摘要
以L-半胱氨酸为硫源,明胶作为组装剂,采用水热方法制备了粒径均一的ZnS微米球。利用XRD,TEM,FESEM,FTIR探讨了明胶、反应时间和反应温度对产物形貌和尺寸的影响,其结果表明ZnS微米球是由ZnS纳米颗粒组装而成的3D多级结构。光催化性能研究表明,明胶的加入提高了最终产物的光催化性能。利用产物的荧光发光性能解释了其光催化性能产生差异的原因。
ZnS microspheres self-assembling from ZnS nanocrystals were synthesized via hydrothermal treatment at low temperature.L-cysteine（an ordinary amino acid） was used as a sulfur source and gelatin（an ordinary amino acid） was used as the assembling agent.By combining the results of XRD,TEM,FESEM,FTIR,it was found that gelatin, reaction time and temperature all played key roles in the formation of ZnS spheres.The photocatalytic activity of ZnS samples had been tested by degradation of Rhodamine-B（RB） under UV light.Comparing with ZnS crystals synthesized without gelatin,ZnS microspheres synthesized with gelatin showed better photocatalytic performance.PL spectrum confirmed that the photocatalytic performance of the as-synthesized ZnS spheres is related to their high content of sulfur vacancies.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第3期453-458,共6页
Chinese Journal of Inorganic Chemistry
基金
北京市自然科学基金(No.4082008)资助项目
关键词
ZNS
水热合成
光催化
ZnS
hydrothermal synthesis
photocatalytic
