|
|
- 2016
N与La共掺杂纳米TiO2/电气石复合材料的制备及其光催化性能
|
Abstract:
采用超声辅助溶胶-凝胶法,以钛酸丁酯为原料,尿素为N源,硝酸镧为La源,制备了N与La共掺杂纳米TiO2/电气石复合材料。采用XRD、UV-Vis、SEM-EDS和XPS对复合材料的结构和性能进行了表征。以2,4,6-三硝基甲苯作为目标污染物,考察了N与La共掺杂纳米TiO2/电气石复合材料的光催化活性及再生利用性能。结果表明:N与La共掺杂并负载电气石后,两者协同作用使TiO2晶粒更加细化,光吸收范围向可见光区拓展,N与La共掺杂纳米TiO2/电气石复合材料具有良好的光催化活性和再生利用性能,且在模拟可见光照射条件下对2,4,6-三硝基甲苯具有良好的去除效果。 Using Ti(OC4H9)4 as raw material, CO(NH2)2 as N source, La(NO3)3·6H2O as La source, the N and La co-doped nano TiO2/tourmaline composites were synthesized via ultrasonic assisted sol-gel method. The structure and performance of composites were characterized by XRD, UV-Vis, SEM-EDS and XPS. The photocatalytic activity and recycling performance of N and La co-doped nano TiO2/tourmaline composites were evaluated with 2, 4, 6-trinitrotoluene as target pollutant. The results show that TiO2 grain sizes refine more and light abstraction width expands to visible region by the synergetic effect of N and La co-doped, and tourmaline loaded. N and La co-doped nano TiO2/tourmaline composites have good photocatalytic activity and recycling performance.The removal effect of 2, 4, 6-trinitrotoluene is good under the condition of simulating visible light irradiation. 重庆市自然科学基金(CSTC2008BB7139)
| [1] | NAKATA K, FUJISHIMA A. TiO2 photocatalysis:Design and applications[J]. Journal of Photochemistry and Photobiology C Photochemistry Reviews, 2012, 13(3):169-189. |
| [2] | 熊晶晶, 李可心, 黄黎明, 等. 介孔电气石/TiO2复合材料的制备及其模拟太阳光光催化性能[J]. 复合材料学报, 2014, 31(6):1481-1488. XIONG J J, LI K X, HUANG L M, et al. Preparation of mesoporous tourmaline/TiO2 composites and their simulated sunlight photocatalytic activity[J]. Acta Materiae Compositae Sinica, 2014, 31(6):1481-1488(in Chinese). |
| [3] | CHEN X B, MAO S S. Titanium dioxide nanomaterials:Synthesis, properties, modifications, and applications[J]. Chemical Reviews, 2007, 107(7):2891-2959. |
| [4] | 王勇, 张昊, 张军, 等. 纳米TiO2/再生纤维素复合薄膜的制备及光催化性能[J]. 复合材料学报, 2007, 24(3):35-39. WANG Y, ZHANG H, ZHANG J, et al. Preparation and photocatalytic activity of nano-TiO2/regenerated cellulose composite films[J]. Acta Materiae Compositae Sinica, 2007, 24(3):35-39(in Chinese). |
| [5] | 周琪, 钟永辉, 陈星, 等. 石墨烯/纳米TiO2复合材料的制备及其光催化性能[J]. 复合材料学报, 2014, 31(2):255-262. ZHOU Q, ZHONG Y H, CHEN X, et al. Preparation and photocatalytic activity of graphene/nano TiO2 composites[J]. Acta Materiae Compositae Sinica, 2014, 31(2):255-262(in Chinese). |
| [6] | JING L Q, SUN X J, XIN B F. The preparation and characterization of La doped TiO2 nanoparticles and their photocatalytic activity[J]. Journal of Solid State Chemistry, 2004, 177(10):3375-3382. |
| [7] | WU X H, DING X B, QIN W, et al. Enhanced photo-catalytic activity of TiO2 films with doped La prepared by micro-plasma oxidation method[J]. Journal of Hazardous Materials, 2006, 137(1):192-197. |
| [8] | 陈勇, 陈超, 刘欣伟, 等. La掺杂TiO2/石英砂的制备及其光催化性能[J]. 功能材料, 2015, 46(1):1037-1040. CHEN Y, CHEN C, LIU X W, et al. Preparation and properties of lanthanum doping TiO2/quartz sand composite photocatalyst[J]. Journal of Functional Materials, 2015, 46(1):1037-1040(in Chinese). |
| [9] | ASAHI R, MORIKAWA T, OHWAKI T, et al. Visible-light photocatalysis in nitrogen-doped titanium oxides[J]. Science, 2001, 293(5528):269-271. |
| [10] | 赵宏生, 胡红坡, 张凯红. 氮掺杂二氧化钛薄膜的制备与光催化性能[J]. 稀有金属材料与工程, 2009, 38(10):1815-1817. ZHAO H S, HU H P, ZHANG K H. Preparation and photocatalysis property of N-doped TiO2 film[J]. Rare Metal Materials and Engineering, 2009, 38(10):1815-1817(in Chinese). |
| [11] | SENTHILNATHAN J, PHILIP L. Photodegradation of methyl parathion and dichlorvos from drinking water with N-doped TiO2 under solar radiation[J]. Chemical Engineering Journal, 2011, 172(2):678-688. |
| [12] | 安兴才, 刘刚, 韩立娟, 等. V-N共掺杂TiO2/凹凸棒土光催化复合材料的制备及光催化性能[J]. 复合材料学报, 2014, 31(2):423-426. AN X C, LIU G, HAN L J, et al. Preparation and photocatalytic properties of V-N co-doped TiO2/attapulgite photocatalytic composite materials[J]. Acta Materiae Compositae Sinica, 2014, 31(2):423-426(in Chinese). |
| [13] | 谢英娜, 安胜利, 袁春华. La3+-Pr3+共掺杂纳米TiO2粉体的光催化性能[J]. 复合材料学报, 2012, 29(6):97-101. XIE Y N, AN S L, YUAN C H. Influence of La3+ and Pr3+ co-doped on photocatalytic properties of TiO2 nanoparticles[J]. Acta Materiae Compositae Sinica, 2012, 29(6):97-101(in Chinese). |
| [14] | SONG S H, KANG M. Decomposition of 2-chlorophenol using a tourmaline-photocatalytic system[J]. Journal of Industrial and Engineering Chemistry, 2008, 14(6):785-791. |
| [15] | LIANG N, DING H, ZHA Y P. Preparation and characterization of tourmaline/TiO2 composite particles material[J]. Advanced Materials Research, 2010, 96:145-150. |
| [16] | LIU L B, HE D L, ZHAO D W. Study on photocatalysis degradation of phenol by using tourmaline/TiO2 system as catalyst[J]. Advanced Materials Research, 2011, 399-401:1337-1341. |
| [17] | 中华人民共和国环境保护部. 水质梯恩梯的测定亚硫酸钠分光光度法:HJ 598-2011[S]. 北京:中国环境科学出版社, 2011. Ministry of Environmental Protection of the People's Republic of China. Water quality-Determination of TNT-sodium sulfite spectrophotometric method:HJ 598-2011[S]. Beijing:China Environmental Science Press, 2011(in Chinese). |
| [18] | XU J H, LI J X, DAI W L, et al. Simple fabrication of twist-like helix N, S-codoped titania photocatalyst with visible-light response[J]. Applied Catalysis B Environmental, 2008, 79(1):72-80. |
| [19] | LI G H, GRAY K A. The solid-solid interface:Explaining the high and unique photocatalytic reactivity of TiO2-based nanocomposite materials[J]. Chemical Physics, 2007, 339(1-3):173-187. |
| [20] | 冀志江, 金宗哲, 梁金生. 极性晶体电气石颗粒的电极性观察[J]. 人工晶体学报, 2002, 31(5):503-508. JI Z J, JIN Z Z, LIANG J S. Observation of electric dipole on polar crystalline tourmaline granules[J]. Journal of Synthetic Crystals, 2002, 31(5):503-508(in Chinese). |
| [21] | XU H Y, ZHENG Z, MAO G J. Enhanced photocatalytic discoloration of acid fuchsine wastewater by TiO2/schorl composite catalyst[J]. Journal of Hazardous Materials, 2010, 175(1-3):658-665. |
| [22] | 程修文. 共掺杂型TiO2可见光催化剂的制备、表征及其性能研究[D]. 哈尔滨:黑龙江大学, 2011. CHENG X W. Preparation, characterization and properties of co-doped TiO2 photocatalyst[D]. Harbin:Heilongjiang University, 2011(in Chinese). |
| [23] | 赵鹏昱. 稀土、N共掺杂TiO2催化剂的制备及其光催化性能研究[D]. 哈尔滨:黑龙江大学, 2012. ZHAO P Y. Preparation and photocatalytic activity of rare earth and N co-doped TiO2 catalysts[D]. Harbin:Heilongjiang University, 2012(in Chinese). |
| [24] | KOUDELKA M, MONNIER A, SANCHEZ J, et al. Correlation between the surface composition of Pt/TiO2 catalysts and their adsorption behaviour in aqueous solutions[J]. Journal of Molecular Catalysis, 1984, 25(1-3):295-305. |
| [25] | ONG J L, LUCAS L C, RAIKAR G N, et al. Electrochemical corrosion analyses and characterization of surface-modified titanium[J]. Applied Surface Science, 1993, 72(1):7-13. |
