Page 123 - 《精细化工》2021年第4期
P. 123

第 38 卷第 4 期                             精   细   化   工                                  Vol.38, No.4
             202 1 年 4 月                             FINE CHEMICALS                                 Apr.  2021


              功能材料
                    有机锆聚合物气凝胶的制备及光催化还原 CO
                                                                                                    2


                                                                             1
                                                                2
                                                   1
                                                                                          1*
                                       1
                             刘青青 ,张芩宇 ,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,海南省特种玻璃重点实验室,海南  海口  570228;
                 2.  海南海控特玻科技有限公司,海南  澄迈  571900)
                                                                     4+
                 摘要:以 2-氨基对苯二甲酸(NH 2 -BDC)为配体、四氯化锆为 Zr 源,采用溶胶-凝胶法制备了 4 种不同配体/
                 金属离子物质的量比的气凝胶,并通过 SEM、BET、FTIR、XPS、UV-Vis、荧光光谱等表征了材料的结构及光
                 电性能。结果表明,这种气凝胶不仅具有大的比表面积与丰富的孔道结构,而且在氙灯照射下具有光电效应,
                 可以在水中催化还原 CO 2 生成甲醇。在 300 W  的氙灯照射下,研究了不同配体/金属离子物质的量比对光催化
                                                                 4+
                 还原 CO 2 的影响。结果表明,当气凝胶中 n(NH 2 -BDC)∶n(Zr )的实际比例为 1.10∶1 时,4 h 光催化反应后甲
                                                               –1
                 醇产率为 3.94 mmol/g-cat,催化转换频率(TOF)为 2.29 h 。相同催化反应条件下以 NH 2 -UiO-66(Zr)为光催化
                                                        –1
                 剂,甲醇的产率为 2.33 mmol/g-cat,TOF 为 1.80 h 。此外,该气凝胶具有较好的光催化稳定性。
                 关键词:气凝胶;光催化;CO 2 ;甲醇;功能材料
                 中图分类号:TQ426;O644.1;X701      文献标识码:A      文章编号:1003-5214 (2021) 04-0757-08


                            Preparation of organozirconium polymer aerogels and

                                          photocatalytic reduction of CO 2

                                                                 2
                                                   1
                                                                                                 1*
                                   1
                                                                              1
                       LIU Qingqing , ZHANG Qinyu , 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. Hainan Haikong Special Glass Technology Co., Ltd.,
                 Chengmai 571900, Hainan, China)
                 Abstract: Four aerogels with different molar ratios of ligand to metal ion were prepared by sol-gel method
                                                                                            4+
                 using  2-aminoterephthalic acid (NH 2-BDC) as ligand and zirconium tetrachloride as Zr  source.  The
                 structure  and photoelectric properties of  the  materials were characterized  by SEM, BET, FTIR,  XPS,
                 UV-Vis and fluorescence spectroscopy. The results showed that the aerogels had a large specific surface
                 area and rich pores and exhibited photoelectric effect under  Xenon lamp irradiation. They could
                 photocatalyze the reduction of CO 2 to produce methanol in water. The effects of different molar ratios of
                 ligand to metal ion on the photocatalytic reduction of CO 2 were investigated under 300 W Xenon lamp
                 irradiation. When the photocatalytic reduction of CO 2 was performed for 4 h over the aerogel which actual
                                        4+
                 molar ratio NH 2-BDC to Zr  was 1.10∶1, the methanol yield was 3.94 mmol/g-cat and the corresponding
                                                 –1
                 turnover frequency (TOF)  was 2.29  h .  While the methanol yield and TOF  over  NH 2-UiO-66(Zr) was
                                         –1
                 2.33 mmol/g-cat  and 1.80 h  under the same reaction  conditions.  In addition, the aerogel had  good
                 photocatalytic stability.
                 Key words: aerogel; photocatalysis; CO 2; methanol; functional materials


                 近年来,太阳能驱动的光化学合成引起了广泛                          源和环境问题具有重要意义。金属有机骨架(MOF)
                                                                                                          [6]
                   [1]
            地关注 ,特别是光催化 CO 2 的还原             [2-5] ,对解决能       是一种结晶的金属有机聚合物,具有良好的孔隙度 ,

                 收稿日期:2020-12-22;  定用日期:2021-02-24; DOI: 10.13550/j.jxhg.20201208
                 基金项目:海南省重点研发计划项目(ZDYF2020015);国家自然科学基金(51761010);海南大学科研平台建设(ZY2019HN09)
                 作者简介:刘青青(1995—),女,硕士生,E-mail:1396787548@qq.com。联系人:熊春荣(1973—),男,教授,E-mail:bearcr_82@
                 hotmail.com。
   118   119   120   121   122   123   124   125   126   127   128