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将层状HTiNbO5剥层絮凝成HTiNbO5纳米片,然后与硫脲焙烧,制得了S掺杂的HTiNbO5纳米片.与原始HTiNbO5和HTiNbO5纳米片相比,该样品具有较大的比表面积和明显的可见光吸收.以罗丹明B为降解物,评价了该催化剂的吸附性能和可见光催化性能.结果表明,HTiNbO5纳米片和S掺杂的HTiNbO5纳米片都具有很好的吸附能力和很高的可见光降解速率.然而,对于罗丹明B的矿化,S掺杂的HTiNbO5纳米片可以达到41%矿化率,而HTiNbO5纳米片上矿化单几乎为零.这说明S掺杂能有效改善纳米片的光催化效果.最后,对可能的光催化机理进行了探讨.
The layered HTiNbO5 layers were flocculated into HTiNbO5 nanosheets and then annealed with thiourea to fabricate S-doped HTiNbO5 nanosheets.Compared with the original HTiNbO5 and HTiNbO5 nanosheets, the sample has a large specific surface area and visible light The adsorption and the photocatalytic activity of the catalyst were evaluated using rhodamine B as the degradation product.The results showed that HTiNbO5 nanosheets and S-doped HTiNbO5 nanosheets have good adsorption capacity and high visible light degradation rate However, for the mineralization of Rhodamine B, the S-doped HTiNbO5 nanosheets can reach 41% mineralization, while the HTiNbO5 nanosheets have almost zero mineralization, indicating that S-doping can effectively improve the photocatalytic activity of nanosheets Effect.Finally, the possible mechanism of photocatalysis was discussed.