论文部分内容阅读
以Na2[PbCl4]络合物溶液、Na2SeSO3溶液和TiO2纳米带为前驱物,采用水热法简单制备了无桥联PbSe修饰TiO2纳米带复合材料,并对该材料进行了罗丹明B的可见光催化降解活性测试。各种测试结果表明,立方相PbSe呈纳米粒子状态沉积在锐钛矿型TiO2纳米带表面,其沉积量可通过重复合成次数在一定程度上得到控制,但对TiO2纳米带比表面积影响很小,PbSe修饰有利于对有机物降解的光催化作用;PbSe对TiO2纳米带修饰呈现出明显可见光吸收,对TiO2起到光敏化作用;可见光催化结果证实,PbSe修饰TiO2纳米带对罗丹明B光催化降解活性远比纯TiO2纳米带高出许多。
The bridged PbSe modified TiO2 nanobelts composite materials were prepared by hydrothermal method using Na2 [PbCl4] complex solution, Na2SeSO3 solution and TiO2 nanobelts as precursors. The photocatalysts of Rhodamine B Degradation activity test. Various test results show that the cubic phase PbSe deposited in the state of nano-particles on the surface of anatase TiO2 nanobelts, and its deposition can be controlled to some extent by the number of repeated synthesis, but has little effect on the specific surface area of TiO2 nanobelts, PbSe modification is good for the photocatalytic degradation of organic matter; PbSe exhibits obvious visible light absorption to TiO2 nanoribbons and photosensitization to TiO2. The results of visible light catalysis confirmed that PbSe modified TiO2 nanobelts have a good photocatalytic activity on photocatalytic degradation of rhodamine B Much higher than pure TiO2 nanobelts.