INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2015
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IF 2.587
Jianjun Du,Zhenkuan Wang,Xiaojun Peng,Jiangli Fan
A simple, fast, and convenient colorimetric sensing system is presented for melamine recognition in milk samples by thymine-derivative- (NT-) decorated gold nanoparticles (AuNPs), based on the complementary hydrogen bond between thymine and melamine, wherein the introduction of melamine causes a rapid and obvious red-to-blue color change. Therefore, the melamine content in milk can be qualitatively recognized by the naked eye and quantitatively measured by measuring absorbance. NT-AuNPs show excellent selectivity to melamine against any other tested molecules, anions, and metal ions, as well as very good sensitivity that can distinguish melamine-contaminated milk from safe milk with a limit of detection of 3.5 nM.
研究领域:
分析化学
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食品科学
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纳米技术
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Yingying Kou,Zhuang Wu,Chenling Yan,Jinggang Wang,Fan Liu,Donghai Yuan
Development of a new sensor for the simple detection of Hg 2+ , which improves on the shortcomings of conventional mercury detection.The size of the nanogold(AuNPs) particles was controlled by controlling the amount of sodium citrate and gold salt. AuNPs was also functionalized by arginine and melamine. The functionalized nanogold was sensitive and selective for Hg 2+ . It is also useful in real water samples. The 32 nm nanogold modification had the lowest limit of detection (LOD). The melamine-functionalized 32 nm AuNPs had a LOD of 4.17 μmol/L, which was better than the arginine-functionalized 32 nm AuNPs with a LOD of 5 μmol/L.
研究领域:
分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Beibei Zhang,Jin Li,Lihua Zhang,Xiutian Wang,Shuting Xie,Jiahao Quan
Separating waste oil spills is a global challenge in environmental governance. Adsorption separation technology, with its simplicity of operation, broad separation range, small footprint, and high efficiency, has attracted increasing attention. Silane coupling agents are commonly employed as hydrophobic modification materials in adsorption separation. However, the effects of silane chain length on performance remain unclear. This study aimed to elucidate the effects of different silane chain lengths on oil-water separation performance. A silane-modified melamine sponge was developed for oil-water separation. The adsorption performance was evaluated using four oil solvents: dichloromethane , n-hexane, heptane, and petroleum ether. The effects of silane chain length on adsorption capacity were investigated, followed by the optimization of parameters for achieving a superhydrophobic sponge with high adsorption capacity. The results indicated that short-chain silane-modified sponges exhibited notable hydrophobicity and high performance. Besides, the contact angle of oil and water on pristine sponge surfaces was nearly 0°, it reached 0° and 149.8°, respectively, on short-chain trimethoxysilane-modified sponges. The adsorption capacities of these modified sponges achieved 120.68 g·g −1 , 93.5 g·g −1 , 59.0 g·g −1 , and 34.3 g·g −1 for heptane, dichloromethane, n-hexane, and petroleum ether, respectively. Adsorption kinetic results confirmed that the adsorption capacity of trimethoxysilane-modified sponges aligned well with both pseudo-first-order and pseudo-second-order kinetics models, indicating a rapid adsorption rate. Furthermore, the sponge demonstrated consistent separation performance under acidic and alkaline conditions.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
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2023
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IF 3.2
Wang Wei,Song Xiangning,Xie Yan,Sheng Xuejia,Zhang Shucai
In recent years, oil spills and organic pollution have caused severe damage to the ecological environment. Therefore, the treatment of oily wastewater has become a serious challenge. Here, with the help of melamine foams as a substrate, MXene nano-rough structures were built, and cetyltrimethoxysilane was grafted onto their surfaces to create an oil-absorbing material that is both user-friendly and effective at oil-water separation. Due to the nano structures of MXene were constructed and the long-chain silanes were modified on the foam surface, the material became superhydrophobic. In addition to being able to selectively absorb oils from an oil/water mixture (including emulsified oils) up to 111 times its weight, the modified foam was found to have a water contact angle of 157 which could selectively absorb oil but not water. Furthermore, it demonstrated sustained hydrophobicity and lipophilicity after experiencing strong acid/alkali or prolonged high-temperature treatment, allowing for various scenarios where oil-water separation can be used in severe settings without compromising performance.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
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IF 6.361
Hualun Li,Ye Li,Yuzhi Zhou,Bolin Li,Dongbin Liu,Hanyang Liao
In this study, we prepared a hydrothermal carbon-based supramolecular organic framework (HTC-MA-TMA) by grafting melamine and trimesic acid on hydrothermal carbon (HTC) for efficient removal of U (VI) from aqueous solutions. The nano-sized supramolecular organic framework (SOF) particles consisted of N-donor-containing melamine and O-donor-containing trimesic acid self-assembled through hydrogen bonds . Their large number of specific active sites acted as the immobilization center for capturing U (VI). Chemical modification facilitated the dispersion of the SOF particles on HTC, which was synthesized using a novel covalent/non-covalent bond strategy. The HTC-MA-TMA adsorbent exhibited exceptional U (VI) adsorption capacity (271.83 mg/g) because of the coordination interaction between UO 2 2+ and its ligands (amino, carboxyl and amide groups). The adsorption equilibrium was achieved within 30 min and followed a pseudo-second-order equation, suggesting the occurrence of a chemical adsorption process . Furthermore, the U (VI) ions adsorbed onto the HTC-MA-TMA adsorbent could be easily desorbed using 0.1 M HNO 3 solution. This regeneration caused no significant decrease in the sorption capacity of the adsorbent. These results suggest that advanced HTC-MA-TMA adsorbent can be applied in the nuclear-fuel industry for extracting U (VI) from radioactive wastewater .
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
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2014
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IF 2.633
Meng Zhang,Jinwen Zhang,Shuigen Chen,Yonghong Zhou
In this work, a melamine and cardanol-derived Mannich base polyol (MCMP) was synthesized via a two-step process. First, cardanol was allowed to react with paraformaldehyde melamine and diethanolamine to yield mixed Mannich bases which were subsequently propoxylated to give the MCMP. Rigid polyurethane foams (RPUFs) were prepared using MCMP and a polyisocyanate. Effects of expandable graphite (EG), ammonium polyphosphate (APP) and diethyl ethylphosphate (DEEP) on the flame retardancy, mechanical properties , thermal stability and morphology of the resultant RPUFs were studied. It was demonstrated that the melamine incorporated into the MCMP molecular structure increased the thermal stability and the flame retardancy of the RPUF. The fire resistance of the foam could be further enhanced by the addition of flame retardants . EG is more effective than APP and DEEP in enhancing the limiting oxygen index of MCMP-based RPUFs. The flame-retardant-filled RPUFs display a better compressive strength , thermal stability, char residue, heat release and smoke emission than does the non-filled foams.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
THIN SOLID FILMS
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2025
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IF 2
Shanshan Duan,Hua Meng,Guanda Yang,Dirk W. Schubert
In this study, nickel-plated melamine sponge composites were prepared via a simple autocatalytic deposition for potential applications in flame resistance, electromagnetic absorption, and strain/pressure sensing. Commercial melamine foams were used as the base material, and nickel plating was achieved through a controllable process involving sensitizing, activating, and autocatalytic plating steps. The obtained Ni@Sponge composites were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and thermal gravimetric analysis (TGA) to collect the structure and thermal information. SEM images reveal uniform nickel distribution on the surface of the Ni@Sponge-High skeleton without significant structural deformation. Energy dispersive X-ray spectrometer (EDS) and FTIR analysis results confirm the nickel deposition, while TGA indicates enhanced thermal stability in the nickel-plated composite samples. Flame resistance tests demonstrate improved fire retardancy in the nickel-plated samples compared to that of the original sponge. Moreover, excellent electromagnetic absorption and strain/pressure sensing capabilities of Ni@Sponge-High based electronic sensors were observed, showcasing the potential applications of the composites in future human-machine interaction and artificial intelligence fields.
研究领域:
材料科学
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传感器技术
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电磁学
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热力学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2023
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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.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Tianyi Hang,Chenhui Xu,Jiahui Shen,Jiajia Zheng,Lijie Zhou,Mengjia Li,Xiping Li,Shaohua Jiang,Pingan Yang,Wei Zhou,Yiming Chen
Nowadays, functional electronic devices with excellent flexibility and thermal management capability for effective electromagnetic wave absorption are urgently in demand. Herein, a novel and highly flexible silver nanowire (AgNW)/iron nanowire (FeNW) decorated melamine composite foam (AgFe-MF) was prepared via simple dip-coating process. Owing to optimal impedance matching, synergistic dielectric and magnetic losses as well as three-dimensional porous structure, the AgFe-MF with an ultra-low filler content (0.22 vol%) exhibited an outstanding minimum reflection loss of −69.61 dB, and the best effective absorption bandwidth ( EAB ) could reach up to 6.37 GHz. Importantly, the EAB of long-time working AgFe-MF was enhanced to 7.01 GHz after 1000 compress-release cycles under 40 % strain. Besides, it also featured considerate Joule heating capacity and achieved a saturation temperature of over 85.7 ℃ under 2.6 V voltage. The impressive thermal isolation and long-term stability ensured the safety used as portable heater. Therefore, this work will provide a vital slight for fabricating smart wearable electronic devices with integrated anti-electromagnetic radiation and personalized thermal management performances towards potential thermal and health threats.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
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2024
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IF 6.5
Yunyirui Liu,Changhua Li,Rongkai Wu,Jixin Gong,Bihe Yuan
Enhancing flame retardancy and fire-warning capabilities of thermal insulation materials used in building external walls is crucial for ensuring fire safety as well as guarding people's lives and assets. Herein, we have developed an environmentally friendly nano-coating that possesses flame-retardant and early-warning properties by integrating graphene oxide (GO) and attapulgite (ATP) onto melamine foam (MF) through a layer-by-layer self-assembly method (LBL). The GO-ATP-MF composite demonstrates a rapid response to flame (<1 s) due to GO's thermally induced reduction. Additionally, ATP's synergistic flame-retardant effects on both gas and condensed phases contribute to outstanding flame retardancy, enabling an enduring fire alarm duration (>1330 s). The warning duration time of this composite surpasses the majority of GO-based fire-warning nano-coatings reported to date. Moreover, incorporating a Bluetooth wireless transmission system facilitates real-time fire information sharing among smart devices, thereby optimizing fire signal transmission efficiency. Thus, this study advances GO-based flame-retardant nano-coatings and devices with high sensitivity and prolonged fire-warning capabilities, providing an innovative idea to enhance the fire safety of MF as a thermal insulation material.
研究领域:
材料科学
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消防安全
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纳米技术
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
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2022
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IF 8.907
Nianben Zheng,Chenglong Zhang,Ruijin Fan,Zhiqiang Sun
Phase change material (PCM) based passive cooling techniques are attractive candidates for thermal management of lithium-ion batteries due to the merits of low energy consumption and low cost. However, the commonly used solid-liquid PCMs suffer from leakage and poor thermal conductivity , limiting their wide applications. Herein, we report a novel composite PCM (CPCM) with melamine foam (MF) as the supporting matric, lauric acid as the PCM, and aluminum nitride (AlN) as the thermal conductivity enhancer. The CPCM presents a good anti-leakage feature, and AlN increases the thermal conductivity of the CPCM by 54.17% with a mass fraction of 15%. As a result, the CPCM with 15% AlN shows the best thermal management performance that the maximum battery surface temperature and the temperature difference can be decreased by 24.96% and 83.97% at a 3 C discharging rate compared to those without CPCM. Further, the maximum battery surface temperature is within 47.74 °C, and the temperature difference is no more than 0.34 °C under the cycling discharge-charge tests. The findings of the present work open up new opportunities to develop high-performance and reliable CPCMs for the thermal control of lithium-ion batteries, especially at high discharging rates.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Enyuan Hu,Yingwen Zhu,Haiyun Li,Cheng Deng,Bo Cui,Lei Zhao,Jinhui Wu,Xinmiao Wang,Mengfu Zhu
Noise pollution has been recognized as having negative impacts on human psychological and physiological health. Common porous sound-absorbing materials are often limited by low sound absorption coefficient (SAC), excessive thickness, and poor moisture resistance or mechanical properties. Herein, poly(urethane-imide) and melamine foam (MF) were successfully combined for the first time using hydrothermal synthesis and ambient drying to fabricate a poly(urethane-imide)/melamine (PUI/MA) aerogel with a multi-stage pore structure and a core–shell framework. The introduction of PUI reduces pore size and increases tortuosity, thereby enhancing thermal and viscous losses of sound waves. Compared to unmodified MF, the noise reduction coefficient of PUI/MA aerogel achieves an 80 % improvement. Furthermore, numerical microstructural modeling calculations show that the JCA model’s predictions are more consistent with the SACs of PUI/MA aerogels. In addition to significantly improving SAC, the core–shell structure endows the composite aerogels with a compressive Young’s modulus up to 30 times that of MF, a water contact angle over 120°, and a thermal conductivity of less than 60 mW/m/K at 150 °C. The facile and cost-effective fabrication process, superior broadband sound absorption, and excellent fundamental properties suggest that PUI/MA aerogel is a promising candidate for noise mitigation in residential, rail transport, and industrial applications.
研究领域:
材料科学
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声学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）