.水热合成单斜晶系BiVO_4可见光催化剂及其性能[J].材料科学与工程学报,2012(04):600-605. |
| [24] | Sun W T,Xie M Z,Jing L Q,et al .Synthesis of large surface area nano-sized BiVO4 by an EDTA-modified hydrothermal process and its enhanced visible photocatalytic activity[J].Journal of Solid State Chemistry,2011,184 |
| [25] | Dong L,Zhang X F,Dong X L,et al .Structuring porous "sponge-like " BiVO4 film for efficient photocatalysis under visible light illumination[J].Journal of Colloid and Interface Science,2013,393 |
| [26] | Lai H F,Chen C C,Chang Y K,et al .Bismuth vanadate hollow spheres:Bubble template synthesis and enhanced photocatalytic properties for photodegradation[J].Applied Catalysis B:Environmental,2013,132 |
| [27] | Yan Y L,Wang J,Lu Z X,et al .Influence of TTAB on morphology and photoluminescence of GdVO4:Eu3+ powders in a wide pH range[J].Powder Technology,2013,249 |
| [28] | He Y,Zhu Y F,Wu N Z .Synthesis of nanosized NaTaO3 in low temperature and its photocatalytic performance[J].Journal of Solid State Chemistry,2004,177(11):3868~3872.,2004. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%