[1]马允.TiO2掺杂改性对UiO-66结构和催化性能的影响[J].深圳大学学报理工版,2022,39(5):497-503.[doi:10.3724/SP.J.1249.2022.05497]
 MA Yun.Effect of TiO2 doping modification on structure and catalytic performance of UiO-66[J].Journal of Shenzhen University Science and Engineering,2022,39(5):497-503.[doi:10.3724/SP.J.1249.2022.05497]
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TiO2掺杂改性对UiO-66结构和催化性能的影响()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第39卷
期数:
2022年第5期
页码:
497-503
栏目:
材料科学
出版日期:
2022-09-16

文章信息/Info

Title:
Effect of TiO2 doping modification on structure and catalytic performance of UiO-66
文章编号:
202205002
作者:
马允
安庆医药高等专科学校药学院,安徽安庆 246052
Author(s):
MA Yun
School of Pharmacy, Anqing Medical College, Anqing 246052, Anhui Province, P. R. China
关键词:
复合材料UiO-66二氧化钛掺杂改性催化活性可见光
Keywords:
composite materials UiO-66 TiO2 doping modification catalytic activity visible light
分类号:
O643
DOI:
10.3724/SP.J.1249.2022.05497
文献标志码:
A
摘要:
为获得具有可见光响应的高活性光催化剂,利用二氧化钛(TiO2)对UiO-66掺杂改性,通过水热法合成TiO2@UiO-66.采用扫描电子显微镜(scanning electron microscope, SEM)、X射线衍射(X-ray diffraction, XRD)、傅里叶红外光谱分析(Fourier transform infrared spectroscopy, FTIR)和N2吸附-脱附(N2 adsorption-desorption)等手段,考察TiO2掺杂对UiO-66结构和表面形貌的影响.结果表明,所制备样品均为正八面体结构;改性前UiO-66比表面积高达1 270 m2/g,少量TiO2掺杂时,TiO2@UiO-66的比表面积与UiO-66相差无几;TiO2掺杂量增加至15 mmol时,TiO2@UiO-66的比表面积骤减到413 m2/g,TiO2掺杂过多会降低UiO-66的比表面积.以可见光下样品对头孢曲松钠的去除为探针反应考察其催化活性,结果显示,TiO2掺杂量为10 mmol时,可见光照射120 min,TiO2@UiO-66对头孢曲松钠的去除率达到64.86%,是UiO-66的1.28倍.因此,适量掺杂TiO2可以提高UiO-66对头孢曲松钠的去除率.研究可为改性UiO-66光催化剂设计和头孢抗生素污染物的光催化降解提供参考.
Abstract:
In order to obtain a highly active photocatalyst with visible light response, UiO-66 was modified by doping TiO2 and TiO2@UiO-66 was synthesized with the hydrothermal method. Scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and N2 adsorption-desorption were used to investigate the effect of TiO2 doping on the structure and surface morphology of UiO-66. The results showed that all the samples had regular octahedral structure. The specific surface area of UiO-66 was high up to 1 270 m2/g before modification, and the specific surface area of TiO2@UiO-66 was similar to that of UiO-66 with a small amount of TiO2 doping. When the doping amount was increased to 15 mmol, the specific surface area of TiO2@UiO-66 was decreased sharply to 413 m2/g, since excessive TiO2 doping reduced the specific surface area of UiO-66. Removal of ceftriaxone sodium by samples under visible light was used as probe reaction to investigate its catalytic activity. The photocatalytic results showed that the removal rate of ceftriaxone sodium by TiO2@UiO-66 reached 64.86%,which was 1.28 times that of UiO-66, when TiO2 doping amount was 10 mmol and visible light irradiation was 120 min. Therefore, appropriate TiO2 doping can improve the removal rate of UiO-66 to ceftriaxone sodium. This work may provide new insights into the design of modified UiO-66 photocatalyst and the photocatalytic degradation of cephalosporins.

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备注/Memo

备注/Memo:
Received: 2021- 09-29; Accepted: 2022-03-20; Online (CNKI): 2022- 09- 07
Foundation: Natural Science Foundation of Anhui Province (KJ2020A0885);Anhui Province Outstanding Talents Cultivation Funding Project (gxgnfx2020140); Key Scientific Research Project of Anqing Medical College (ZR2019002)
Corresponding author: Associate professor MA Yun. E-mail: mayun-my@163.com
Citation: MA Yun. Effect of TiO2 doping modification on structure and catalytic performance of UiO-66 [J]. Journal of Shenzhen University Science and Engineering, 2022, 39(5): 497-503.(in Chinese)
基金项目:安徽省高校自然科学研究重点资助项目(KJ2020A0885);安徽省高校优秀拔尖人才培育资助项目(gxgnfx2020140);安庆医药高等专科学校科学研究重点资助项目(ZR2019002)
作者简介:马允(1980—),安庆医药高等专科学校副教授.研究方向:催化新材料与新术.E-mail: mayun-my@163.com
引文:马允.TiO2掺杂改性对UiO-66结构和催化性能的影响[J].深圳大学学报理工版,2022,39(5):497-503.
更新日期/Last Update: 2022-09-30