Gd~(3+)掺杂TiO_2纳米管的制备及性能研究
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摘要
本文以钛酸四丁酯为前躯体,结合溶胶-凝胶法和水热法,制备了Gd~(3+)掺杂的TiO_2纳米管。采用TG-DSC、XRD、TEM、UV-Vis等分析手段,对Gd~(3+)掺杂的TiO_2纳米管进行表征,比较了制备条件相同的情况下纯TiO_2纳米管与Gd~(3+)掺杂的TiO_2纳米管晶型转变温度、形貌及UV-Vis吸收差别。结果表明,Gd~(3+)的掺杂有利于晶型转变的降低,管径的减小,管长的增长。UV-Vis吸收光谱表明掺杂后的产物的反射率明显的比纯TiO_2纳米管的反射率减小,可见光区吸收增强,吸收边发生了明显的红移。
Gd~(3+) doped TiO_2 nanotubes were prepared by using tetrabutyl titanate as precursor and sol-gel method and hydrothermal method.The Gd~(3+) doped TiO_2 nanotubes were characterized by TG-DSC,XRD,TEM and UV-Vis.The crystal transition temperatures,morphology and UV-Vis absorption difference of pure TiO_2 nanotubes and Gd~(3+) doped TiO_2 nanotubes were compared under the same preparation conditions.The results show that the doping of Gd~(3+) is beneficial to the reduction of crystal transformation,the decrease of tube diameter and the growth of tube length.The UV-Vis absorption spectrum shows that the reflectivity of the doped product is significantly lower than that of the pure TiO_2 nanotube,the absorption in the visible region is enhanced,and the absorption edge is significantly red-shifted.
Gd~(3+) doped TiO_2 nanotubes were prepared by using tetrabutyl titanate as precursor and sol-gel method and hydrothermal method.The Gd~(3+) doped TiO_2 nanotubes were characterized by TG-DSC,XRD,TEM and UV-Vis.The crystal transition temperatures,morphology and UV-Vis absorption difference of pure TiO_2 nanotubes and Gd~(3+) doped TiO_2 nanotubes were compared under the same preparation conditions.The results show that the doping of Gd~(3+) is beneficial to the reduction of crystal transformation,the decrease of tube diameter and the growth of tube length.The UV-Vis absorption spectrum shows that the reflectivity of the doped product is significantly lower than that of the pure TiO_2 nanotube,the absorption in the visible region is enhanced,and the absorption edge is significantly red-shifted.
引文
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[3] YU L Q,ZHI Q Q,HUANG C X,et al.Photocatalytic properties of TiO2 porous network film.Journal of Nanoscience & Nano technology,2015,15(9):6576-6581.
[4] 李川,古国榜,柳松.TiO2光催化处理废水中贵金属的研究进展[].环境污染治理技术与设备,2003,4(11):6-11.
[5] 牛微,毕孝国,王刚,等.Sm 掺杂对 TiO2 薄膜结构和电致变色性能的影响[J].功能材料,2014,4(45):02001-02004.
[6] 陈俊涛,李新军,杨莹.Sm掺杂对 TiO2 薄膜光催化性能的影响[J].催化学报,2004,25(5):397-402.
[7] 刘少友,冯庆革,唐文华,等.S、Al 掺杂 TiO2 纳米材料的固相合成及其可见光降解性能[J].无机化学学报,2011,27(4):673-681.
[8] LV C X,ZHOU Y,LI H,et al.Synthesis and characterisation of Gd3+-doped mesoporous TiO2 materials[J].Applied Surface Science,257 (2011):5104-5108.
[9] YI C Y,LI X,LOU J S.Perovskite Photovoltaics with Outstanding Performance Produced by Chemical Conversion of Bilayer Mesostructured Lead Halide/TiO2 Films [J].Advance Meterails,2016,28:2964-2970.
[10] 吴树新,马智,秦永宁,等.掺杂TiO2光催化性能的研究[J].物理化学学报,2004,20(2):138-143.
[11] 黄正宏,许德平,康飞宇,等.炭与TiO2光催化剂的复合与协同作用研究进展[J].新型炭材料,2004,19(3):229-238.
[12] ANDERSSON M,OSTERLUND L,LJUNGSTRON S,et al.Preparation of nano size anatase and rutile TiO2 by hydrothermal treatment of micromulsions and their activity for photocatalytic wet oxide of phenol[J].Journal of Physical Chemistry B,2002,106(41):10674-10679.
[13] 王保玉,张景会,刘湛.TiO2 纳米管的制备与表征[J].精细化工,2003,20(6):333-336.