Page 97 - 《精细化工》2020年第6期
P. 97
第 37 卷第 6 期 精 细 化 工 Vol.37, No.6
202 0 年 6 月 FINE CHEMICALS June 2020
功能材料
非晶态有机锆聚合物制备及其光催化 CO 合成甲醇
2
1
2
1*
1
赵 远 ,贺建雄 ,姜 宏 ,熊春荣
(1. 海南大学 南海海洋资源利用国家重点实验室,海南省特种玻璃实验室,海南 海口 570228;2. 海
南中航特玻科技有限公司,海南 澄迈 571900)
摘要:采用溶剂热法在增透的多孔玻璃表面制备负载非晶态有机锆聚合物,通过 SEM、XRD、BET、FTIR、
UV-Vis、ICP、有机元素分析、荧光光谱(PL)及紫外光电子能谱(UPS)等手段对样品进行了表征。结果表明,
非晶态有机锆聚合物(2.64 eV)具有比 NH 2 -UiO-66(Zr)(2.74 eV)更窄的带隙,复合速率较慢的光生电子-空穴对。
2
在光催化反应器中放入 2 片负载非晶态有机锆的玻璃(总面积 50.4 cm ),在 300 W 的氙灯照射下催化还原 CO 2
–1
合成甲醇,反应 4 h 后甲醇的产量为 443.0 μmol,转换频率(TOF)为 8.69 h 。当 0.1 g NH 2 -UiO-66(Zr)为催化
–1
剂时,甲醇的产量为 244.3 μmol,TOF 仅为 0.17 h 。非晶态有机锆聚合物的光催化性能明显优于 NH 2 -UiO-66(Zr)
粉末,且循环稳定性良好。
关键词:非晶态有机锆;甲醇;光催化;转换频率;CO 2 ;功能材料
中图分类号:TQ426; X701; TQ223.121 文献标识码:A 文章编号:1003-5214 (2020) 06-1163-08
Preparation of amorphous organozirconium polymer and its
photocatalytic synthesis of methanol from CO 2
1
1
1*
2
ZHAO Yuan , HE Jianxiong , JIANG Hong , XIONG Chunrong
(1. Skate Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Lab of Hainan Province,
Hainan University, Haikou 570228, Hainan, China; 2. AVIC Hainan Special Glass Technology Co., Ltd., Chengmai 571900,
Hainan, China)
Abstract: Glass slide immobilized amorphous organozirconium polymer was fabricated by solvethermal
method. The sample was characterized by SEM, XRD, BET, FTIR, UV-Vis, ICP, organic element analysis,
fluorescence spectroscopy (PL) and ultraviolet photoelectron spectroscopy (UPS). The results showed
amorphous organozirconium polymer had a narrower band-gap width (2.64 eV) than NH 2-UiO-66(Zr)
powder (2.74 eV). Additionally, amorphous organozirconium exhibited slow recombination rate of
photogenerated electron-hole pairs. Two pieces of glass slides loaded with amorphous organozirconium
2
were glued together with a total area of 50.4 cm to use in the photocatalytic synthesis of methanol from
CO 2. The reaction was illuminated under a 300 W Xe lamp for 4 h. The yield of methanol was 443.0 μmol,
–1
and the corresponding turnover frequency (TOF) was 8.69 h . While 0.1 g NH 2-UiO-66(Zr) was used as
catalyst under the same reaction conditions, the yield of methanol was 244.3 μmol, and the TOF was only
–1
0.17 h . Therefore, the photocatalytic performance of amorphous organozirconium polymer is obviously
better than that of NH 2-UiO-66(Zr) powder and shows good cyclic stability.
Key words: amorphous organozirconium; methanol; photocatalysis; turnover frequency; CO 2; functional
materials
随着不可再生能源消耗的日益增大,大气中排 高温高压下热催化生产 [1-3] 。设备投资及能源消耗巨
放的大量 CO 2 使能源和环境问题日益突出。甲醇是 大。如何有效利用可见光将 CO 2 转化为甲醇已成为
清洁的绿色燃料,工业上是由 CO/CO 2 /H 2 混合气在 当今的重要研究课题。
收稿日期:2020-04-06; 定用日期:2020-04-28; DOI: 10.13550/j.jxhg.20200298
基金项目:海南省重大科技计划项目(ZDKJ2017011);海南大学科研平台建设(ZY2019HN09)
作者简介: 赵 远(1991—),女,硕士生,E-mail:zhaoyuan.l@qq.com。联系人:熊春荣(1973—),男,教授,E-mail:bearcr_82@hotmail.com。