徐梅,李莹影,王佳,宋贤良,叶盛英

• 1:华南农业大学食品学院

摘要(Abstract)：

通过高温固相法、微乳液法、水热法、醇水混合溶剂热法、和乙二醇溶剂热法制备出Bi_2WO_6光催化剂。采用X射线衍射(XRD)、场发射扫描电镜(SEM)、紫外-可见吸收光谱(UV-Vis)对样品的晶体结构、微观形貌、吸光性能进行表征,并考察其在可见光下降解乙烯的光催化性能。结果表明:制备方法对Bi_2WO_6光催化剂的微观结构和光催化性能都有明显的影响,其中高温固相法所得样品的颗粒粒径最大且易团聚,光催化活性最低,对乙烯的降解率仅为5.85%。乙二醇溶剂热法制备的Bi_2WO_6样品的平均粒径约为100~200 nm,禁带宽度为2.90 eV,对乙烯的降解率最高,为13.82%,比高温固相法提高了136.24%。

关键词(KeyWords)： Bi_2WO_6;制备方法;微观形貌;可见光催化;乙烯降解

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31371855);; 广州市科技项目(2014J4100150)

作者(Author): 徐梅,李莹影,王佳,宋贤良,叶盛英

参考文献(References)：

• [1]LIN Yan(林燕).Research and application on efficient ethylene removal agent which is fit for fruit and vegetables distribution(适合果蔬流通高效乙烯脱除剂的研究及其应用)[D].Tianjin(天津):Tianjin University of Science&Technology(天津科技大学),2010.
• [2]ZHANG Yong-chun(张永春),ZHOU Jin-xia(周锦霞),GUO Xin-wen(郭新闻),et al.Mechanism of physical adsorption and chemical adsorption of ethylene(乙烯的物理吸附机理和化学吸附机理)[J].Journal of Chemical Industry and Engineering(化工学报),2004,55(11):1900-1903.
• [3]CAI Lu-yun(蔡路昀),LU Yan-fang(吕艳芳),LI Xue-peng(李学鹏),et al.Research progress in application of complex biological preservation technology in the fresh food(复合生物保鲜技术及其在生鲜食品中的应用研究进展)[J].The Food Industry Science and Technology(食品工业科技),2014,35(10):380-384.
• [4]Lin X,Yu L L,Yan L N,et al.Visible light photocatalytic activity of Bi VO4 particles with different morphologies[J].Solid State Sciences,2014,32:61-66.
• [5]Wang P,Wang J,Wang X F,et al.One-step synthesis of easy-recycling Ti O2-r GO nanocomposite photocatalysts with enhanced photocatalytic activity[J].Applied Catalysis B:Environmental,2013,132:452-459.
• [6]GUO Dan(郭丹),WANG Ping(王萍),ZHENG Qi-ying(郑琪颖),et al.One-step synthesis of flower-like Bi2WO6-r GO composite photocatalysts(一步法制备石墨烯复合花状钨酸铋光催化剂)[J].Journal of Inorganic Materials(无机材料学报),2014,29(11):1193-1198.
• [7]GE Lei(戈磊),ZHANG Xian-hua(张宪华).Novel visible light driven Bi2WO6 photocatalysis synthesized via the microemulsion process and its photocatalytic performance(微乳液法合成新型可见光催化剂Bi2WO6及其光催化性能)[J].Chinese Ceramic Society(硅酸盐学报),2010,38(3):457-462.
• [8]Sun S,Wang W,Xu J,et al.Highly efficient photocatalytic oxidation of phenol over ordered microsoporous Bi2WO6[J].Applied Catalysis B:Environmental,2011,106(3-4):559-564.
• [9]Zhou H,Peng Y,Qin S.Ag@Bi2WO6 composites with high visible-light-driven photocatalytic activities prepared in UV light irradiation[J].Chinese Journal of Chemistry,2011,29(11):2345-2349.
• [10]Huang Y,Ai Z,Ho W,et al.Ultrasonic spray pyrolysis synthesis of porous Bi2WO6 Microspheres and their visible-light-induced photocatalytic removal of NO[J].The Journal of Physical Chemistry C,2010,114(14):6342-6349.
• [11]AI Zhu-yu(艾珠玉),ZHAO Wei-rong(赵伟荣),DAI Jiu-song(戴久松),et al.Modification of photocatalysts for H2 evolution from water photocatalyzation(光催化分解水制氢催化剂的修饰与改性)[J].Journal of Chemical Engineering of Chinese Universities(高校化学工程学报),2016,30(3):509-516.
• [12]CHENG Zhuo-wei(成卓韦),ZHOU Ling-jun(周灵俊),YU Jian-ming(於建明),et al.Mechanism study on gaseousα-pinenephotocatalyzed by lanthanum-doped titanium dioxide nanotubes(镧掺杂Ti O2纳米管对α-蒎烯光催化性能及催化机理研究)[J].Journal of Chemical Engineering of Chinese Universities(高校化学工程学报),2015,29(2):320-327.
• [13]XING Guang-jian(邢光建),LI Yu-mei(李钰梅),ZHAO Zheng(赵铮).et al.Preparation and photocatalytic properties of bismuth tungsten oxide nanomaterials with different morphologies(不同形貌的钨酸铋纳米材料的制备及其光催化性能)[J].Journal of Synthetic Crystals(人工晶体学报),2010,39(5):1265-1271.
• [14]Zhu Z F,Yan Y,Li J Q.One-step synthesis of flower-like WO3/Bi2WO6 heterojunction with enhanced visible light photocatalytic activity[J].Materials Science,2016,51(4):2112-2120.
• [15]Kudo A,Hijii S.H2 or O2 evolution from aqueous solutions on layered oxide photocatalysts consisting of with 6s configuration and O2 transition metal irons[J].Chemistry Letters,1999,28(10):1103-1104.
• [16]Liu Y M,Ding Z W,LüH,et al.Hydrothermal synthesis of hierarchical flower-like Bi2WO6 microspheres with enhanced visible-light photoactivity[J].Materials Letters,2015(157):158-162.
• [17]Liu L,Wang Y F,An W J,et al.Photocatalytic activity of Pb S quantum dots sensitized flower-like Bi2WO6 for degradation of Rhodamine B under visible light irradiation[J].Molecular Catalysis A:Chemical,2014,394:309-315.
• [18]XU Hui(徐惠),XU Zeng-hui(徐增辉),LIU Chao(刘超),et al.Preparation and antibacterial activity of PANI/Ag-Ti O2 fibrous nanocomposites(PANI/Ag-Ti O2纳米纤维复合材料的制备及其抗菌性能研究)[J].Rare Metal Materials and Engineering(稀有金属材料与工程),2011,40(4):749-752.
• [19]ZHANG Jiang(张江).Preparation,characterization and their photocatalytic performances of modified Bi2WO6 photocatalysts(改性Bi2WO6的制备、表征及其光催化性能)[D].Beijing(北京):Tsinghua University(清华大学),2012.
• [20]Zhao X B,Ji X H,Zhang Y H,et al.Effect of solvent on the microstructures of nanostructured Bi2Te3 prepared by solvothermal synthesis[J].Alloys and Compounds,2004,368(1-2):349-352.
• [21]Wang Q Q,Xu G,Han G R.Solvothermal synthesis and characterization of uniform Cds nanowires in high yield[J].Solid State Chemistry,2005,178(9):2680-2685.
• [22]Wang K H,Tsai H H,Hsieh Y H.The kinetics of photocatalytic degradation of trichloroethylene in gas phase over Ti O2 supported on glass bead[J].Applied Catalysis B:Environmental,1998,17(4):313-320.
• [23]Dionysiou D,Suidan M T,Bekou E,et al.Effect of ionic strength and hydrogen peroxide on the photocatalytic degradation of4-chlorobenzoic acid in water[J].Applied Catalysis B:Environmental,2000,26(3):153-171.
• [24]Zhou Y,Tian Z P,Zhao Z Y.High-yield synthesis of ultrathin and uniform Bi2WO6 square nanoplates benefitting from photocatalytic reduction of CO2[J].Applied Catalysis B:Environmental,2011,3(9):3594-3601.
• [25]YE Sheng-ying(叶盛英),HE Ming-shu(贺明书),CEN Chao-ping(岑超平),et al.Application of gas-solid heterogeneous photocatalytic reaction of nanoparticle Ti O2 to ethylene degradation(Ti O2纳米粒子气固相光催化降解乙烯初探)[J].Transactions of the Chinese Society of Agricultural Engineering(农业工程学报),2005,21(5):166-169.