RSC Advances
·
2015
·Vol. 5
·期 78
·63650-63654
·
IF 3.84
Qiyi Lu,Juanjuan Zhang,Yuanya Wu,Shihong Chen
In this work, the anodic electrochemiluminescence (ECL) behavior of water-soluble poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO), is firstly studied with Na2C2O4 as a coreactant using cyclic voltammetry and ECL measurements. The possible anodic ECL mechanism of PFO–C2O42− system is proposed. Based on the fact that the melamine could efficiently quench the ECL signal of the PFO–C2O42− system, a new ECL sensing method for melamine was developed with a wide linear range from 9.0 × 10−11 to 1.1 × 10−8 M. Furthermore, the sensor exhibited high sensitivity and good stability. Due to the excellent ECL behavior, the PFO–C2O42− system could be a promising platform for constructing ECL sensors.
研究领域:
分析化学
·
环境科学
·
食品科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Tao Liu,Fengmin Ma,Zeyi Shi,Guijian Guan,Ming-Yong Han
We report a hydrothermal strategy to synthesize uniform manganese dioxide (MnO2) nanoribbons using melamine as both a self-assembling template and a mild reducing agent. Melamine self-assembles into a two-dimensional melamine–cyanuric acid (MCA) supramolecular network that directs the growth of MnO2 nanoribbons, and its partial oxidation (by permanganate) facilitates the nanoribbon formation. Systematic experiments confirm that melamine is essential for obtaining the nanoribbon morphology, and factors such as hydrothermal temperature, reaction time, and reactant concentrations significantly influence the outcome. The as-prepared MnO2 nanoribbons exhibit strong photosensitivity and a rapid photothermal response, reaching an equilibrium temperature of ∼101.4 °C under one-sun illumination in 60 s. When incorporated as the conductive filler in an electrothermal coating, a small loading of MnO2 nanoribbons (0.5 wt %) achieves rapid and uniform Joule heating up to 147.3 °C at a low DC bias of 8 V─much higher than a similar coating prepared with MnO2 nanoparticles synthesized without melamine. The nanoribbon-based coating maintained a stable equilibrium temperature over 10 on/off cycles, demonstrating excellent thermal stability. Furthermore, a composite of the nanoribbon coating with a polyester (PET) film could melt an ice particle within 30 s and completely evaporate it within 120 s at 8 V. These results indicate that MnO2 nanoribbon-based electrothermal coatings are promising for efficient low-voltage indoor heating and outdoor deicing applications.
研究领域:
材料科学
·
纳米技术
·
能量转换
·
热工工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jinrong He,Wei Qu,Yun Feng,Jinrui Jiang,Jiaming Luo,Yuzhang Wu,Limin Peng
Melamine-impregnated paper, a decorative material in furniture and interior design, could potentially impede the spread of indoor bacteria if it possesses antibacterial properties. Here, nano Ag-doped ZIF-8 (Ag@ZIF-8) was synthesized using ion exchange and in-situ chemical reduction strategies, followed by incorporating it into melamine-impregnated paper. The ion exchange mechanism of Zn 2+ and Ag + during ion exchange reactions was investigated. The structure of Ag@ZIF-8 was well-defined, with Ag nanoparticles evenly distributed on the surface of ZIF-8. Ag@ZIF-8 showed good thermal stability at 400 °C, meeting the requirements for the hot-pressing process of the melamine-impregnated paper. Ag@ZIF-8 exhibited enhanced ROS generation under visible light compare to ZIF-8, which was attributed to its reinforced light absorption and charge carrier separation facilitated by the localized surface plasmon resonance (LSPR) effect. The antibacterial activity of Ag@ZIF-8 was better than ZIF-8, owing to the multiple-synergistic antibacterial mechanisms of the ion release and ROS generation. Specifically, the 10-Ag@ZIF-8 exhibited MIC of 128 μg/mL and 64 μg/mL against E. coli and S. aureus , respectively. The signal intensity of •O 2 − induced by 10-Ag@ZIF-8 was 4.38 times higher than that of ZIF-8. As the addition of Ag@ZIF-8 increased, the antibacterial performance of melamine-impregnated paper improved. Considering the antibacterial property and economy of melamine-impregnated paper, 0.20 wt% was the optimal amount for 10-Ag@ZIF-8 decorated blockboard. This study proposes a novel approach for synthesizing MOF-based melamine-impregnated paper with antibacterial properties, aiming to reduce bacterial spread, minimize disease risks, and contribute to lowering overall healthcare costs.
研究领域:
材料科学
·
微生物学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2024
·
IF 2.8
Bo Wang,Qiaowen Yang,Ting Li,Sifan Cui,Pengqiang Feng,Xuan Hou
BACKGROUND Selective catalytic reduction (SCR) can effectively remove NO x from flue gas in a coal-fired power plant. As the core of SCR technology, the catalyst has a limited lifespan. The process of reducing acid leaching and roasting water leaching can efficiently extract vanadium and tungsten from spent SCR catalyst. For vanadium recovery in solution, the traditional vanadium precipitation process by NH 4 Cl has the disadvantages of consuming high precipitant dosage and producing large amounts of waste water. RESULTS This study focused on the vanadium precipitation process using a solution containing vanadium obtained from adopting some steps to handle the spent SCR catalyst. First, melamine was screened out as the vanadium precipitant. Then, the vanadium precipitation conditions were optimized as follows: solution pH value of 1.0, n (C 3 H 6 N 6 )/ n (V) = 0.8, 110 °C and 30 min. Under the best precipitation conditions, the vanadium precipitation efficiency of melamine can reach 99.32%. Finally, the mechanisms of vanadium precipitation by NH 4 Cl and melamine were discussed, respectively. CONCLUSION The results showed that the vanadium precipitation process by NH 4 Cl followed the chemical reactions between NH 4 + and vanadium ions, while the vanadium precipitation process by melamine followed the redox and complexation reactions which essentially belonged to the types of chemical adsorption. The vanadium precipitation product was roasted at 550 °C for 2 h to obtain the vanadium product. The main component of the vanadium product was V 2 O 5 , with a purity of 93.27 wt%. The total recovery efficiency of vanadium from spent SCR catalyst was 78.24%. © 2024 Society of Chemical Industry (SCI).
研究领域:
环境科学
·
化学工程
·
材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Honghui Zeng,Yuchi Zhang,Huazhong Wu,Yuansong Ye,Weiying Zhang,Run Fang
The frequent occurrence of petrochemical spills and the uncontrolled discharge of oily industrial wastewater have caused serious water pollution problems. In this study, a novel modified melamine sponge, namely U-HDA@MS, was prepared by a simple, environmentally friendly, and cost-effective method using urushiol, a natural polymer, as the major modifier. The reaction mechanism of the precipitation copolymerization of urushiol and 1,6-hexamethylenediamine (HDA) and the in-situ deposition of the copolymer were investigated by chemical structure and microscopic morphology analyses. It was found that the self-polymerization of urushiol and the copolymerization of urushiol and HDA produced ethanol-insoluble copolymers. Subsequently, the deposition of the copolymers formed a coating with a micro/nano hierarchical structure and a large number of hydrophobic groups on the sponge skeleton, making U-HDA@MS highly hydrophobic and oleophilic. The water contact angle reached 145° without silanization modification, and the absorption capacity for carbon tetrachloride was up to 122 g/g. The outstanding chemical stability of the deposited coating made U-HDA@MS durable in harsh conditions. It maintained stable hydrophobicity and high absorption capacity over a wide pH range. Absorption-squeezing and continuous absorption experiments verified the outstanding reusability and oil-water selectivity of U-HDA@MS. This demonstrates its promising application in oil-water separation and petrochemical spill cleanup.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Zhilong Zhu,Hongxiang Ou,Honglai Xue,Fang Zhu
To enhance the oil–water separation performance and stability of melamine sponge (MS), stearic acid-grafted attapulgite (SA-g-OATP) was synthesized via silanization and amidation grafting. The hydrophobic sponge (MS-POS) was fabricated by dip-coating MS in a polydimethylsiloxane (PDMS) solution containing SA-g-OATP. Characterization confirmed a grafting rate of 20.73%. The synergy between SA-g-OATP and PDMS constructed a hierarchical “micron skeleton-nanoparticle” rough structure. The optimal sample, MS-POS1-1, exhibited superhydrophobicity with a water contact angle of 159.34° and achieved high adsorption capacities for oils and solvents, reaching 112.33 g/g for palm oil. In gravity-driven tests, it showed separation efficiencies above 98.34% for oil–water mixtures and effectively separated water-in-oil emulsions. The sponge demonstrated robust stability, retaining hydrophobicity after 40 cycles of tape-peeling or sandpaper abrasion, and withstanding prolonged immersion in pH 2–12 solutions. The adsorption capacity remained above 89.70% after 20 consecutive adsorption-extrusion cycles. Developed from low-cost materials via a simple process, MS-POS exhibits high adsorption capacity, excellent selectivity, and robust stability, showing significant potential for oily wastewater remediation.
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DOI
高影响因子
POLYMER
·
2026
·
IF 5.1
Weizhen Huang,Jieyu Xue,Qiyue Xiao,Ruohan Zhao,Yuanrong Ding,Jianxun Zhang,Zhou Chen,Yong Yang
Noise pollution has long been a critical challenge affecting daily life and industrial activities. Porous materials, such as melamine foam, are widely used for noise reduction due to their excellent sound absorption, low density, and facile processability. However, their sound absorption properties are often limited by the control of thickness or quality in practical applications. This study presents a polydopamine (PDA) mediated surface modification approach, in which zeolitic imidazolate framework 67 (ZIF67) are grew on melamine foam (MF) to enhance its acoustic and mechanical properties. The ZIF67/PDA/MF composite (ZPM) possesses outstanding acoustic performance with a best noise reduction coefficient (NRC) of 0.64, while maintaining sound transmission loss (STL) values exceeding 15 dB above 500 Hz and reaching a maximum of 30.95 dB at 6400 Hz. And it attains a maximum modulus of 35.1 kPa at 60% strain. These improvements stem from the optimized foam skeleton structure, micropores formed via ZIF67 deposition, and increased surface roughness that reinforces the interfacial friction damping effect. This simple yet versatile strategy can be extended to other porous materials, demonstrating significant potential for noise control in industrial, architectural, and transportation applications.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2025
·
IF 1.6
Luping Gu,Cun Wang,Lei Ni,Zhiquan Chen,Danfeng Zhang,Juncheng Jiang,Yuanyuan Wang
To suppress thermal runaway during the synthesis process of tert -butyl peroxybenzoate (TBHB), phase change microcapsules (microPCMs) were prepared using paraffin as the core material and melamine-formaldehyde resin (MF) as the wall material via in situ polymerization. When the emulsification time was 20 min, the reaction temperature was 80 °C, and the paraffin mass was 10 g, the characterization of SEM, Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and x-ray photoelectron spectroscopy (XPS) confirmed that the microPCMs were successfully fabricated, with microcapsule encapsulation rate reaching 62.5 %. The investigation into the thermal runaway suppression effect of microPCMs during the synthesis of TBPB revealed that adding 5 g of microPCMs at 50 °C optimized overtemperature suppression, reducing the maximum temperature of the reaction system from 58.3 °C to 50.3 °C. This work expands the application of microPCMs in semi-batch reactions and has significant implications for the prevention of thermal runaway incidents.
研究领域:
材料科学
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化学工程
·
热管理技术
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 14
·B1364
·
IF 3.12
Nana Feng,Jie Zhang,Wei Li
The development of a reliable electrochemical sensor for detecting melamine is crucial given the adverse effect of melamine on the health of humans, especially infants. Here, a chitosan (CS)/graphene oxide (GO) nanocomposite was prepared and used as an electrochemical sensor. The morphology of this nanocomposite was characterized by scanning electron microscopy and transmission electron microscopy, and its structure was investigated using Fourier transform infrared spectroscopy and Raman spectroscopy. Electrochemical experiment results showed that CS/GO nanocomposites exhibit excellent sensing properties to melamine and have an ultrahigh sensitivity of 54.6 μA μM−1 cm−2, a linear range of 4–2300 ppb, and a calculated limit of detection of 0.83 ppb. This material also exhibits positive anti-interference property and fairly accurate measurement in real milk, thus ensuring that the present sensing platform can be utilized for practical applications, such as food inspection.
研究领域:
食品科学
·
材料科学
·
分析化学
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Mengjue Cao,Yi Feng,Qian Chen,Pengcheng Zhang,Shihang Guo,Jianfeng Yao
In this study, melamine sponge (MS) is modified by in-situ growth of leaf-like Co-ZIF-L without the addition of additives or surfactants . Such modified MS shows good underwater superoleophobicity because of the unique pore structure and highly rough surface of MS@Co-ZIF-L. Compared to the pristine MS, the water-wetted MS@Co-ZIF-L exhibits excellent water-oil separation for various oils (the separation efficiencies are higher than 99.2%) with good long-term stability (no decrease in flux and separation efficiency after 60 cycles of separation). Moreover, MS@Co-ZIF-L is highly effective to treat oil-water emulsions. Besides the excellent separation performance, due to the outstanding mechanical properties, MS@Co-ZIF-L can be shaped into various configurations such as membranes, filters, adsorbing foams or other forms for the oil/water separation in various situations.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Dongying Deng,Size Zheng,Jinchi Li,Rui Yang,Xinrong Huang,Qian Chen,Jun Xia,Xiaoke Li
Solar-driven interfacial evaporation (SIE) is an innovative and highly effective water treatment method that employs photothermal materials to absorb solar energy and convert it into heat. By concentrating the heat at the water–air interface, SIE avoids the necessity of heating the entire body of water, significantly reducing thermal losses. In this study, we developed a composite material using polyvinyl alcohol (PVA) and sulfobetaine methacrylate (PSBMA) as the framework. And tannic acid (TA), as physical crosslinking, forms more hydrogen bonds with PSBMA and PVA. The coordination interaction between TA and Fe³ ⁺ facilitates the deposition of Fe³ ⁺ on the composite surface, thereby enhancing its light absorption properties. When combined with melamine foam (MF), the composite retains its three-dimensional interconnected structure and exhibits efficient water transport capabilities. When exposed to one-sun irradiation, the composite achieves a light absorption efficiency of 97.6 %, coupled with an evaporation rate of 4.31 kg·m⁻²·h⁻¹ . Additionally, it shows excellent solar desalination capabilities and maintains long-term stability in saline water solutions with concentrations varying from 3.5 to 20 wt%. This study provides an effective solution for addressing freshwater scarcity and wastewater treatment issues.
研究领域:
太阳能脱盐
·
材料科学
·
环境工程
·
光热材料
·
水凝胶复合材料
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Shan Huang,Danyu Lv,Yuhuan Geng,Fuhao Yue,Xinan Zeng,Mengwai Woo,Zhong Han,Ji Ma
Malachite green (MG) is a toxic contaminant commonly found in aquaculture, making its effective removal and detection crucially important. In this study, MIL-100(Fe) was synthesized via a microwave-assisted hydrothermal method under optimized conditions (150 °C, 200 W, 30 min; FeCl₃·6H 2 O:H₃BTC = 2:3). The resulting material exhibited excellent structural stability, a high specific surface area (1169.9 m 2 /g), and a remarkable MG adsorption capacity of 714.29 mg/g. To enable practical application and reusability, MIL-100(Fe) was immobilized onto a melamine sponge (MeS) using polyvinylidene fluoride (PVDF) as binding agent, forming a recyclable MeS/PVDF/MOF composite. When applied for solid-phase extraction of MG in conjunction with UV detection, the composite demonstrated high recovery rates (92.1–99.4 %), a low detection limit (2.29 μg/L), and consistent performance with over 80 % recovery after six reuse cycles in both real fish and wastewater samples. This study presents a simple, efficient and sustainable strategy for the adsorption and detection of MG in aquatic food matrices.
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）