Preparation of biomass derived Fe/N co-doped porous carbon and its application for catalytic degradation of Rhodamine B via peroxymonosulfate activation

被引：0

作者：

Wu F. ^{[1
]}

Liu Z. ^{[1
]}

Xie W. ^{[1
]}

You Y. ^{[1
]}

Lai R. ^{[1
]}

Chen Y. ^{[1
]}

Lin G. ^{[2
]}

Lu B. ^{[1
]}

机构：

[1] College of Material Engineering, Fujian Agriculture and Forestry University, Fujian, Fuzhou

[2] Jinshan College, Fujian Agriculture and Forestry University, Fujian, Fuzhou

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 06期

关键词：

biomass; catalyst; degradation; dyestuff; iron/nitrogen co-doping; peroxymonosulfate;

D O I：

10.16085/j.issn.1000-6613.2022-1516

中图分类号：

学科分类号：

摘要：

Loofah sponge has a natural three-dimensional porous structure, making it an ideal precursor for the preparation of biomass-derived heteroatom doped porous carbon. In this study, the loofah sponge, urea, and ferric sulfate nonahydrate were used as the carbon source, nitrogen source, and iron source, respectively. After simple impregnation and high-temperature carbonization, iron/nitrogen co-doped porous carbon (Fe@NC) was successfully prepared. The characterization results of SEM, XRD, and Raman showed that the prepared Fe@NC maintained the porous structure of biomass precursor, and the Fe/N co-doping was beneficial for improving the specific surface area and defect degree of carbon materials. Then, it was found that Fe@NC could serve as favorable catalysts for PMS activation, resulting in the efficient degradation of RhB. The effects of carbonization temperature, PMS concentration, the dosage of porous carbon, initial pH value of the solution, anions, and humic acid on the RhB removal efficiency were discussed in detail. The results showed that under the optimized conditions, the removal efficiency of RhB in the Fe@NC-800/PMS system would reach 99.9% within 20min and the rate constant was 2.5 times, 12.7 times, and 22.7 times that of Fe@C-800 /PMS, NC-800/PMS, and C-800/PMS systems respectively. Results of the inhibition experiments and EPR analysis revealed that SO4·-, ·OH, and 1O2 were the main active species in the Fe@NC-800/PMS system. The degradation of RhB could be achieved through both radical and non-radical processes. In addition, the cycling experiments demonstrated the good reusability of Fe@NC-800, and the metal leaching could be effectively inhibited. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：3292 / 3301

页数：9

共 35 条

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