ELECTROCHEMISTRY
·
2024
·Vol. 92
·期 4
·043015-043015
·
IF 2.7
Yuxiang ZHONG,Yuanjia MA,Yangzhou HE,Xiao YANG
The authors focus on the development of a molten salt processing technology for extracting white phosphorus (P4) from sewage sludge ash, which is recognized as a potential secondary P source due to its composition of various metal phosphates. This work offers insights into the interaction between solid AlPO4 and molten CaCl2. The results show that solid AlPO4 exhibits favorable solubility in molten CaCl2, although at a slower rate compared to solid Ca3(PO4)2 due to the presence of stable Al–O bonds. The study also demonstrates the feasibility of extracting high-purity P4 from the molten mixture through electrolysis. The purity of the obtained electrolyzed P4 from AlPO4 is comparable to the commercially available high-purity-grade product. These findings underscore the potential of sewage sludge ash containing AlPO4 as a viable source for extracting high-purity P4. This research contributes to the advancement of sustainable P utilization technologies from secondary sources.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Weizhao Hu,Tongmin Cai,Yanbei Hou,Nanbiao Ye,Lei Song,Yuan Hu
Fiber-reinforced polyamide exhibits exceptional mechanical properties and durability; however, its widespread application is impeded by potential fire hazards. In this study, a hybrid material consisting of black phosphorus (BP) and polyhedral oligomeric silsesquioxane (POSS) was synthesized, denoted as BP-CO-POSS. The fire safety of fiber-reinforced polyamide demonstrated significant enhancement upon the incorporation of aluminum diethyl phosphinate (Alpi) and BP-CO-POSS. This enhancement was evident in various aspects, including the suppression of heat release behaviors, reduction in the emission of toxic gases, and an increase in the UL-94 rating. Notably, with the additional inclusion of 0.5 wt% BP-CO-POSS, a substantial decrease in both heat release rate (31.15 %) and total heat release (37.59 %) was observed when compared to the application of Alpi and BP alone, thus affirming the existence of a synergistic effect. This observation was substantiated through a comprehensive analysis of results obtained from both gas and condensed phases. This study offers a practical methodology for the widespread utilization of phosphorus-rich advanced materials, thereby further enhancing the fire safety of fiber-reinforced polymers.
研究领域:
材料科学
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复合材料工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 32
·50804
·
IF 3.125
Hao Zhang,Liwei Yan,Yuan Wang,Shengtai Zhou,Mei Liang,Huawei Zou,Yang Chen
The ablative properties of epoxy modified silicone rubber composites filled with zinc borate (ZB) and aluminum hypophosphite (AHP) were studied. The decomposition of the added fillers and covering connection of residual on the substrate contribute to the improvement of heat insulation. The ablation test shows that the formation of a dense char layer with certain strength is key to improving the ablative properties. The optimal ablative performance is achieved when the concentration of ZB and AHP is 10 and 5 phr, respectively. Under such circumstances, the linear ablation rate is as low as 0.032 mm/s, which is about 61% lower than the pure silicone rubber. Furthermore, the structure and composition of the formed char layer were analyzed using X-ray diffraction analysis, scanning electron microscopy, and Fourier transform infrared spectroscopy.
研究领域:
材料科学
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热防护工程
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产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Xiao Wang,Qian Wu,Siyuan Li,Zheming Tong,Duo Wang,Houlong L. Zhuang,Xinyang Wang,Yingying Lu
Lithium cobalt oxide (LCO), a promising cathode with high compact density around 4.2 g cm −3 , delivers only half of its theoretical capacity (137 mAh g −1 ) due to its low operation voltage at 4.2 V (vs. Li/Li + ) under commercial conditions. To improve its practical capacity, higher cut-off voltages are often adopted, which result in severe structure destruction and cause side reactions with electrolyte. The safety concerns of oxygen release further restrict the application of LCO. Here, we achieve stable cycling of LCO at 4.6 V (vs. Li/Li + ) through a surface engineering strategy by using lithium-aluminum-phosphate composite coating materials . This strategy prevents direct contact between cathode and electrolyte, reducing the loss of active materials without hindering the lithium ion migration. After calcination , a doping layer (or solid solution) includes phosphorus and aluminum is formed, which helps maintain the surface structure and stabilize the oxygen atoms around particle surface and shows high ion mobility when operated at 4.6 V (vs. Li/Li + ). All these benefits synergistically contribute to the stable cycling of LCO at 4.6 V (vs. Li/Li + ) with high capacity retentions of 88.6% (30°C) and 78.6% (45°C), respectively, after 200 cycles.
研究领域:
材料科学
·
能源存储与转换
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 47
·45542
·
IF 1.86
Shicheng Yan,Yahong Xue,Yulin Yang,Xiaowen Qi,Laizhou Song,Yingbing Sun
In this study, a novel aluminum phosphate (AlPO 4 ) heat-resistant layer reinforced with aluminum silicate fiber (ASF) was successfully compounded on a poly(ether sulfone) (PES) matrix via the preparation process of high-temperature heat treatment and vacuum hot-pressing sintering technique. The influence of the ASF content on the morphology, thermal, mechanical, and dielectric properties of the as-fabricated aluminum silicate fiber reinforced aluminum phosphate–poly(ether sulfone) (ASF/AlPO 4 –PES) layered composite was investigated. The results reveal that the incorporation of aluminum silicate fiber/aluminum phosphate (ASF/AlPO 4 ) heat-resistant layer can significantly improve the thermal stability and mechanical performances of the PES matrix composites. Compared with the pristine PES, the ASF/AlPO 4 –PES layered composite containing 8.0 wt % ASF exhibited better high-temperature resistance properties (300 °C) and a lower thermal conductivity (0.16 W m −1 K −1 ). Furthermore, the dielectric constant and dielectric loss tangent of this PES matrix composite decreased to 2.16 and 0.007, respectively. Meanwhile, the frequency stability of the dielectric properties for the ASF/AlPO 4 –PES layered composites was remarkably enhanced with increasing ASF addition at frequencies ranging from 10 2 Hz to 5 MHz. This was attributed to the existence of microscopic pores within the ASF/AlPO 4 layer and the strong interfacial bonding between the ASF/AlPO 4 layer and the PES matrix. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45542.
研究领域:
材料科学
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复合材料
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Guoqin Leng,Shengzhi Duan,Xianjie Liu,Fankai Lin,Yifan Yang,Xin Min,Ruiyu Mi,Xiaowen Wu,Yangai Liu,Minghao Fang,Zhaohui Huang
Electric heating, as a kind of clean heating approach, has aroused worldwide interest due to its exceptional energy conservation, high efficiency, and random switching modulation. However, it is still a great challenge on the practical application of carbon-based electrothermal composites, since the degradation of material long-time operation performances caused by the agglomeration of carbon fillers and the aging of polymer substrates . Herein, we propose a novel porous carbon fiber foam connected by the inorganic compound aluminum phosphate (CKFC), based on the kapok fibers via a vacuum impregnation and carbonization process . The additive agent, including aluminum dihydrogen phosphate and iron(III) chloride hexahydrate, could help to maintain the hollow cylindrical structure , produce more micropores in the carbon fibers, and ensure the fibers are firmly bonded together. The hierarchical carbon fiber structure and strong interfacial interactions endow the CKFC composite with fast heating response speed, high balance temperature under low input voltages (below 36 V), uniform surface temperature distribution , and desirable service stability during the electric heating. Impressively, the further prepared CKFC/paraffin composite exhibits an ultrahigh heat storage efficiency (97.9 %), which could also quickly raise the temperature to 45 °C within safety voltage and delay the heat release. Therefore, we believe that the CKFC/paraffin composite with excellent electric heating and electric thermal storage performances could hold great promise for the practical application in electric indoor heating.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
Coatings
·
2025
·Vol. 16
·期 1
·
IF 2.8
Feng Ding,Jiahui Xu,Xiaoxin Wei,Jiangdong Cao,Hongyan Wu,Lang Bai,Yujie Ma,Dongqian Li,Yilin Wang,Jiahan You
In this study, we have developed a water-based aluminum phosphate (WAP) coating consisting of a base layer and a surface layer. Graphene oxide (GO) was used to modify the base layer. Three different GO concentrations—0.5, 0.75, and 1 wt.%—were employed to assess their impact on the corrosion resistance of the coating and to explore the underlying mechanisms. The corrosion resistance mechanism was also examined. In the coating, GO combined with phosphate to form large blocks that effectively blocked the pores, and the porosity decreased with the increase in GO content. This led to an improvement in the substrate protection efficiency by over 10%. Impedance spectroscopy revealed that the main mechanism behind the enhanced corrosion resistance was the shielding effect of GO, which created a “maze effect” that improved the coating’s protective properties. However, an excessive amount of GO reduced the corrosion resistance of the coating. Overall, the WAP coating modified with 0.75 wt.% GO exhibited the best corrosion resistance.
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Hui Ren,Shun-Zhi Zhou,Tian Yu,Meng Jin,Jia-Rong Chen,Bin Wu,Zhong-Xiang Tang,Ning Ma,Fang-Chang Tsai
Traditional flame-retardant methods for wood, which employ organic reagents and halogens, are detrimental to human health and the environment. Therefore, a PVA (Polyvinyl alcohol)-based coating (PX-AP) incorporating xanthan gum (XG), phytic acid (PA), and aluminum phosphate (AP) was developed to enhance flame retardancy, antibacterial performance, and thermal insulation of wood. XG improves viscosity, stabilizes AP suspension, facilitates carbon formation, and collaborates with AP to form a dense char layer. PX-AP achieves UL-94 V-0 rating with LOI > 60%; TGA results show residual carbon content increases by 102.8% compared to natural wood; cone calorimeter tests indicate Total heat release (THR) decreases by 36.9% and Peak heat release rate (pHRR) by 43.7%; and the maximum backside combustion temperature drops by 44.1% in thermal insulation tests. Bio-inorganic carbon armor enhances fire-resistance & structural integrity of wood for safer evacuation. It also exhibits strong adhesion, meeting diversified demands for wood applications.
研究领域:
材料科学
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高分子化学
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纳米复合材料
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防火工程
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绿色化学
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木材科学
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热防护
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生物基材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Shuo Tao,Renshun Xu,Xiaolei Li,Dawei Li,Huaijun Ma,Donge Wang,Yunpeng Xu,Zhijian Tian
Extra-large-pore aluminophosphate –CLO (i.e., DNL-1) nanocrystals were synthesized in a eutectic mixture composed of diethylamine hydrochloride (DEAC) and ethylene glycol (EG) with 1-methylimidazole (1-MIm) as an additional amine using both conventional and microwave heating . The effects of the synthesis parameters, such as the amount of 1-MIm and the P/Al ratio, on the formation of DNL-1 nanocrystals were studied. The products were characterized using a variety of techniques. XRD , DLS , SEM and TEM results indicate that the as-synthesized DNL-1 nanocrystals have good crystallinity and narrow particle size distributions , and their average particle size was controlled in the 100–220 nm range by simply adjusting the amount of 1-MIm. TG–DSC and N 2 adsorption analyses reveal that the as-synthesized DNL-1 nanocrystals exhibit good thermal stability and the calcined samples possess high BET surface areas and large pore volumes . In addition, the cooperative structure-directing effects of 1-MIm and the eutectic mixture cation (DEA + ) in the formation of DNL-1 nanocrystals were discussed.
研究领域:
无机化学
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材料科学
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纳米技术
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多孔材料
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晶体工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Zhongshan Wang,Xinning Li,Hongyu Zheng,Sihao Deng,Yuanyuan Hou,Yongling Wu,Mingming Liu
In the fields of engineering and materials science, enhancing the corrosion resistance of engineered metal materials is extremely important. Most common anti-corrosion coatings often lack the capacity to resist external damages, which can lead to a failure in the coating's physical shielding effect. In this study, we have developed an all-water-based, simple one-step spray method for preparing a modified phosphate-based organic-inorganic composite coating , designated as AP-S30@Al 2 O 3 @PTFE. The nanofillers of polytetrafluoroethylene (PTFE) and alumina (Al 2 O 3 ) were dispersed into inorganic binder aluminum phosphate (AP) modified by silica sol (S30). The effects of the incorporation of S30 and Al 2 O 3 as the second hard phase on their wettability , mechanical properties, microscopic morphology, abrasion resistance, and corrosion resistance of the composite coatings were investigated. The results showed that the AP-S30@Al 2 O 3 @PTFE coating significantly improved the corrosion resistance of the metal, with the open current density decreasing from 2.285×10 −5 to 1.653×10 −7 mA·cm −2 , and the open potential decreasing from −0.7533 to −0.2577 V. In addition, the composite coating provides a significant improvement in wear resistance. Thus, this cost-effective and eco-friendly method may offer significant contributions to the design and fabrication of strategic composite coatings, advancing their practical deployment in the protection of metal surfaces.
研究领域:
工程学
·
材料科学
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DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Xiaoqing Wang,Ye Li,Xiaomin Li,Yong Wang,Feifei Zhang,Shishuai Li,Libo Li,Jinping Li,Jiangfeng Yang
Developing ethane (C 2 H 6 )-selective adsorbents is crucial for energy-efficient separation and the direct production of high-purity ethylene (C 2 H 4 ). While pure-silica zeolites show promise, their limited selectivity necessitates the exploration of alternative materials. Herein, we present AlPO 4 -17, an electrically neutral aluminum phosphate (AlPO) zeolite and isostructural analog of pure-silica zeolites. Featuring ultra-microporous structures and low-polarity surfaces, AlPO 4 -17 exhibits denser and stronger C−H···O interactions with C 2 H 6 than with C 2 H 4 . This results in the highest experimentally confirmed C 2 H 6 /C 2 H 4 selectivity (2.27) and C 2 H 6 adsorption heat (36.05 kJ/mol) among all reported C 2 H 6 -selective zeolites. Breakthrough experiments validate its superior C 2 H 6 /C 2 H 4 separation performance. Vacuum pressure swing adsorption (PSA) experiments demonstrate its practical efficiency under real-world conditions, while PSA simulations highlight its potential for enhanced recovery. As the first AlPO zeolite developed for C 2 H 6 /C 2 H 4 separation, AlPO 4 -17 offers valuable insights into the design of advanced C 2 H 6 -selective adsorbents, paving the way for more efficient industrial C 2 H 4 purification processes.
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 44
·e53071
·
IF 3.057
Zihao Cheng,Wenzong Xu,Ding Ding,Chengwen Xu,Yunlong Xie,Mengxia Qiao
In this study, a nanofiller (M-DOPO-BN) was synthesized by surface modification of hexagonal boron nitride with vinyltrimethoxysilane (KH-171) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), and compounded with aluminum diethyl phosphinate (ADP) to study their effects on flame retardant, smoke suppression and thermal conductivity properties of styrene-butadiene rubber (SBR). The results showed that the composites with an ADP content of 20 parts per hundred of rubber (phr) have good flame retardant properties, but the total smoke production increased significantly. The flame retardant properties of SBR composites compounded with 3 phr M-DOPO-BN and 17 phr ADP were not only further improved, but also the peak carbon monoxide production rate (pCOP) and peak carbon dioxide production rate (pCO 2 P) were reduced by 37.0% and 67.5%, respectively, compared with pure samples, showing a good smoke inhibition effect. In addition, the thermal conductivity of the composites have also been improved to a certain extent. The variable temperature infrared and residual char analysis of SBR composites showed that the reasons for its flame retardancy and smoke suppression are that M-DOPO-BN can catalyze the formation of carbon, and the silica and boron nitride generated by decomposition during combustion can improve the density of residual char.
研究领域:
材料科学
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高分子科学
·
消防安全工程
·
化学工程
✓ 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）