SCIENCE OF THE TOTAL ENVIRONMENT
·
2025
·
IF 8
Shuangmei Liu,Siqi Liu,Jiawei Wang,Jiangwei Ren,Yongxiang Li,Hui Mao
The presence of metronidazole (MNZ) in medical wastewater poses a potential threat to environmental safety and people's health. Herein, we report an innovative strategy to fabricate a recyclable bayberry tannin (BT)-functionalized melamine foam (MF)-supported nanoscale zero-valent iron (MFBT-Fe 0 ) catalyst for efficient MNZ degradation in medical wastewater. The through-pore structure of MF reduced mass transfer resistance in heterogeneous systems, while the amphiphilic BT stabilized nZVI via steric hindrance and chelating interactions and created a high-concentration MNZ microenvironment through hydrophobic combined with hydrogen bonding. The synergistic design overcame the long-standing challenges of mass transfer limitations in heterogeneous systems, nZVI aggregation- and shedding-mediated activity degradation, and the establishment of high-concentration microenvironments for MNZ reductive transformation. Consequently, the highly accessible nZVI catalyst, MFBT-Fe 0 , rapidly removed MNZ, achieving a 96.4 ± 0.82 % removal rate within 90 min, with a degradation capability 2.9-fold higher than the non-BT-functionalized MF-Fe 0 . MFBT-Fe 0 exhibited exceptional cycle stability, maintaining an MNZ removal rate of up to 80 % after 6th cycles. Mechanistic studies revealed contributions from surface complexation, hydrogen bonding, and π-π stacking, with HPLC-MS confirming degradation pathways of nitro reduction, denitrification and hydroxyethyl cleavage. This work provides a sustainable, high-performance catalyst for practical MNZ removal, addressing both efficiency and recyclability challenges in medical wastewater treatment.
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DOI
PubMed
高影响因子
Frontiers of Chemical Science and Engineering
·
2022
·Vol. 16
·期 8
·1247-1258
·
IF 4.803
Li Meng,Fang Yuanfeng,Liu Chun,Zhou Mengmeng,Miao Xiaomei,Pei Yongbing,Yan Yue,Xiao Wenjun,Qiu Huayu,Wu Lianbin
In this study, a durable superhydrophobic/superoleophilic melamine foam was fabricated by a facile and rapid one-step thiol-ene click chemistry and Michael addition reaction, which demonstrated excellent robustness in oil/water separation. First, 1H, 1H, 2H-perfluoro-1-hexene reacted with thiol-functionalized polyhedral oligomeric silsesquioxane via the thiol-ene click chemistry to obtain a fluorinated thiol-functionalized polyhedral oligomeric silsesquioxane solution. Subsequently, the melamine foam was immersed to the solution system to form nanoaggregates on the melamine foam surface by the Michael addition reaction in the presence of ultraviolet light. The micro/nano rough structure and low surface energy of the nanoaggregates layer endowed the pristine melamine foam with superhydrophobicity; the water contact angle was greater than 150°. More importantly, the as-prepared melamine foam could withstand harsh conditions, such as a corrosive solution environment, strong ultraviolet light, mechanical compression, high and low temperature exposure, and ultrasonic washing. Driven by gravity, the as-prepared melamine foam could efficiently separate the oil/water mixtures and maintain 98% separation efficiency at high and low temperatures. In addition, it maintained the desirable absorption capability in different oil/organic solvents even after 15 absorption cycles. Accordingly, this facile, low-cost, and robust one-step method provides important support for the superhydrophobic oil/water separation field.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Lingrui Zhang,Jinling Xie,Xuan Luo,Xiaobo Gong,Meng Zhu
Oil and organic solvent spills have caused serious environmental issues. To address these issues, several novel materials have been developed for the efficient separation of oil/organic solvents from water. In this study, ZIF-8 was loaded onto a melamine foam (MF) skeleton a simple in situ growth method. ZIF-8/MF was modified via a shell-ligand-exchange reaction (SLER) to improve its hydrophobicity. The prepared D-ZIF-8/MF exhibited strong hydrophobicity, with a WCA of 145.1° and an OCA of 0°. D-ZIF-8/MF can absorb up to 68–165 times its weight in oil/organic solvents. D-ZIF-8/MF also exhibited excellent stability, corrosion resistance, recovery, and recyclability. Furthermore, D-ZIF-8/MF has a high oil-water separation efficiency for absorbing organic solvents through a continuous oil-water separation device. This study provides a novel strategy for the preparation of strong hydrophobic foams via surface modification and SLER for oil-water separation. It has immense potential for the scale-up practical treatment of oily wastewater.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Keliang Song,Zhipeng Liu,Aoshuang Yang,Yongsheng Li,Fangfang He,Zhuoni Jiang,Xiaoan Li,Zhengguo Chen,Wenbin Yang
Hydrated salt phase change materials (PCMs) have the advantages of high energy storage density and low cost, and have great application prospects in the field of phase change energy storage. However, the problems of supercooling, phase separation and leakage of hydrated salt PCMs limit their further applications. In this work, we designed and fabricated Cu-coated melamine foam (MF)/barium hydroxide octahydrate (BHO) shape-stabilized phase change materials (SSPCMs) with low supercooling. MF was used as supporting material and Cu as a nucleating agent and thermal conductivity enhancer by loading it onto MF via electroless plating . BHO was then encapsulated into the MF@Cu skeleton through vacuum impregnation to obtain BHO@MF@Cu SSPCMs. The results demonstrated that BHO@MF@Cu SSPCMs not only present very low supercooling degree of 0.12 °C and high thermal energy capacity of 247 J/g, but maintained a latent heat of phase transition of 229.3 J/g with little change in enthalpy after 100 thermal cycles. Moreover, compared to BHO, SSPCMs exhibited high thermal conductivity of 1.687 W m −1 K −1 , excellent shape stability, and thermal cycling stability. In summary, BHO@MF@Cu SSPCMs with low supercooling degree were prepared by electroless plating and vacuum impregnation in this study, which provides a new strategy to reduce the supercooling degree of hydrated salt PCMs.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Xuehui Liu,Fei Tian,Xu Zhao,Rongcheng Du,Shimei Xu,Yu-Zhong Wang
The preparation of oil absorption materials with both low-cost and high efficiency remains a great challenge. In this work, a waste epoxy resins (EPs) derived hydrophobic modifier was developed to fabricate high-efficient oil absorbents by simple dip-coating on melamine foam (MF). EPs were effectively degraded by acid digestion in mild condition to obtain the degradation products (DEPs) with a large molecular weight. DEPs can be directly used as a hydrophobic agent due to excellent hydrophobicity and processability. The resulting DEPs@MF exhibited excellent absorption performance for various oils or organic solvents with an ultrafast adsorption rate of 2 s and high oil absorption capacity of 116 g g −1 . Moreover, the absorbed oils can be recovered by simple mechanical extrusion, and the adsorption capacity of the DEPs@MF did not deteriorate even after it was reused for 10 times. Besides, an oil recovery unit was successfully designed to achieve continuous oil–water separation. This research not only provides a new approach to the preparation of highly efficient and reusable oil-absorbing materials, but also provides new insight into solving the increasingly serious problem of waste thermosetting polymers.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 36
·17730-17739
·
IF 9.931
Rui Zhang,Xiangxia Jing,Yanting Chu,Lei Wang,Wenjun Kang,Denghu Wei,Haibo Li,Shenglin Xiong
A novel monolithic carbon sponge is prepared by a ZnCl2-assisted carbonization of commercial melamine foam (MF) at 800 °C in a N2 atmosphere. The as-prepared nitrogen/oxygen co-doped carbon sponges (NOCSs) can be directly applied as monolithic electrodes for supercapacitors without using any additives. It is found that ZnCl2 activation plays an important role in improving the supercapacitive behavior of NOCSs. Compared with the NOCS without ZnCl2 activation treatment, the optimal NOCS-1/10, obtained with a ZnCl2/MF weight ratio of 1 : 10, has the best capacitive performance due to its unique porous architecture, rich pseudocapacitance-active species, and good electron/ion transfer feature. It exhibits a high specific capacitance (242 F g−1 at a current density of 0.5 A g−1 and 325 F g−1 at a scan rate of 10 mV s−1) and good electrochemical cyclability (97% after 10 000 cycles at 5.0 A g−1). When being further assembled into an all-solid-state supercapacitor (PVA/KOH electrolyte), it can deliver an energy density of 4.33 W h kg−1 at a power density of 250 W kg−1 and 3.13 W h kg−1 at a power density of 3 kW kg−1.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xingyue Wu,Yiping Qiu,Wenrong Cai,Junyao Li,Datong Wu,Laidi Xu,Yong Kong
Melamine foam (MF) supported NiCo 2 S 4 /Ag nanowires (AgNWs) were facilely prepared and used as the compressible electrode for the asymmetric supercapacitor (ASC). AgNWs and NiCo 2 S 4 were successively decorated on the surface of MF by a two-step impregnation approach, and the resultant NiCo 2 S 4 /AgNWs/MF exhibited a high deformation-tolerance and outstanding electrochemical behaviors due to the flexible skeleton of MF, high electrical conductivity of AgNWs and high specific capacitance of NiCo 2 S 4 . More importantly, the nanosized NiCo 2 S 4 could be effectively activated by charging/discharging as the NiCo 2 S 4 nanoparticles were gradually converted into NiOOH and CoOOH nanosheets during the repeated charging/discharging cycles, resulting in significantly high capacitance retention (155 % after 2000 charging/discharging cycles). Finally, an ASC was fabricated by using NiCo 2 S 4 /AgNWs/MF as the cathode and MF supported Ti 3 C 2 T x /AgNWs (Ti 3 C 2 T x /AgNWs/MF) as the anode, which showed a high energy density of 28.8 mWh cm −3 at the power density of 754 mW cm −3 .
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高影响因子
Materials Today Energy
·
2024
·
IF 9
Fei-Feng Mao,Yu-Hua Dong,Yan Zhou,Ming-Shuai Sun,Wei Hui,Duan-jian Tao
Global climate change has driven the scientific community to improve the utilization of a critical C1 resource carbon dioxide (CO 2 ) through carbon capture utilization (CCU) technology. The cycloaddition of CO 2 with epoxides provides perfect atom economy and economic feasibility to produce versatile cyclic carbonates used in various industries. However, the stable nature of CO 2 and epoxides requires highly active catalysts. In this work, the repurpose of nitrogenous waste melamine foams (MF) as high-performance catalysts for the cycloaddition of CO 2 were explored. The pyrolyzed MF were modified with Cu to prepare a series of acid-base bifunctional porous catalysts (MFC-X-Cu). The results demonstrate that the acid-base synergy of the MFC-X-Cu catalysts increases the efficiency of the cycloaddition of various epoxides, yielding target products at 96-99% under mild conditions. Moreover, the characterization results revealed that the superior performance of MFC-X-Cu stems from its hollow structure and acid-base synergy, which are derived from nitrogen species in the repurposed MF and the post-modified copper component. The catalyst maintained consistent catalytic efficiency over five cycles, highlighting its strong recyclability. This work presents an eco-friendly and sustainable approach towards carbon neutrality by utilizing modified waste materials for CO 2 conversion into high-value chemicals.
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高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Pengcheng Zhang,Yi Feng,Mengjue Cao,Jianfeng Yao
Co 9 S 8 nanoparticles (NPs) anchored on carbonized melamine foam with polydopamine derived carbon coating (CMF-Co 9 S 8 -C) was successfully constructed for advanced lithium-ion battery anode. The sandwich-type structure consists of massive Co 9 S 8 NPs and dual N-doped carbon layers that not only accommodate the volume expansion effect but also shortens the transfer distance of Li + / e − . Moreover, the nanocomposite inherits 3D carbon network with hierarchical porous structure, which is beneficial for providing sufficient transport channels and contacting with electrolyte. With the prominent synergistic effects from structure and chemical properties, CMF-Co 9 S 8 -C hybrid compound exhibited high specific capacity of 645 mAh g − 1 at 0.5 A g − 1 after 200 cycles, and it delivered excellent cycling stability (520 mAh g − 1 ) under a high current (2 A g − 1 ) after 1000 cycles.
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DOI
高影响因子
ChemCatChem
·
2018
·Vol. 10
·期 11
·2394-2400
·
IF 4.674
Wenhua Liu,Yuan Gao,Yuping Yang,Quan Zou,Guoxiang Yang,Ziping Zhang,Huifan Li,Yingchun Miao,Hexing Li,Yuning Huo
Graphical Floating foams : A floating BiOBr@graphene oxide@melamine foam composite is developed by using a solvothermal process. The melamine foam provided the transfer channels for organics, the BiOBr nanosheets presented efficient photodegradation of organics, and graphene oxide further improved the light utilization and inhibited charge recombination. In view of the synergistic effect of adsorption and photocatalysis, this composite efficiency realized improved rhodamine B removal with increased concentration. Hierarchical photocatalytic composite BiOBr@graphene oxide@melamine foam was developed by using a solvothermal process. In this composite, the graphene oxide-wrapped melamine foam acted as the substrate for supporting the catalyst, and the BiOBr nanosheets stably combined with the graphene oxide surface in a uniform distribution. This composite could be floated on the solution surface to inhibit the light shielding effect of colorful organic pollutants. Furthermore, the graphene oxide-wrapped melamine foam provided mass transfer channels for organics and enriched the organics in its 3D structure. BiOBr nanosheets presented efficient photodegradation of organics and solved the problem of adsorption saturation of graphene oxide@melamine foam. Graphene oxide could further improve the light utilization, inhibit the recombination of charges, and enrich the organics. In view of the synergistic effect of adsorption and photocatalysis, this catalyst system realized the efficient removal of the organic rhodamine B and presented the promoted amount of contaminant removal with increased rhodamine B concentration.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Pengcheng Ren,RuoYu Yang,Xiaoying Guo,Yang Guo
With the increasing complexity of electromagnetic environments, microwave absorbing materials that combine high-efficiency microwave attenuation with multifunctional capabilities have attracted considerable attention. Herein, porous Ti 3 C 2 T x was pre-constructed through H 2 O 2 etching and subsequently integrated with a dripping–squeezing–drying process and polydimethylsiloxane (PDMS) encapsulation to fabricate multifunctional porous Ti 3 C 2 T x /melamine foam (MF)/PDMS composites. The porous Ti 3 C 2 T x forms a continuous conductive network within the three-dimensional MF scaffold, providing efficient pathways for conductive loss. Meanwhile, the surface functional groups and lattice defects of porous Ti 3 C 2 T x induce dipole polarization and defect polarization, respectively. In addition, the abundant heterogeneous interfaces among MF, porous Ti 3 C 2 T x , and PDMS enhance interfacial polarization, while the three-dimensional porous scaffold further prolongs the propagation paths of electromagnetic waves and promotes multiple reflection and scattering. Benefiting from the synergistic optimization of multiple loss mechanisms and impedance matching, the porous Ti 3 C 2 T x /MF/PDMS composite prepared using a porous Ti 3 C 2 T x dispersion with a concentration of 6 mg/mL (PTMP-6) achieves a minimum reflection loss ( RL min ) of −61.29 dB and an effective absorption bandwidth ( EAB ) of 6.62 GHz, covering the entire Ku band. Moreover, PTMP-6 delivers a radar cross-section (RCS) reduction of 38.9 dB m 2 under normal incidence (0°), demonstrating remarkable radar scattering suppression capability. The low thermal conductivity of PTMP-6 (0.047 W m −1 K −1 ) effectively suppresses heat transfer and endows the composite with favorable infrared stealth performance. Furthermore, the composite foam exhibits excellent compressive resilience and cycling stability over 200 cycles at 70% strain, together with a stable piezoresistive sensing response, favorable flame-retardant performance, and surface hydrophobicity with a water contact angle of 126.4°, demonstrating its potential for practical applications in complex electromagnetic environments. This work provides an effective design strategy for constructing broadband and highly efficient MXene-based microwave absorbing materials with multiple functions.
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DOI
高影响因子
Science China-Materials
·
2026
·Vol. 69
·期 6
·3613-3630
·
IF 7.7
Liu Jinling,Lu Jiayu,Yang Baoqing,Huang Dongyan,Han Zhangqi,Zhang Yan,Wang Bibo,Qi Dongming,Wang Wei
To address the growing need for lightweight and multifunctional stealth materials in modern protective applications, this study presents an innovative melamine foam (MF)-based composite featuring an asymmetric dual-nano conductive network with integrated absorption-dominated electromagnetic interference (EMI) shielding, infrared (IR) stealth, and flame retardant properties. Inspired by Salisbury screen, the composites employ MF as an interlayer and flame-retardant thermoplastic polyurethane (TPU) nanofiber membrane as a substrate. The architecture features a carbon nanotubes (CNTs)-modified impedance matching nanofiber layer as the top absorber and a silver nanoparticles (AgNPs)-modified nanofiber layer as the highly conductive reflective bottom. Precise control of CNTs content and interlayer thickness enables tunable electromagnetic waves (EMWs) absorption, yielding a low reflection (0.03) and high EMI shielding effectiveness (79.23 dB) at 4.40 mm. Even at 1.40 mm, effective absorption-dominated shielding is maintained. And the performance remains stable under ultrasonic, compression, and bending, demonstrating high durability. Especially, the mechanism behind achieving absorption-dominated EMI shielding at a reduced thickness, which relies on destructive interference of EMWs enabled by the asymmetric dual-nano conductive network, is thoroughly elucidated. Additionally, the composite exhibits superior IR stealth and self-extinguishing properties. This work offers a feasible strategy for designing high-performance stealth materials with strong potential for personnel and communication equipment protection.
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DOI
高影响因子
危险品化学品经营许可证（带存储）