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| 1 | One-step fabrication of nitrogen-deficient carbon nitride through pyrolysis of melamine and 1,2,4-triazole for its enhanced photocatalytic degradation显示文摘The construction of defects in semiconductor photocatalysts,as a kind of modification methods,plays an indispensable role in the enhancement of the photocatalytic performance.Herein,nitrogen defects were successfully introduced into the framework of graphite carbon nitride(CN-T_(x))through thermal polymerization with melamine and 1,2,4-triazole as precursors.The existence of nitrogen defects in CN-T_(x) were confirmed to be located at the two-coordinated(N_(2c))C■N-C lattice sites,which resulted in the destruction of its planar structure and the initiation of n-π^(*)electron transition that greatly expanded the response range to visible light and improved the separation efficiency of photogenerated charge carrier.More significantly,CN-T_(x) could enhance photocatalytic water purification activity towards different kinds of pollutants.The photocatalytic rates of CN-T_(3) were estimated to be 2.54(tetracycline)and 2.31(2-hydroxynaphthalene)times higher than those of pristine g-C3N4.Furthermore,the possible photocatalytic degradation mechanism over CN-T_(x) photocatalyst was proposed by free radical trapping experiments combined with ERS characterization.This work provides an in-depth understanding of the important role of nitrogen defects in the electronic structure and chemical properties of g-C3N4 and its photocatalytic water purification performance. | Jing Ding Zongyuan Li Xueru Chen Yiwei Jiao Dashui Yuan Wei Du Hui Wan Guofeng Guan | 2021 | Green Chemical Engineering2021，2，3： | 1 |
| 2 | 超声法合成Fe^(3+)掺杂BiOBr光催化材料及其高效降解甲基橙显示文摘采用超声法合成了Fe^(3+)掺杂的BiOBr光催化材料。通过XRD和SEM对材料的物相和形貌进行了表征分析,并进行了Bi_(0.9)Fe_(0.1)OBr对甲基橙的光催化降解性能试验。结果表明,当Bi_(0.9)Fe_(0.1)OBr投加量为10 mg,pH 7~9和PMS浓度为1 mmoL/L时,在6 W的LED光源辐照下,复合材料对甲基橙的降解率达到100%。 | 李瑞鹏 胡峥嵘 李慧 韩子寅 张志伟 宋爱君 鲁勖琳 沈莉 吉国佳 党雅茹 | 2023 | 河北科技师范学院学报2023，37，1： | 0 |
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