Hydrothermally treated peat/magnetite composites as highly efficient heterogeneous Fenton catalyst: Integrating multiple reaction mechanisms to enhance the catalytic reactivity for BPA removal
文献类型：期刊论文
| 作者 | Deng, Fangxin1,4; Chen, Qingze1,4; Zhu, Yanping2; Liang, Xiaoliang1,4 ; Zhu, Runliang1,4; Xi, Yunfei3
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2023-10-01 |
| 卷号 | 473页码:12 |
| 关键词 | Heterogeneous Fenton Peat Magnetite Hydrothermal carbon Environmental remediation |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2023.144946 |
| 英文摘要 | Although various strategies have been developed to boost the reactivity of heterogeneous Fenton catalysts, integrating multiple strategies in one catalyst to achieve high Fenton reactivity is still a challenge. To tackle this issue, the ball-milled peat and magnetite (Mag) composites were hydrothermally treated to synthesize novel heterogeneous Fenton catalyst (i.e., Mag-HTP) for bisphenol A (BPA) removal. The degradation efficiency of BPA (30 mg/L) by H2O2 (2 mmol/L) activated with 50 %Mag-HTP (0.2 g/L) was above 98% within 120 min at initial pH 3. The calculated degradation rate constant of Mag-HTP was 0.0873, which was 20.6 folds higher than that of Mag; moreover, it possessed high reactivity over a wide pH range (3-7) with low H2O2 dosage (0.5-2 mM), and high reaction stability (eight cycles with degradation rate over 95%). The multiple reactive mechanisms were validated: (1) NMR/XPS spectra, H2O2 decomposition, and HO center dot production experiments proved the HTP as an electron donor could directly reduce Fe(III); (2) C-V curves proved the formed C-O-Fe bonds could lower the Fe (II)/Fe(III) redox potential; (3) Raman/EIS spectra, Tafel plot, and radical scavenging tests proved that HTP could serve as an electron shuttle for transferring electrons from H2O2 to Fe(III); (4) NMR spectra proved the formed C-O-C bonds on HTP could function as the dual-reaction-center in Fenton reaction. These multiple mechanisms collectively contributed to the high reactivity of Mag-HTP in the Fenton reaction. Therefore, MagHTP shows great potential for practical applications in wastewater treatment and soil remediation due to its cost-effectiveness, easy separation, and high Fenton reactivity. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001169808300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77351]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhu, Yanping; Zhu, Runliang |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.South China Agr Univ, Coll Nat Resources & Environm, Guangdong Lab Lingnan Modern Agr, Guangdong Prov Key Lab Agr & Rural Pollut Abateme, Guangzhou 510642, Peoples R China 3.Queensland Univ Technol QUT, Sch Chem & Phys, Brisbane, Qld 4001, Australia 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Fangxin,Chen, Qingze,Zhu, Yanping,et al. Hydrothermally treated peat/magnetite composites as highly efficient heterogeneous Fenton catalyst: Integrating multiple reaction mechanisms to enhance the catalytic reactivity for BPA removal[J]. CHEMICAL ENGINEERING JOURNAL,2023,473:12. |
| APA | Deng, Fangxin,Chen, Qingze,Zhu, Yanping,Liang, Xiaoliang,Zhu, Runliang,&Xi, Yunfei.(2023).Hydrothermally treated peat/magnetite composites as highly efficient heterogeneous Fenton catalyst: Integrating multiple reaction mechanisms to enhance the catalytic reactivity for BPA removal.CHEMICAL ENGINEERING JOURNAL,473,12. |
| MLA | Deng, Fangxin,et al."Hydrothermally treated peat/magnetite composites as highly efficient heterogeneous Fenton catalyst: Integrating multiple reaction mechanisms to enhance the catalytic reactivity for BPA removal".CHEMICAL ENGINEERING JOURNAL 473(2023):12. |
入库方式： OAI收割
来源：广州地球化学研究所
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