赵鑫;翟永佳;林朝阳;尹妮;

• 1:苏州科技大学化学生物与材料工程学院江苏省环境功能材料重点实验室

摘要(Abstract)：

为提高纳米Ti O2的可见光催化活性,采用溶胶-凝胶法制备了一种掺杂型纳米可见光催化剂Co/N/S/Ti O2,并用正交试验法对其制备工艺进行了优化;用紫外-可见漫反射光谱(DRS)、X射线衍射(XRD)、透射电子显微镜(TEM)等方法对其吸光性能和结构进行了表征;以活性艳蓝X-BR溶液为光降解模型,对其可见光催化活性进行了评价,并与Degussa P25进行对比。结果表明,在Co∶N∶S∶Ti物质的量比为0.15∶0.2∶0.2∶1、煅烧温度为400℃、煅烧时间为1h的最佳制备条件下,所制得的Co/N/S/Ti O2光催化剂为单一锐钛矿晶相,平均粒径为8¹0 nm,比表面积约为192.19 m2/g。Co/N/S/Ti O2光催化剂吸收边可红移至近900 nm,可见光催化活性突出,在纯粹可见光(λ>400 nm)下光解活性艳蓝X-BR溶液120 min的降解率可达91.5%,与Degussa P25相比,其可见光催化活性提高了80.1%,且重复使用性能良好。

关键词(KeyWords)： 环境科学技术基础学科;光催化;共掺杂纳米TiO2;可见光

Abstract:

Keywords:

基金项目(Foundation): 住建部科研基金项目(2008-K7-29)

作者(Authors): 赵鑫;翟永佳;林朝阳;尹妮;

参考文献(References)：

• [1]ANPO M,TAKEUCHI M.The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation[J].Journal of Catalysis,2003,216(1/2):505-516.
• [2]CHEN Xiaoyun(陈孝云),LU Dongfang(陆东芳),LIN Shufang(林淑芳).Preparation and properties of sulfur-doped visible-light response S-Ti O2/Si O2photocatalyst[J].Chinese Journal of Catalysis(催化学报),2012,33(2):993-999.
• [3]WANG Zhenhua(王振华),ZHU Chenfu(主沉浮),CAI Yuanxing(蔡元兴),et al.Research progress in mechanism and preparation of doped modification of nanometer titanium dioxide[J].Materials Reviews(材料导报),2006,20(11):61-63.
• [4]GELOVER S,MONDRAGO’N P,JIME’NEZ A.Titanium dioxide sol-gel deposited over glass and its application as a photocatalyst for water decontamination[J].Journal of Photochemistry and Photobiology A:Chemistry,2004,165(1/2/3):241-246.
• [5]REN Ling(任凌),YANG Fada(杨发达),ZHANG Yuanming(张渊明),et al.Preparation and visible-light responsive photocatalytic activity of N-doped Ti O2photocatalyst[J].Chinese Journal of Inorganic Chemistry(无机化学学报),2008,24(4):541-546.
• [6]CHE Haiyan(车海燕).Preparation and doped modification of nano-Ti O2photocatalyst(纳米二氧化钛光催化剂的制备与掺杂改性研究)[D].Shanghai:East China Normal University,2006.
• [7]ZHU Pengfei(朱鹏飞),LIU Mei(刘梅),LI Liming(李黎明),et al.Photocatalytic degradation of direct sky blue dye by Cu-Fe codoped Ti O2/bentonite photocatalyst[J].Non-Metallic Mines(非金属矿),2012,35(1):55-57.
• [8]LUAN Yong(栾勇),FU Pingfeng(傅平丰),DAI Xuegang(戴学刚),et al.Effects of metal ion dopants on Ti O2photocatalysis[J].Progress in Chemistry(化学进展),2004,16(5):739-746.
• [9]ASAHI R,MORIKAWA T,OHWAKI T,et al.Visible-light photocatalysis in nitrogen-doped titanium oxides[J].Science,2001,293(13):269-271.
• [10]OHNO T,AKIYOSHI M,UMEBAYASHI T,et al.Preparation of S-doped Ti O2photocatalysts and their photocatalytic activities under visible light[J].Applied Catalysis A,2004,265(1):115-121.
• [11]LIU Shouxin(刘守新),CHEN Xiaoyun(陈孝云),CHEN Xi(陈曦).Preparation of N-doped visible-light response nanosize Ti O2photocatalyst using the acid-catalyzed hydrolysis method[J].Chinese Journal of Catalysis(催化学报),2006,27(8):697-702.
• [12]ZHAO W,MA W,CHEN C,et al.Efficient degradation of toxic organic pollutants with Ni2O3/Ti O2-xBxunder visible irradiation[J].Journal of the American Chemical Society,2004,126(15):4782-4783.
• [13]SUN Hongqi(孙红旗),CHENG Youping(程友萍),JIN Wanqin(金万勤),et a1.Preparation of lanthanum and carbon co-doped Ti O2and photocatalysis under visible irradiation[J].Journal of Chemical Industry and Engineering(China)(化工学报),2006,57(7):1570-1574.
• [14]WEI Fengyu(魏凤玉),ZHU Tong(祝童).Preparation and photocatalytic property of S and Fe co-doped Ti O2nanoparticles[J].Applied Chemical Industry(应用化工),2007,36(5):421-424.
• [15]AO Y H,XU J J,FU D G,et a1.Synthesis of C,N,S-tridoped mesoporous titania with enhanced visible light-induced photocatalytic activity[J].Microporous and Mesoporous Materials,2009,122(1/2/3):1-6.
• [16]L¨U Kangle,ZUO Housong,SUN Jie,et a1.Bi,C and N codoped Ti O2nanoparticles[J].Journal of Hazardous Materials,2009,161(1):396-400.
• [17]XU A W,GAO Y,LIU H Q.The preparation,characterization and their photo-catalytic activities of rareearth-doped Ti O2nanoparticles[J].Catalysis,2002,207:151-157.
• [18]CAO Peisen(曹沛森),XU Pu(许璞),WANG Yubao(王玉宝),et a1.Research progress on modification and application of nano-Ti O2photocatalyst[J].Micronanoelectronic Technology(微纳电子技术),2008,45(3):145-151.
• [19]RODRIGUEZ-TALAVERAA R,VARGAS S,AARROYOMURILLO R,et al.Modification of the phase transition temperatures in titania doped with various cations[J].Journal of Materials Research,1997,12(2):439-442.
• [20]SUN Chaoxiong(孙超雄),CHEN Menglin(陈孟林),HE Xingcun(何星存),et al.Preparation of Fe-doped rutile Ti O2and study of the evaluation approach to the visible light photocatalytic properties[J].Journal of Safety and Environment(安全与环境学报),2012,12(1):37-39.