Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO<sub>2</sub> photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI)

WANG Yayang; WANG Yifan; ZHANG Bin; YANG Xiaojie; LI Yuesheng

doi:10.11889/j.1000-3436.2022-0069

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Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO₂ photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI)

RADIATION CHEMISTRY | 更新时间：2023-09-15

- Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO₂ photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI)
- Journal of Radiation Research and Radiation Processing Vol. 41, Issue 1, Pages: 33-41(2023)
- 作者机构：
  
  1.武汉科技大学化学与化工学院武汉 430074
  2.湖北科技学院辐射化学与功能材料湖北省重点实验室咸宁 437000
  3.湖北省智慧康养产业技术研究院咸宁 437000
- 作者简介：
  
  WANG Yayang (female) was born in April 1995, and obtained her bachelor's degree from Hubei University of Science and Technology in 2020, and now she is a graduate student
  LI Yuesheng, professor, E-mail: frank789292@163.com
- 基金信息：
  
  Outstanding Young and Middle-aged Science and Technology Innovation Team Project of Hubei Province Colleges and Universities(T2020022);Xianning City Science and Technology Research and Development (High-tech R&D Key Special Project)(2021GXYF021);Hubei Province College Students Innovation and Entrepreneurship Training Program(S201910927021);Science Development Fund of Hubei University of Science and Technology(2021ZX01;2022FH09)
- DOI：10.11889/j.1000-3436.2022-0069
  CLC：
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WANG Yayang, WANG Yifan, ZHANG Bin, et al. Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO₂ photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI). [J]. Journal of Radiation Research and Radiation Processing 41(1):33-41(2023)
DOI：

WANG Yayang, WANG Yifan, ZHANG Bin, et al. Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO₂ photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI). [J]. Journal of Radiation Research and Radiation Processing 41(1):33-41(2023) DOI： 10.11889/j.1000-3436.2022-0069.

摘要

以二氧化钛（TiO,2,）为基材，甲基丙烯酸二甲氨基乙酯（DMAEMA）为单体，采用共辐射接枝法成功合成了聚甲基丙烯酸N，N-二甲氨基乙酯-TiO,2 ,（TiO,2,-,g,-PDMAEMA）吸附-光催化剂。同时探究了单体浓度和吸收剂量对重金属离子吸附作用的影响。利用扫描电镜、X射线衍射仪、傅里叶红外光谱分析仪、热重分析仪、X射线光电子能谱、接触角等表征手段，证实了电子束共辐射接枝法成功将DMAEMA单体接枝到TiO,2,表面。在吸收剂量为60 kGy、单体浓度为20%时，TiO,2,-,g,-PDMAEMA对10 mg/L Cr(VI)具有较佳的吸附能力，吸附容量可达10.75 mg/g。在可见光诱导下，吸收剂量为60 kGy、单体浓度为10%时，制备的TiO,2,-,g,-PDMAEMA具有最佳的吸附-光催化还原能力，对10 mg/L Cr(VI)的去除率达85.56%。该新型光催化剂上的吸附-光催化协同效应可以满足去除水中Cr(VI)污染的要求。

Abstract

TiO,2,-doped polymethacrylate N, N-dimethylaminoethyl methacrylate (DMAEMA) (TiO,2,-,g,-PDMAEMA) was successfully synthesized by the co-radiation grafting method with titanium dioxide (TiO,2,) and DMAEMA as the base and the monomer, respectively. Meanwhile, the effects of monomer concentration and absorbed dose on the adsorption of heavy metal ion were investigated. A series of characterizations, including X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetry, X-ray photoelectron spectroscopy and contact angle, confirmed that DMAEMA monomer was successfully grafted onto TiO,2, surface by electron beam co-radiation grafting method. When the absorbed dose was 60 kGy and the monomer concentration was 20%, TiO,2,-,g,-PDMAEMA exhibited excellent adsorption capacity for Cr (VI, 10 mg/L), up to 10.75 mg/g. In addition, the TiO,2,-,g,-PDMAEMA prepared at 60 kGy absorption dose and 10% monomer concentration displayed the optimal adsorption-photocatalytic reduction ability under visible-light irradiation, and the removal rate of Cr (VI, 10 mg/L) reached 85.56%. In conclusion, the adsorption-photocatalytic synergistic effect of this new photocatalyst could meet the requirement of removing Cr (VI) from water.

关键词

二氧化钛甲基丙烯酸二甲氨基乙酯辐射接枝光催化Cr（VI）吸附-光催化还原

Keywords

TiO2Polymethacrylate NN-dimethylaminoethyl methacrylate (PDMAEMA)Radiation graftingPhotocatalyticCr（VI）Adsorption-photocatalytic reduction

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Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO2 photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI)

DOI：10.11889/j.1000-3436.2022-0069

摘要

Abstract

关键词

Keywords

references

Preparation of poly(N, N-dimethylaminoethyl methacrylate)-TiO₂ photocatalyst by radiation grafting and its adsorption and reduction performance for Cr(VI)