Preparation of MnO2/fibrous brucite composite material and its activation of persulfate for rhodamine B degradation

doi:10.19965/j.cnki.iwt.2025-0079

Industrial Water Treatment ›› 2026, Vol. 46 ›› Issue (1): 138-146. doi: 10.19965/j.cnki.iwt.2025-0079

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Preparation of MnO₂/fibrous brucite composite material and its activation of persulfate for rhodamine B degradation

Xianping LUO¹^,²^,³^,⁴^,⁵(), Zhihao LI¹^,⁴^,⁶, Xuekun TANG¹^,²^,³^,⁴, ZiShuai LIU¹^,²^,³^,⁴, Feixiang WANG¹^,⁴^,⁶

^1. Jiangxi Engineering Research Center for Green and Low-carbon Development of Lithium Resources, Ganzhou 341000, China
^2. Jiangxi Provincial Key Laboratory of Environmental Pollution Control of Mining and Metallurgy, Ganzhou 341000, China
^3. School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
^4. Yichun Lithium New Energy Industry Research Institute, Jiangxi University of Science and Technology, Yichun 336000, China
^5. State Key Laboratory of Uranium Resources Exploration and Nuclear Remote Sensing, East China University of Technology, Nanchang 330000, China
^6. School of Software Engineering, Jiangxi University of Science and Technology, Nanchang 330000, China

Received:2025-05-21 Online:2026-01-20 Published:2026-02-03

MnO₂/纤维水镁石复合材料的制备及其活化PMS降解罗丹明B

罗仙平¹^,²^,³^,⁴^,⁵(), 李志豪¹^,⁴^,⁶, 唐学昆¹^,²^,³^,⁴, 刘子帅¹^,²^,³^,⁴, 王飞翔¹^,⁴^,⁶

^1. 江西省含锂资源绿色低碳开发工程研究中心，江西赣州 341000
^2. 矿冶环境污染防控江西省重点实验室，江西赣州 341000
^3. 江西理工大学资源与环境工程学院，江西赣州 341000
^4. 宜春江理锂电新能源产业研究院，江西宜春 336000
^5. 东华理工大学铀资源探采与核遥感全国重点实验室，江西南昌 330000
^6. 江西理工大学软件工程学院，江西南昌 330000

作者简介:
罗仙平（1973— ），博士，教授，E-mail：luoxianping9491@163.com。
基金资助:
江西理工大学博士科研基金资助项目(205200100645); 江西省教育厅项目科技项目(GJJ2200823)

Abstract

Abstract:

By loading MnO₂ on the surface of natural fibrous brucite (FB), an efficient MnO₂/FB nano-composite was successfully prepared and applied to the catalytic degradation of rhodamine B (RhB) in wastewater using peroxymonosulfate (PMS). The prepared MnO₂/FB composite was characterized, and the effects of MnO₂/FB loading and ratio, PMS dosage, pH, and temperature on RhB degradation were systematically investigated. Results indicated that the MnO₂/FB composite exhibited higher catalytic PMS activity compared to either MnO₂ nanoparticles or FB alone. Under reaction conditions of 25 ℃, initial RhB mass concentration of 50 mg/L, MnO₂/FB composite dosage of 1.0 g/L (with n(MnO₂)∶m(FB)=1 mmol∶1 g), and PMS mass concentration of 2.0 g/L, the MnO₂/FB+PMS system achieved RhB degradation rate exceeding 99%. After five cycles of reuse, the system maintained RhB degradation rate above 70%, demonstrating high stability. MnO₂/FB exhibited high PMS catalytic activity across a wide range of pH (2-10). Mechanism studies indicated that SO₄ ^·-, O₂ ^·-, ·OH and ¹O₂ generated by MnO₂/FB composite-catalyzed PMS all participated in RhB degradation, with ¹O₂ playing a dominant role. Synergistic effects between MnO₂ and FB promoted the generation of active species, thereby effectively achieving RhB degradation.

Key words: fiber brucite, manganese dioxide, composite, advanced oxidation, rhodamine B

摘要：

通过将MnO₂负载于天然纤维水镁石（FB）表面，成功制备了一种高效的MnO₂/FB纳米复合材料，并将其应用于催化过一硫酸盐（PMS）降解废水中罗丹明B（RhB）。对制备的MnO₂/FB复合材料进行了表征，并系统考察了MnO₂/FB复合材料投加量及配比、PMS投加量、pH及温度对RhB降解效果的影响。结果表明，相较于单一MnO₂纳米颗粒或FB，MnO₂/FB复合材料展现出更高的催化PMS活性。在反应温度为25 ℃，RhB初始质量浓度为50 mg/L，MnO₂/FB复合材料〔n（MnO₂）∶m（FB）=1 mmol∶1 g〕投加量为1.0 g/L，PMS质量浓度为2.0 g/L条件下，MnO₂/FB+PMS体系对RhB的降解率超过99%。经过5次循环使用，该体系对RhB的降解率仍保持在70%以上，具有较高的稳定性。MnO₂/FB在较宽的pH范围（2~10）内均表现出较高的PMS催化活性。机理研究表明，MnO₂/FB复合材料催化PMS产生的SO₄ ^·-、O₂ ^·-、·OH和¹O₂均参与了对RhB的降解过程，其中¹O₂起主导作用。MnO₂与FB之间的协同效应促进了活性物质的生成，从而实现了对RhB的有效降解。

关键词: 纤维水镁石, 二氧化锰, 复合材料, 高级氧化, 罗丹明B

CLC Number:

X703.1

Xianping LUO, Zhihao LI, Xuekun TANG, ZiShuai LIU, Feixiang WANG. Preparation of MnO₂/fibrous brucite composite material and its activation of persulfate for rhodamine B degradation[J]. Industrial Water Treatment, 2026, 46(1): 138-146.

罗仙平, 李志豪, 唐学昆, 刘子帅, 王飞翔. MnO₂/纤维水镁石复合材料的制备及其活化PMS降解罗丹明B[J]. 工业水处理, 2026, 46(1): 138-146.

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https://www.iwt.cn/EN/Y2026/V46/I1/138

Figures/Tables 14

Fig.1 XRD patterns of fiber brucite and composite materials

Fig.2 SEM images of fiber brucite （a） and MnO₂/FB composite （b）

Fig.3 FTIR spectra of fiber brucite and MnO₂/FB composites

Fig.4 N₂adsorption-desorption isothermal curves（a） and pore size distribution curves（b） of fiber brucite and composite materials

Fig.5 Catalytic performance of MnO₂/FB composites with different ratios in PMS-activated degradation of RhB

Fig.6 Effect of MnO₂/FB （1∶1） composite dosage on the activation of PMS for RhB degradation

Fig.7 Effect of PMS dosage on the degradation of RhB in the MnO₂/FB+PMS system

Fig.8 Effect of solution pH on the degradation of RhB in the MnO₂/FB+PMS system

Fig.9 Effect of reaction temperature on the degradation of RhB in the MnO₂/FB+PMS system

Fig.10 Cyclic performance of MnO₂/FB composites

Fig.11 Effect of common anions on the degradation of RhB in MnO₂/FB+PMS system

Fig.12 Effect of different quenchers on the degradation of RhB in MnO₂/FB+PMS system

Fig.13 EPR profiles of radical adducts in different systems

Fig.14 Schematic mechanism of RhB degradation by MnO₂/FB+PMS system

References 19

[1]	IGHNIH H， HAOUNATI R， OUACHTAK H，et al. Efficient removal of hazardous dye from aqueous solutions using magnetic kaolinite nanocomposite：Experimental and Monte Carlo simulation studies［J］. Inorganic Chemistry Communications，2023，153：110886. doi:10.1016/j.inoche.2023.110886
[2]	余萱. 曲霉真菌降解偶氮染料和抗生素的机理和应用研究［D］. 兰州：兰州大学，2022.
	YU Xuan. Mechanism and application of degradation of azo dyes and antibiotics by Aspergillus fungi ［D］. Lanzhou：Lanzhou University，2022.
[3]	石冬妮，李慧玲，滕然，等. Fe₃O₄基类Fenton催化剂的改性及应用研究进展［J］. 工业水处理，2023，43（7）：41-52.
	SHI Dongni， LI Huiling， TENG Ran，et al. Progress in modification and application of Fe₃O₄-based Fenton-like catalysts［J］. Industrial Water Treatment，2023，43（7）：41-52.
[4]	刘芳芳，牛继南. 焙烧温度对纤维水镁石矿物学特征的影响研究［J］. 岩石矿物学杂志，2024，43（1）：89-99.
	LIU Fangfang， NIU Jinan. Study of the effect of roasting on the mineralogical characteristics of fibrous brucite［J］. Acta Petrologica et Mineralogica，2024，43（1）：89-99.
[5]	李珏秀，施启旭，赵锐，等. 锰基催化剂用于活化过硫酸盐降解有机废水的研究进展［J］. 环境化学，2023，42（11）：3861-3877.
	LI Juexiu， SHI Qixu， ZHAO Rui，et al. Research progress on manganese based catalysts for activating persulfate degradation of organic wastewater［J］. Environmental Chemistry，2023，42（11）：3861-3877.
[6]	YANG Yusong， ZHAO Ying， ZONG Yuan，et al. Activation of peroxymonosulfate by α-MnO₂ for orange Ⅰ removal in water［J］. Environmental Research，2022，210：112919. doi:10.1016/j.envres.2022.112919
[7]	ZHAO Mengjiu， XU Ruishuang， CHEN Zhengqiang，et al. Kinetics and mechanisms of diniconazole degradation by α-MnO₂ activated peroxymonosulfate［J］. Separation and Purification Technology，2022，281：119850. doi:10.1016/j.seppur.2021.119850
[8]	张拔群. 纤维水镁石基过一硫酸盐催化剂的制备及其催化性能研究［D］. 赣州：江西理工大学，2024.
	ZHANG Baqun. Preparation of fiber magnesite-based perovskite catalyst and its catalytic performance［D］. Ganzhou：Jiangxi University of Science and Technology，2024.
[9]	YANG Huaming， XIAO Yu， LIU Kun，et al. Physicochemical dispersion of chrysotile［J］. Colloids and Surfaces A：Physicochemical and Engineering Aspects，2007，301（1/2/3）：341-345. doi:10.1016/j.colsurfa.2006.12.071
[10]	董发勤，张宝述，王维清，等. 天然纤维水镁石阻燃剂的复合性能研究［J］. 非金属矿，2009，32（6）：33-36.
	DONG Faqin， ZHANG Baoshu， WANG Weiqing，et al. Study on composite performances of natural fibrous brucite flame retardant［J］. Non-Metallic Mines，2009，32（6）：33-36.
[11]	TOMBOC G M， JADHAV H S， KIM H. PVP assisted morphology-controlled synthesis of hierarchical mesoporous ZnCo₂O₄ nanoparticles for high-performance pseudocapacitor［J］. Chemical Engineering Journal，2017，308：202-213. doi:10.1016/j.cej.2016.09.056
[12]	YUAN Ruixia， WANG Zhaohui， HU Yin，et al. Probing the radical chemistry in UV/persulfate-based saline wastewater treatment：Kinetics modeling and byproducts identification［J］. Chemosphere，2014，109：106-112. doi:10.1016/j.chemosphere.2014.03.007
[13]	LI Shijie， CAI Mingjie， WANG Chunchun，et al. Ta₃N₅/CdS core-shell S-scheme heterojunction nanofibers for efficient photocatalytic removal of antibiotic tetracycline and Cr（Ⅵ）：Performance and mechanism insights［J］. Advanced Fiber Materials，2023，5（3）：994-1007. doi:10.1007/s42765-022-00253-5
[14]	PENG Jiali， LU Xiaohui， JIANG Xia，et al. Degradation of atrazine by persulfate activation with copper sulfide（CuS）：Kinetics study，degradation pathways and mechanism［J］. Chemical Engineering Journal，2018，354：740-752. doi:10.1016/j.cej.2018.08.038
[15]	LUTZE H V， KERLIN N， SCHMIDT T C. Sulfate radical-based water treatment in presence of chloride：Formation of chlorate，inter-conversion of sulfate radicals into hydroxyl radicals and influence of bicarbonate［J］. Water Research，2015，72：349-360. doi:10.1016/j.watres.2014.10.006
[16]	LI Huarui， TIAN Jiayu， XIAO Feng，et al. Structure-dependent catalysis of cuprous oxides in peroxymonosulfate activation via nonradical pathway with a high oxidation capacity［J］. Journal of Hazardous Materials，2020，385：121518. doi:10.1016/j.jhazmat.2019.121518
[17]	REN Xuechang， AN Ju， DING Suying，et al. High efficiency degradation of RhB by MIL-88A（Fe）/MoS₂ activated persulfate and its mechanism［J］. Journal of Solid State Chemistry，2025，341：125027. doi:10.1016/j.jssc.2024.125027
[18]	YANG Xiaohan， LAN Ziwei， WANG Gui，et al. Dynamic activation of PMS by CoNi-Zn（OH）₂/MnO₂ micromotors for efficient degradation of phenolic pollutants［J］. Separation and Purification Technology，2025，361：131507. doi:10.1016/j.seppur.2025.131507
[19]	ZHANG Hongmin， WANG Xudong， LIN Yujing，et al. Highly-efficient peroxymonosulfate activation by porous nano-MgO for tetracycline degradation：Surface hydroxyl groups and oxygen vacancies synergetic mediated nonradical process［J］. Process Safety and Environmental Protection，2024，190：560-573. doi:10.1016/j.psep.2024.07.082

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