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Synthesis of kappa fiber modified graphite carbon nitride with outstanding photocatalytic phenol degradation ability
Diamond and Related Materials ( IF 4.1 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.diamond.2020.107817 Shaozheng Hu , Hui Wang , Fei Wang , Zheng Li , Wei Li , Jin Bai
Diamond and Related Materials ( IF 4.1 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.diamond.2020.107817 Shaozheng Hu , Hui Wang , Fei Wang , Zheng Li , Wei Li , Jin Bai
Abstract In this work, kapok fiber (KF) modified graphite carbon nitride (g-C3N4) was prepared by pyrolysis method and the photocatalytic degradation ability of phenol was investigated. XRD, UV–Vis DRS, FT-IR, TEM, XPS, N2 adsorption and PL were used to characterize the as-prepared catalysts. The results showed that KF, as a dual-function modifier, not only provided carbon source for carbon doping, but transformed into activated carbon substrate during calcination, making g-C3N4 grow on it. The KF modified g-C3N4 displays larger specific surface area, thinner layers, stronger visible light absorption capacity, higher separation efficiency and photocatalytic degradation performance. The KF modified g-C3N4 shows the phenol degradation rate constant of 0.258 h−1, which is 4.2 times higher than that of the neat g-C3N4, as well as excellent catalytic stability and structural stability. The excessive calcination temperature results in the low content of g-C3N4 in the catalyst, leading to the decline of photocatalytic performance.
中文翻译:
具有优异光催化降解苯酚能力的κ纤维改性石墨氮化碳的合成
摘要 本工作采用热解法制备了木棉纤维(KF)改性石墨氮化碳(g-C3N4),并研究了苯酚的光催化降解能力。XRD、UV-Vis DRS、FT-IR、TEM、XPS、N2 吸附和 PL 用于表征所制备的催化剂。结果表明,KF作为双功能改性剂,不仅为碳掺杂提供碳源,而且在煅烧过程中转化为活性炭基质,使g-C3N4在其上生长。KF修饰的g-C3N4表现出更大的比表面积、更薄的层、更强的可见光吸收能力、更高的分离效率和光催化降解性能。KF 改性 g-C3N4 的苯酚降解速率常数为 0.258 h-1,是纯 g-C3N4 的 4.2 倍,以及优异的催化稳定性和结构稳定性。过高的煅烧温度导致催化剂中g-C3N4含量低,导致光催化性能下降。
更新日期:2020-05-01
中文翻译:
具有优异光催化降解苯酚能力的κ纤维改性石墨氮化碳的合成
摘要 本工作采用热解法制备了木棉纤维(KF)改性石墨氮化碳(g-C3N4),并研究了苯酚的光催化降解能力。XRD、UV-Vis DRS、FT-IR、TEM、XPS、N2 吸附和 PL 用于表征所制备的催化剂。结果表明,KF作为双功能改性剂,不仅为碳掺杂提供碳源,而且在煅烧过程中转化为活性炭基质,使g-C3N4在其上生长。KF修饰的g-C3N4表现出更大的比表面积、更薄的层、更强的可见光吸收能力、更高的分离效率和光催化降解性能。KF 改性 g-C3N4 的苯酚降解速率常数为 0.258 h-1,是纯 g-C3N4 的 4.2 倍,以及优异的催化稳定性和结构稳定性。过高的煅烧温度导致催化剂中g-C3N4含量低,导致光催化性能下降。