JOURNAL OF MATERIALS SCIENCE
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2025
·
IF 3.9
Feng Li,Luan Jishuang,Zhang Wenjuan,He Yangfan,Wang Lulu,Mi Guangxin,Qv Dehu,Chu Qian-Qian,Han Fei,Cheng Bo
Phase change materials (PCMs) can efficiently absorb and release energy while keeping the temperature constant, and thus exhibiting great potential in thermal management applications. However, issues such as liquid phase leakage and poor thermal conductivity of PCMs, particularly prominent in organic ones, have limited their practical application. In this work, we employed polyethylene glycol (PEG) with the phase change temperature of 61.72 °C as PCMs. A poly(phenol-amine) was synthesized via the Schiff base reactions or Michael-type additions using low-cost Catechol and Diethylenetriamine, and was applied to modify the surface of melamine foam (MF). The abundant polar groups and aromatic rings in the poly(phenol-amine) enable strong interactions with both MF and PEG. Additionally, MXene was incorporated to further improve the thermal conductivity of the composite phase change materials (CPCMs). The results demonstrated that the modified MF/MXene/PEG based CPCMs showed negligible leakage when tested at 80 °C for 1 h. They also exhibited an enhanced thermal conductivity of 0.55 ± 0.01 W/m·K with an enthalpy value of 186.4 J/g. Moreover, after 100th thermal cycling and reprocessing, the crystallization behavior and phase transition capability of the CPCMs remained almost unchanged. Furthermore, the introduction of MXene markedly enhanced CPCMs’ light absorption efficiency. These findings indicate that the prepared CPCMs, with their excellent thermal performance, hold substantial potential in energy storage and thermal management applications. Graphical
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ruidan Li,Li Tian,Yujia Song,Yanjia Guo,Guangping Ma,Pengfei Han,Hanyue Jiang,Wenzhuo Wang,Juan Lu
A self-supporting material of ZnNi 2 O 2 was synthesized and halloysite nanotubes (HNTs) served as carriers for Ru(bpy) 3 2+ , enhancing stability of the sensor and improving the electrochemiluminescence (ECL) value in this experiment. The ECL sensor for specific recognition of melamine (MEL) was developed based on ZnNi 2 O 2 and Ru(bpy) 3 2+ @HNTs as dual ECL reagents. The maximum initial signal was obtained in the presence of co-reactant tripropylamine (TPrA) through the synergy of ZnNi 2 O 2 and Ru(bpy) 3 2+ @HNTs. A molecularly imprinted polymer (MIP) containing specific recognition sites for MEL was to enable selective recognition, with pyrrole serving as the functional monomer and MEL as the template molecule. The quenching effect was observed as the concentration of MEL increased. Under optimal conditions, the sensor demonstrated the linear correlation between the change of ECL signal and the logarithm of MEL concentration from the range of 1.0 × 10 −12 to 1.0 × 10 −7 mol·L −1 . Satisfactory results were obtained for the detection of MEL in milk powder.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2020
·Vol. 143
·期 5
·3479-3488
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IF 2.731
Chen Zhongwei,Yu Yuan,Zhang Qingwu,Chen Zhiquan,Chen Tingting,Li Changxin,Jiang Juncheng
Ammonium polyphosphate surface-modified by silane coupling agent (3-aminopropyl) triethoxysilane (KH-550), named STAPP, incorporated with pentaerythritol and melamine to prepare intumescent flame retardant unsaturated polyester resin (UPR/IFRs). Surface groups, surface elements, thermal stability and surface morphology of STAPP were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis (TG) and scanning electron microscopy (SEM). The flame retardancy of the UPR composites was studied by limit oxygen index (LOI), vertical burning test (UL-94) and cone calorimeter test, and its thermal stability was evaluated by TG. The results showed that IFRs greatly improves flame retardancy, thermal stability and carbon formation ability of UPR. Compared with pure UPR, when the loading of IFRs was 25 mass%, the LOI was increased from 19.8 to 41.5%, the UL-94 test reached the V-0 rating from NR, peak heat release rate and total smoke production was decreased by 54.1 and 38.7%. Furthermore, the addition of IFRs delayed the product of smoke and release heat. TG results showed that 27.6 mass% chars remained in UPR/IFRs at 1073 K, showing a good char forming ability. Besides, honeycomb-type carbon layer with few cracks and holes was observed by SEM. Finally, the flame retardancy mechanism of IFRs was elaborated in detail, which was attributed to the siloxy groups and expanded carbon layer.
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CHEMICAL ENGINEERING JOURNAL
·
2023
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IF 15.1
Henghua Zhang,Qianbin Dong,Yaping Tang,Jialing Wu,Wenjian Bi,Yue Gao,Jiabang Wang,Hui Yang
In this work, we proposed a novel strategy for the conversion and storage of photothermal energy. This strategy combined hydrothermally prepared CuS/rGO with commercial epoxy resin adhesives. The light-capturing capability of CuS and fast electron transfer rate of rGO was harnessed to endow the modified resin with photothermal conversion capability. Using an inorganic PCM as the energy-storage medium and melamine foam as its support carrier, a form-stabilized composite phase-change material with a latent heat of phase change of 233.7 J/g and a phase-change temperature of 48.7 °C was obtained. In addition, the pre-prepared MER was coated onto the surface of the CPCM . Its purpose was to utilize the photothermal conversion and waterproof properties of modified resins to store solar energy in the internal phase-change materials, while alleviating the leakage problem during the phase-change process of inorganic salt hydrate phase-change materials in the past. The leakage tests showed that the 1.0 mm thick MER provided excellent protection against leakage, significantly reducing leakage of the liquid phase and moisture escape. The composite phase-change material CPCM/MER demonstrated satisfactory results in photothermal conversion experiments. 2% CuS/rGO addition to CPCM/MER can complete the phase change. The samples also showed good stability in the cycling tests. After 100 cycles of testing, the latent heat of the CPCM only decreased by 5.13%. According to the FT-IR results, the CPCM also possessed chemical stability. In this study, a CPCM/MER was successfully prepared, extending the practical application of traditional inorganic phase-change materials in the field of solar energy storage.
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FOOD CHEMISTRY
·
2025
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IF 9.8
Xu Xu,Shiping Zhao,Mengyang Nan,Lanrui Yang,Jia Lv,Ziling Zhang,Haitao Yang,Wushuai Duan,Baocheng Ji
Matrix adsorbents play a crucial role in the rapid multiresidue detection of pesticides by LC–MS/MS. Herein, we report the development of three functionalized melamine sponges for facile matrix adsorption for rapid analysis of 43 pesticides in five fruits. The matrix purification was optimized to enable rapid operation in seconds via simple soaking and squeezing, eliminating time-consuming centrifugation step commonly required in traditional QuEChERS protocols. Considering the removal efficiencies of pigments, proteins, carbohydrates, and lipids, the combined use of these three sponges yielded superior overall matrix purification performance. Good validation results were acquired for all monitored pesticides in terms of good linearities (coefficient of determination ≥0.993), satisfactory recoveries (70.9 %–118.7 %, 70.8 %–120.0 %, and 70.0 %–114.3 % at three spiked concentrations), and relatively low limits of detection (0.02–5 μg·kg −1 ) and limits of quantification (0.05–10 μg·kg −1 ). The functionalized melamine sponges demonstrated prospective application potentials for the rapid and accurate analysis of multiple pesticides in various fruits.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Wenxuan Zu,Xinye Shao,Mojie Sun,Yu Sun,Ziang Liu,Xinghui He,Tianhong Zhou,Shijie Wang,Xiaojun Zhang
The frequent spills of offshore oil pose a great threat to the ecological environment and human health. Therefore, developing an adsorption material that is efficient, environmentally friendly, and easy to operate in complex environments to replace traditional technologies with low efficiency has become a major challenge in the field of oil-water separation. In this work, a green and superhydrophobic melamine sponge was first developed, inspired by lotus leaves. Then, a core-shell structure of inorganic metal oxide @ metal-organic framework (SiO 2 @ZIF-8) was synthesized by a simple sol-gel method. Finally, the structure was anchored onto the melamine sponge using low-surface-energy polydimethylsiloxane (PDMS), forming a unique hierarchical micro-nano structure. The modified sponge exhibited excellent superhydrophobicity (water contact angle = 156°) and oil adsorption capacity (ranging from 58.5 to 114.3 g/g). It still exhibited perfect mechanical properties, hydrophobicity stability, and thermal stability even under prolonged high temperatures, strong acids/bases, and multiple cycles of extreme compression. Furthermore, the material also demonstrated remarkable flame retardancy, which significantly enhances the safety of the sponge in practical applications. This study provides an efficient and sustainable practical solution for responding to oil spills, with broad application prospects.
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FOOD CHEMISTRY
·
2015
·
IF 3.391
Wei-jun Zhao,Yonghuan Wang,Juan Li,Ling-feng Li,Qi Wang,Ke Han,Yuang Zhang,Xin Li,Peng Li,Jikui Luo,Xiaozhi Wang
This article presents a method for sensitive, fast and quantitative determination of melamine in milk and dairy products using high-field asymmetric ion mobility spectrometry (FAIMS). The solid-phase extraction (SPE) technology was used for purification after the sample was extracted by organic solvents, and followed by the analysis of FAIMS . The measurement parameters and variables that affect the FAIMS detection have been investigated, and optimum conditions have been obtained as follows: the carrier gas flow rate is 1.6 L min −1 , the headspace sampler temperature is 150 °C, the pressure is 1 atm, and the humidity is 2.0 g m −3 . The results showed that the SPE–FAIMS method can detect melamine in samples with a concentration down to 0.1 mg kg −1 . The ion intensity has a linear relationship with melamine concentration in the range from 0.3 mg L −1 to 25 mg L −1 , with a good linearity of 0.9975. The limits of detection (LOD) and limits of quantification (LOQ) are 0.1 mg kg −1 and 0.3 mg kg −1 in milk and dairy products, respectively, and the relative standard deviation is less than 8.0%. The results demonstrated that FAIMS has great potential as a powerful tool for food analysis and safety inspection.
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JOURNAL OF POROUS MATERIALS
·
2023
·Vol. 31
·期 2
·587-596
·
IF 2.6
Chen Jiangwei,Hu Mingyang,Liu Yun
The demand for biomass-modified hydrophobic materials in environmental remediation, particularly for cleaning up spilled oils and organic solvents, has significantly increased. This study introduces a novel approach to enhance the hydrophobic properties of commercial melamine sponge (MS) through a simple immersion strategy employing a tetrahydrofuran (THF) extract solution derived from biomass sources such as corn stove, pine, and Eucalyptus. This modification process yielded a highly hydrophobic absorbent with notable superoleophilicity, capable of absorbing various oils (104 g.g -1 ) and organic solvents (137 g.g -1 ). The resulting modified MS exhibited an expressive oil adsorption capacity, as evidenced by water contact angle exceeding 130°. Notably, its three-dimensional high porosity and micro/nano-structure, conducive to air entrapment, conferred exceptional resilience to mechanical extrusion, harsh temperature treatments, and facilitated recyclability. Additionally, the study explored alternative biomass extraction solutions including γ-valerolactone, N, N-dimethylformamide, acetone, methanol, and ethanol. These solutions were found to be viable modification agents for producing hydrophobic MS through the immersion strategy. Importantly, the hydrophobicity and stability of the modified MS obtained through this method surpassed those of lignin-modified and deep eutectic solvent -extracted lignin-modified MS. This research not only underscores the potential of a facile, cost-effective, and environmentally-friendly dipping approach for enhancing the hydrophobicity of MS, but also opens up new avenues for developing modified MS with superior performance in the cleanup of spilled oils and organic solvents.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Huijie Lv,Haohan Yu,Huayin Zhang,Feng Zhu,Ziyi Wang,Qian Xu,Wenliang Ji
ZIF-8 and polydopamine (PDA) double -modified melamine foam (MF), namely ZIF-8@PDA MF was fabricated using a new in-situ growth method for the co-removal of multiple organophosphorus flame retardants (OPFRs) from environmental water. The resulting ZIF-8@PDA MF exhibited a porous, three-dimensional (3D) cross-linked network in which ZIF-8 evenly distributed on MF via the PDA’s adhesive properties, leading to a 17-fold increase in surface area (from 1.357 to 22.964 m 2 /g) to facilitate mass transfer and target binding. Through experimental confirmation, the mechanisms of hydrogen bonding, π-π, electrostatic and hydrophobic adsorption enable the effective removal of 11 types of OPFRs including aryl-, alkyl- and Cl-OPFRs. Compared to the adsorbents reported previously, ZIF-8@PDA MF achieved higher removal efficiencies (53.8%–99.7%), particularly a 30% improvement for highly polar TEP and TCEP. The adsorption behavior of OPFRs by ZIF-8@PDA MF followed a spontaneous, endothermic process, conforming to the pseudo-second-order model and Langmuir model. The adsorption equilibrium could be reached within one hour, 2-48 times faster than most reported studies (2-48 h). In addition, ZIF-8@PDA MF was demonstrated to efficiently remove multiple OPFRs from raw environmental water and the reusability reached up to four cycles without requiring secondary separation, highlighting its practical applicability.
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PubMed
高影响因子
POLYMER TESTING
·
2022
·
IF 4.931
Ya Xu,Ru Zhou,Gang Ma,Lisha Deng,Huimin Liu,Yanming Ding,Juncheng Jiang
A cobalt metal-organic framework (Co-MOF) was successfully prepared, and its combination with melamine polyphosphate (MPP) was studied to enhance the fire retardant properties of polypropylene (PP) composites. The morphology, composition, and structure of PP/MPP/Co-MOF composites were characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The maximum limiting oxygen index of the PP/MPP/Co-MOF composite was 26.8%, which is 49% higher than that of pure PP and its combustion grade reached the V-0 level. When 2 wt% Co-MOF was added, the carbon residue of the composite reached 19.6 wt%, peak heat release rate was significantly reduced, smoke emission was suppressed, fire growth index was significantly reduced, and the fire risk of the composite was effectively reduced. Analysis of the carbon residue showed that aggregated carbon spheres were present on the carbon residue surface of the composite material supplemented with Co-MOF. The generation of carbon spheres effectively prevented the heat exchange and release of combustible gas during the combustion of the composite material, significantly improving the flame retardancy and stability of the material. As a new material, MOF has great innovation and necessity in researching polymer flame retardant. Moreover, the latest composite materials synthesized in this paper contribute to environmental safety to a great extent.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Tong Zou,Zongxuan He,Yukai Huang,Wenyu Wang,Ruoyu Chen,Meng Guo,Yiqun Wang,Qian Jia
To address the challenge of synergistic treatment of oily wastewater and dye-containing textile effluent, a multifunctional melamine sponge (MTS/ZIF-8@Ce-MOF/MS) inspired by the “rock-gravel-moss” hierarchical structure was presented. A stable MOF-on-MOF heterostructured roughness was constructed through the sequential in situ growth of Ce-MOF and ZIF-8, followed by modification with a fluorine-free silane (MTS), successfully endowing the sponge with superhydrophobicity (WCA of 158°). Molecular dynamics simulations elucidated the molecular origin of this selective wettability, revealing the fundamental driving forces behind the efficient oil-water separation. The modified sponge demonstrated outstanding triple purification capabilities. Its superhydrophobic nature enabled a high saturation adsorption capacity of up to 91.35 g·g −1 for various oils (chloroform) with a separation efficiency >99% and 97.8% capacity retention after 20 cycles. Concurrently, it exhibited efficient demulsification ability for oil-in-water emulsions, increasing the emulsion transmittance by 115–177%. Furthermore, based on the synergistic adsorption mechanism of ZIF-8 and Ce-MOF, it achieved a high removal rate of 94.6% for both anionic and cationic dyes. This work not only provides a high-performance material for the integrated purification of complex wastewater but also offers new insights for the design of environmentally benign, multifunctional MOF-based composite materials.
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ACS Applied Engineering Materials
·
2026
·
IF 3.5
Ying Zhou,Lingjun Zeng,Lan Xie,Bai Xue,Qiang Zheng
Asymmetric structural design and reduction of secondary contamination have been at the forefront of the development of electromagnetic shielding composites. Herein, the melamine foam@ferric oxide/cellulose nanofibers@carbon nanotube/polydimethylsiloxane/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (MF@Fe3O4/CNF@CNT/PDMS/PEDOT:PSS) (MC2PP) composites with an asymmetric three-dimensional porous-planar integrated structure are prepared by a solvothermal reaction, infiltration, and coating. A PDMS-encapsulated MF@Fe3O4/CNF@CNT porous composite is designed as an absorbing layer for absorbing electromagnetic waves (EMWs). The conductive polymer PEDOT:PSS, coated on the upper surface of the MF@Fe3O4/CNF@CNT/PDMS composite, is designed as a reflective layer. The MC2PP-2.4 composite obtains an average SET of 38.81 dB and an absorption coefficient (A) value of 0.654 at the X-band when the EMWs are incident from the MF@Fe3O4/CNF@CNT/PDMS side (M-side, porous absorber layer). When the EMWs are incident from the PEDOT:PSS side (P-side, planar reflecting layer), the MC2PP composite obtains an average SET of 39.00 dB and a reflection coefficient (R) of 0.964. The asymmetric structural design, along with conductive losses, magnetic losses, and interface polarization, contributes to the electromagnetic shielding performance that can be absorbed on one side and reflected on the other. More importantly, the elastic melamine foam composites are simple to prepare, reliable in process, stable in performance, and a unique scalable composite material, which have a broad application prospect in the field of electromagnetic interference shielding.
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