【摘要】 论文以葡萄糖为碳源,采用水热法合成了C掺杂的二氧化钛,并使用XRD表征了C-TiO₂催化剂的结构；以空气中VOC气体甲醛为降解对象,研究了外部环境对C-TiO₂催化剂光催化性能的影响。结果表明,C-TiO₂催化剂对甲醛的去除率可达95%,高于纯TiO₂。提高温度有利于C-TiO₂催化剂对甲醛的降解,增加甲醛初始含量不利于甲醛的分解,粒径过大会抑制C-TiO₂催化剂对甲醛的去除,当催化剂涂敷量为10 g/m²时,甲醛去除率为佳。XRD表征发现,C-TiO₂仍然为锐钛矿二氧化钛。更多还原

【Abstract】 C-doped titanium dioxide was synthesized by hydrothermal method using glucose as carbon source, and the structure of C-TiO₂ catalyst was characterized by XRD. The effect of external environment on the photocatalytic performance of C-TiO₂ catalyst was studied by using formaldehyde as the degradation object. The results show that the removal rate of formaldehyde by C-TiO₂ catalyst can reach 95%, which is higher than that of pure TiO₂. Increasing the temperature is beneficial to the degradation of formaldehyde by C-TiO₂ catalyst. Increasing the initial content of formaldehyde is not conducive to the decomposition of formaldehyde.Excessive particle size will inhibit the removal of formaldehyde by C-TiO₂ catalyst. When the catalyst coating amount is 10 g/m², the formaldehyde removal rate is better. Finally, XRD characterization showed that C-TiO₂ was still anatase titanium dioxide.更多还原