基于共沉积法的高结晶反蛋白石g-C3N4制备及其产氢性能分析
Preparation of highly crystalline inverse opal g-C3N4 by co-deposition and analysis of its hydrogen production performance
颉启东 1王聪 1傅雅琴 1司银松1
作者信息
- 1. 浙江理工大学材料科学与工程学院,杭州 310018
- 折叠
摘要
为获得光催化产氢性能优异的g-C3N4,采用共沉积法,通过二氧化硅微球/单氰胺混合溶液制备具有高结晶反蛋白石结构的g-C3N4,并通过扫描电镜、X射线衍射仪、红外光谱仪和比表面积及孔径分析仪等表征手段对其结构和形貌进行分析,采用气相色谱仪对其光催化产氢性能进行表征.结果表明:当二氧化硅微球/单氰胺混合溶液的离心速率为5500 r/min和单氰胺溶液质量分数为70％时,所制备的高结晶反蛋白石结构的g-C3N4(CN5500-70％)层间距为3.23 Å,比表面积为32 m2/g,光催化产氢性能显著提升,产氢速率为7217.01 μmol/(g·h).该方法制备的高结晶反蛋白石结构g-C3N4具有良好的结晶性和优异的光催化产氢活性,为g-C3N4基催化材料的实际应用提供参考.
Abstract
To obtain g-C3N4 with excellent photocatalytic hydrogen production activity,in this paper,highly crystalline inverse opal-structured g-C3N4 was prepared by co-deposition of silica microspheres/cyanamide in their mixed dispersion.The structure and morphology were analyzed by scanning electron microscopy,X-ray diffraction,infrared spectroscopy,and specific surface area and pore size analysis;the photocatalytic hydrogen production performance was tested by gas chromatography.The results show the interlayer spacing of highly crystalline inverse opal-structured g-C3N4(CN5500-70％)reaches 3.23 Å and the specific surface area reaches 32 m2/g when the centrifugation rate is set at 5500 r/min and the mass fraction of cyanamide solution is 70％.The photocatalytic hydrogen production property is significantly improved with a hydrogen production rate of 7217.01 μmol/(g·h).The highly crystalline inverse opal-structured g-C3N4 prepared in this paper has good crystallinity and excellent photocatalytic activity simultaneously,which can provide useful reference for the practical application of g-C3N4-based catalytic materials.
关键词
g-C3N4/共沉积/反蛋白石结构/高结晶/光催化Key words
g-C3N4/co-deposition/inverse opal structure/high crystallization/photocatalysis引用本文复制引用
基金项目
国家自然科学基金(52003243)
浙江省自然科学基金(LQ21E030010)
出版年
2024
NETL
NSTL
万方数据