The preparation method of visible light catalyst includes the following steps: mixing cyanuric chloride and sulfur single substance S8 and fully grinding to get solid powder; the obtained solid powder is placed in the muffle furnace, heat treated under nitrogen atmosphere, and naturally cooled to room temperature to get the products. The photocatalyst is applied to photocatalytic decomposition of water to produce hydrogen. The sulfur monomer S8 exists in different phase states at different temperatures and is solid at normal temperature. When the temperature rises above 115.2 C, it will melt into liquid phase, and it will turn into gas phase at 444.6. When the tripolyhydrochloric acid is co heated with the sulfur S8, the sulfur S8 is liquid at 115.2 ~ 444.6 C, and the tripolyhydrochloric acid is equivalent to polymerizing in sulfur solvent. The presence of sulfur also accelerates the polymerization of tripolyhydrochloric acid and promotes the process of deamination. The carbon nitride visible light catalyst obtained by the invention is a two-dimensional carbon nitride with hollow saclike structure. Its photocatalytic activity is excellent, and the whole preparation process does not need any template and subsequent treatment, and the preparation is completed by one step.
【技术实现步骤摘要】
一种可见光催化剂的制备方法与应用
本专利技术涉及光催化剂,具体地说是一种可见光催化剂的制备方法与应用
技术介绍
石墨相氮化碳光催化剂是一种新型的,具有类石墨相的,层状二维结构的聚合物半导体。不同于其他由过渡金属构成的二维材料,石墨相氮化碳具有化学构成简单、密度低、化学惰性、生物兼容性以及结构易于调控等特点。自首次发现这种聚合物半导体具有一定的光催化性能,人们围绕着优化氮化碳的化学结构以及调控形貌等方面展开了大量的研究工作,以提高其不足的光催化性能。迄今为止,一维纳米棒、二维纳米片、三维空心球、三维多级纳米球均被发展为新型的氮化碳光催化剂,光催化性能得到有效提高。然而,由于一维纳米棒的光催化性能不理想,而三维纳米球的制备又需借助模板剂,操作繁杂,故基于其层状结构特点的二维纳米片的开发成为人们研究的重点。研究发现,当将体相材料的维度降低至二维后,光激发产生的电子从体相迁移到表面的距离变短,面内电荷迁移速率得到提高,且由于暴露出足够大的比表面积,也会有更多的活性位点接触到更多的反应物,光催化性能可以得到更有效的提高。然而,目前对二维氮化碳光催化剂的开发工作仅局限于纳米片 ...
【技术保护点】
一种可见光催化剂的制备方法,其特征在于具有以下步骤:(1)、将三聚氰氯和硫单质S8按质量比3~5:10~30混合并充分研磨2~4小时,得到固体粉末;(2)、将步骤(1)获得的固体粉末置于马弗炉中,氮气气氛下400~700℃热处理1~4小时,氮气流量保持为6L·min
【技术特征摘要】
1.一种可见光催化剂的制备方法,其特征在于具有以下步骤:(1)、将三聚氰氯和硫单质S8按质量比3~5:10~30混合并充分研磨2~4小时,得到固体粉末;(2)、将步骤(1)获得的固体粉末置于马弗炉中,氮气...
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