本研究采用溶胶-凝胶法制备了B掺杂TiO2纳米粉体.采用X射线衍射(XRD)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、紫外可见漫反射光谱(UV-Vis)等测试手段对其进行了表征,以亚甲基蓝为模拟污染物,评价了不同热处理条件下的粉体在可见光下的光催化活性.结果表明:B掺杂对TiO2表面形貌没有明显影响,但抑制了TiO2晶粒的长大和TiO2由锐钛矿型向金红石型的转变;部分B以B2O3的形式存在,部分B掺入到TiO2晶格间隙形成B-O-Ti键;B掺杂未改变TiO2的吸收边带,且使得TiO2对可见光的吸收有所减弱;B掺杂能有效促进TiO2表面活性基团Ti-OH的生成,该基团能够有效捕获空穴,从而提高光催化活性;B掺杂TiO2粉体在650℃煅烧的催化活性最高,对亚甲基蓝的2h降解率比未掺杂TiO2提高16.51％.
参考文献
| [1] | 肖逸帆;柳松.二氧化硅改性二氧化钛光催化活性研究进展[J].无机盐工业,2007(9):5-8. |
| [2] | 唐泽华;胡兰青.铜、锌共掺杂二氧化钛薄膜的制备及光催化活性[J].硅酸盐通报,2015(4):1089-1094. |
| [3] | 张文杰;杨波.B掺杂TiO2光催化剂的制备和光催化性能[J].材料研究学报,2012(02):149-154. |
| [4] | 赵燕宁;刘岗;孙成华;李峰;逯高清;会成明.硼在纳米晶氧化钛中的掺杂状态[J].材料研究学报,2008(2):125-129. |
| [5] | Hexing Li;Jingxia Li;Yuning Huo.Highly Active TiO_2N Photocatalysts Prepared by Treating TiO_2 Precursors in NH_3/Ethanol Fluid under Supercritical Conditions[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,20064(4):1559-1565. |
| [6] | Chen D;Yang D;Wang Q;Jiang ZY.Effects of boron doping on photocatalytic activity and microstructure of titanium dioxide nanoparticles[J].Industrial & Engineering Chemistry Research,200612(12):4110-4116. |
| [7] | Xiaona Lu;Baozhu Tian;Feng Chen;Jinlong Zhang.Preparation of boron-doped TiO_2 films by autoclaved-sol method at low temperature and study on their photocatalytic activity[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,20101(1):111-116. |
| [8] | Wei Zhao;Wanhong Ma;Chuncheng Chen;Jincai Zhao;Zhigang Shuai.Efficient Degradation of Toxic Organic Pollutants with Ni_2O_3/TiO_(2-x)B_x under Visible Irradiation[J].Journal of the American Chemical Society,200415(15):4782-4783. |
| [9] | Lu YH;Zhou ZF;Sit P;Shen YG;Li KY;Chen H.X-Ray photoelectron spectroscopy characterization of reactively sputtered Ti-B-N thin films[J].Surface & Coatings Technology,20041(1):98-105. |
| [10] | Xiaobo Chen;Clemens Burda.Photoelectron Spectroscopic Investigation of Nitrogen-Doped Titania Nanoparticles[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,200440(40):15446-15449. |
| [11] | Wong MS;Chou HP;Yang TS.Reactively sputtered N-doped titanium oxide films as visible-light photocatalyst[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,20061/2(1/2):244-249. |
| [12] | Dupin JC.;Vinatier P.;Levasseur A.;Gonbeau D..Systematic XPS studies of metal oxides, hydroxides and peroxides[J].Physical chemistry chemical physics: PCCP,20006(6):1319-1324. |
| [13] | Fan Dong;Weirong Zhao;Zhongbiao Wu;Sen Guo.Band Structure And Visible Light Photocatalytic Activity Of Multi-type Nitrogen Doped Tio_2 Nanoparticles Prepared By Thermal Decomposition[J].Journal of hazardous materials,20092/3(2/3):763-770. |
| [14] | Adriana Zaleska;Ewelina Grabowska;Janusz W. Sobczak.Photocatalytic activity of boron-modified TiO2 under visible light: The effect of boron content, calcination temperature and TiO2 matrix[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20093/4(3/4):469-475. |
| [15] | 赵秀峰;张志红;孟宪锋;刘浪;贾殿赠.B掺杂TiO2/AC光催化剂的制备及活性[J].分子催化,2003(4):292-296. |
| [16] | Kyeong Youl Jung;Seung Bin Park;Son-Ki Ihm.Local structure and photocatalytic activity of B_2O_3-SiO_2/TiO_2 ternary mixed oxides prepared by sol-gel method[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20044(4):239-245. |
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%