期刊论文

中文

应用基础与工程科学学报

1005-0930

2022

30

3

519-529

10.16058/j.issn.1005-0930.2022.03.001

2020YFC1808802:国家重点研发计划 41571464:国家自然科学基金 XTCX2019-13:上海应用技术大学协同创新基金 ZZyyx19010:上海高校青年教师培养资助计划

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以大豆秸秆和三聚氰胺(C_3H_6N_6)为原料,制备了生物炭负载石墨相氮化碳复合光催化剂.采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外(FTIR)、紫外-可见吸收光谱(UV-vis)等手段对所制备的材料进行了表征.结果表明,生物炭负载石墨相氮化碳的吸收带边可拓展至637nm的可见光区,发生明显红移,且其禁带宽度降低,为1.95eV.光照时间、掺杂比例及光催化剂用量是影响土壤中石油烃去除的重要因素.制备的生物炭负载石墨相氮化碳复合光催化剂对土壤中石油烃去除率可达67.37%,可明显提高石油烃污染土壤修复效率.

Using soybean straw and melamine (C3H6N6) as raw materials, biochar supported graphite carbon nitride composite photocatalyst was prepared. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and ultraviolet visible absorption spectroscopy (UV-vis).The results show that the absorption band edge of carbon nitride supported on biochar can be extended to 637nm visible region, and the band gap is reduced to 1.95eV.Illumination time...