Journal of Energy Storage
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2025
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IF 9.8
Tiandong Zhang,Haixin Ma,Tianyuan Yin,Zining Pu,Xue Zhang,Lin Li,Chao Yin,Changhai Zhang,Qingguo Chi
Biaxially oriented polypropylene (BOPP) are the most popular dielectric materials that used in the film capacitors products, however, the maximum operating temperature of BOPP films is only 105 °C, which limits its application in the extreme high-temperature and high-field conditions. Thus, it is urgent to develop the new-typed dielectric films with excellent energy storage performance at elevated temperature for meeting the requirements of new energy vehicles and high-voltage-direct transmission engineering. Recently, non-polar polyolefin poly (4-methyl-1-pentene) (PMP) dielectrics with superior high-temperature endurance and exhibit great potential to replace BOPP. In this work, PMP films have been successfully fabricated by melt casting technique and achieved mass-production. To further improve the high-temperature energy storage performance of PMP dielectric films, we propose a cooperative modulation of the multiscale structures including molecular chains and surfaces. In detail, UV-irradiation grafting of trifluoroethyl methacrylate (TFEMA) onto PMP molecular chains creates “bulk-traps” through polar group effects, which can effectively trap electric charges and reduce conduction loss at high-temperature. Meanwhile, the AlN/PZT heterostructured inorganic barrier layers are deposited onto the surfaces of TFEMA-grafted-PMP films via magnetron sputtering technique. The energy band structure differences between AlN/metal electrodes and AlN/PZT interfaces were utilized to construct interface barriers, thereby suppressing charge injection from metal electrodes and reducing high-temperature conduction losses. The results demonstrate that the high-temperature energy storage performances of the films have been significantly improved by optimizing UV irradiation duration and inorganic barrier layer thickness. At 150 °C, a discharged energy density of 4.23 J/cm 3 with η maintained above 91 % has been achieved, while the films exhibit excellent cycling stability of charge-discharge performances.
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高影响因子
FUEL
·
2025
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IF 7.5
Badusha Mohamad Ali,Hao Zhang,Lei Wang,Ziqi Yu,Chenbing He,Tangxin Zhang,Kaisen Jiang,Weiheng Liu,Jiayuan Wang,Lingyu Zhu,Jianli Wang
The production of biodiesel from renewable feedstocks through energy-efficient processes remains a pressing challenge. Pickering emulsions, stabilized by solid particles, have emerged as a promising approach to enhance biodiesel production. This study presents the synthesis of dumbbell-shaped Janus polymer nanoparticles (DS-JPNs) functionalized with organic amine bases, which serves as Pickering interfacial catalysts (PICs) for transesterification reaction. The anisotropic morphology and amphiphilic nature of DS-JPNs promote stable adsorption at the soybean oil-methanol interface, leading to reduced interfacial tension, smaller droplet formation, and the generation of thermodynamically stable emulsions. This microreactor system prominently enhances the interfacial area and mass transfer efficiency, thereby accelerating the transesterification efficiency. Consequently, the DS-JPN-TMA catalyst achieved a biodiesel yield of 85.4 % under static conditions, a 2.6-fold increase compared to the spherical PS-TMA counterpart (34.2 %). Among the examined Janus organic base catalysts, DS-JPN-TBD demonstrated the highest catalytic performance (TOF 12.51 h −1 ), attaining a biodiesel yield of 96.7 %, attributable to the strong basicity of its bicyclic guanidine moieties. Furthermore, DS-JPN-TBD retained 94.2 % of its catalytic activity after five reaction cycles, evidencing excellent reusability and durability. This study underscores DS-JPN-TBD as an innovative, energy-efficient, and sustainable solution for biodiesel production and proposes a scalable strategy for green energy applications.
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FUEL
·
2025
·
IF 7.5
Mengzhu Yu,Jingwen Chen,Zhicheng Zhu,Yaji Huang,Pu Yang,Hao Xu,Menghui Li,Lu Tang,Xihui Fan,Yifan Xu,Dongxu Cui
This study investigated the influence of various additives (CaO, Al 2 O 3 , SiO 2 , kaolin, and calcite) on the volatilization and immobilization of heavy metals during the coal combustion in a horizontal tube furnace (700–1100 ℃). Results showed that the Si/Al-based sorbents had less effect on the mineral changes of the combustion ash of coal than Ca-based sorbents which tend to react with the Si/Al components in coal ash to form Ca-containing aluminosilicates and affect the heavy metal retention. With the increase in combustion temperature, the volatilization of heavy metals gradually increased. At lower temperatures (700–900 ℃), Ca-based additives (CaO and calcite) enhanced Se and Pb retention due to the formation of Ca-Se/Pb compounds and competitive mineral incorporation. However, their efficacy diminished above 900 ℃ due to compound decomposition. The Si/Al-based additives (SiO 2 , Al 2 O 3 , and kaolin) exhibited superior immobilization of Zn, Cu, and Pb at elevated temperatures (1000–1100 ℃), attributed to the formation of aluminosilicates. In addition, when the combustion temperature increased, the toxicity of Se decreased more significantly than other elements as the proportion of acid extractable/exchangeable Se decreased. In contrast, the form distribution of Cr, Ni, and Mn are more influenced by Ca-based minerals. Specially, the proportion of Cr in acid extractable/exchangeable form almost doubled after the addition of CaO and calcite. This work was conducive to the subsequent control of heavy metal emissions in the coal burning process.
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Molecular Catalysis
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2025
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IF 4.9
Jianbing Wu,Ge Hua,Jihua Liu,Yifan Zhao,Hong Ma,Yongzhao Wang,Zhiwei Wu
Pt-based catalysts confined within silicalite-1 (S-1) zeolites offer promising selectivity for propane dehydrogenation (PDH), but their long-term stability remains limited due to metal sintering and coke deposition. In this study, a series of Pt@S-1 catalysts with systematically varied Ga contents were synthesized via ligand-assisted hydrothermal encapsulation of Pt and in situ Ga incorporation. Structural characterizations reveal that Ga is introduced as both framework (Ga F ) and extra-framework (Ga EF ) species. Under H 2 treatment, Ga EF partially transforms into either PtGa alloy nanoparticles and Ga δ+ species, leading to the formation of Pt-Ga δ+ -H ensembles within the zeolite channels. These Ga-related species were associated with improved Pt dispersion, suppressed sintering, and reduced coke formation. The optimized catalyst, 1Pt24Ga@S-1, exhibited the most favorable PDH performance, achieving an initial propane conversion of 38.2 % and a propylene selectivity of 94.8 %. Under H 2 co-feeding (C 3 H 8 :H 2 = 1:1), it achieved a propylene production rate of 7.97 mol C3H6 ·g Pt -1 ·h -1 . The deactivation constant decreased from 0.247 h -1 for the undoped catalyst to 0.086 h -1 with Ga incorporation, and further declined to 0.008 h -1 under H 2 , reflecting improved stability. These results suggest that Ga incorporation contributes to both structural and electronic modifications of confined Pt species, offering insights into the design of more stable and selective PDH catalysts.
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JOURNAL OF CONTAMINANT HYDROLOGY
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2025
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IF 4.4
Bowen Li,Bo Li,Qunpo Jia,Yanpeng Cai,Xiao Yuan,Zhifeng Yang
Antibiotics have garnered increasing global concern due to their frequent detection and persistence in the environment, which can lead to ecological risks, biological resistance, posing a potential threat to ecosystem and human health. This study investigated the occurrence of antibiotics in a typical tidal channel located in the lower reaches of the Dongjiang River during both wet and dry seasons. Additionally, high-frequency continuous dynamic monitoring was conducted over a full tidal cycle at a tidal-influenced section. The total concentrations of antibiotics ranged from 11.46 to 940.53 ng/L in the wet season and from 15.08 to 322.31 ng/L in the dry season. Fluoroquinolones, particularly ciprofloxacin, were the predominant antibiotics detected. Concentrations were significantly higher in the wet season compared to the dry season. Spatially, antibiotic levels exhibited a pattern with higher concentrations in the upstream and downstream regions and lower concentrations in the middle section. Furthermore, antibiotic concentrations showed a clear tidal influence, with the lowest levels observed during ebb tide and the highest during flood tide. Ecological risk assessment indicated that antibiotics posed higher ecotoxicological risks in the wet season than in the dry season, with fluoroquinolones representing the highest risk category. The potential for antimicrobial resistance was relatively high for ciprofloxacin, moderate for ofloxacin and norfloxacin, suggesting that these compounds should be prioritized in risk management strategies. In contrast, human health risks associated with antibiotic exposure were found to be negligible. These findings offer valuable insights into the behavior and management of antibiotic pollution in tidal rivers.
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PubMed
高影响因子
MINERALS ENGINEERING
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2025
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IF 5
Xuesong Jiang,Jifei Sun,Boyuan Ban,Ling Wang,Linhua Hu,Jian Chen
This study investigates the novel application of polyetheramine (PEA) as an eco-friendly collector for quartz-mica flotation separation under pH-neutral conditions, focusing on its flotation behavior, adsorption mechanisms, and separation efficacy compared to the conventional dodecylamine (DDA). The single mineral flotation demonstrated the superior selectivity of PEA, achieving an 87 % flotation recovery differential (93 % for quartz vs. 6 % for mica), significantly outperforming the 26 % differential of DDA. The mixed minerals (mass ratio: Quartz/Mica = 2/1) flotation shows that PEA can effectively separate the quartz and the mica. Composition analysis shows that the flotation product phase composition is consistent with the single mineral. The quartz content in the 2nd froth product reaches 95.88 % (78.86 % recovery). The mica content in the sink product reaches 71.19 % (91.09 % recovery). Adsorption test analysis indicates that PEA and DDA are mainly adsorbed on minerals by electrostatic adsorption through the ─NH 3 + group. DFT calculations show that the difference in PEA adsorption energy between the quartz and the mica surfaces is 1.52 eV (DDA is only 0.2 eV). Based on the above results we analyzed the adsorption and separation mechanisms. The findings establish PEA as a sustainable alternative to conventional pH-dependent collectors, eliminating acid/alkali consumption while maintaining high separation efficiency.
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Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Yihan Wang,Yihao Wang,Jianjun Cheng,Chun Chen,Fei Zhan,Lei Wang,Guoyong Song
Background Durable superhydrophobic coatings offer a pleasing visual experience and robust self-cleaning capabilities, providing reliable support for enhancing living quality and industrial safety. In the manufacturing of modern superhydrophobic coatings, especially those derived from natural and renewable biomass materials, abrasion resistance, practicality, and the application performance of various colors have become key considerations. Wood fiber, a natural, abundant and sustainable material, has great potentials in hydrophobic material application due to its low-cost, biodegradation, UV resistance properties. Methods In this study, a biomimetic bird's nest-shaped material with multicolored durable superhydrophobic functions achieved by modifying wood fiber with ZnO nanoparticles and fluorination was developed, which takes the form of powder, flexible film, and solid powder paint. Significant Findings Compared to traditional hydrophobic paints, it can be easily applied to various substrate surfaces with desired colors, including flexible tapes and paper, rigid glass and steel plates, providing a feasible solution for the low-cost, excellent durability, multi-functional, and high-value utilization of superhydrophobic materials.
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Wei Chen,Zhirui Zhu,Xingyang He,Ying Su,Chao Yang,Zihao Jin,Huahui Qi,Cong Tian,Zewen Wu,Shiyu Guan,Dakun Tang
Exploiting biomass polyurethane (PU) coatings derived from vegetable oil adhere to sustainable development strategy, however it faces challenge like inferior wet bonding performance and insufficient protective properties to concrete under harsh marine environment. In this work, inspired by the catecholic chemistry of mussels, the eco-friendly biomass PU was synthesized by hydroxylation and stepwise polymerization of epoxy soybean oil, and by utilizing the catechol-based chemical covalent crosslinking combined with incorporation of polydopamine (PDA) surface modified MXene to composite modify the biomass PU, aiming at enhancing the interfacial bonding performance on moist concrete and its protective properties simultaneously. The Biomass PU composite coating's mechanical and thermal properties, crystallinity, UV aging resistance, water resistance and protective performance of concrete were systematically investigated, the interfacial bonding on wet substrates and protection mechanisms between the Biomass PU and cement-based materials were also revealed. The results demonstrated that DA covalent cross-linking and incorporating PDA@MXene nanosheets into the biomass PU composite significantly enhanced the wet bonding and protective performance to the cementitious substrate. The synergistic enhancement effects of cohesion strength of the biomass PU and favorable interfacial interaction promote the wet bonding strength. The strong covalent crosslink formed between PDA@MXene and the Biomass PU minimized interfacial defects and improved interfacial compatibility, while the well-dispersed PDA@MXene within the PU matrix created a labyrinth effect that extended the diffusion pathways of water and corrosive ion. This work provided a sustainable approach for constructing high-performance biomass PU coatings, offering an effective solution for the long-term corrosion protection of cementitious materials.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2025
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IF 4.7
Zhiping Wang,Rui Zhu,Jiejie Ling,Han Jiang,Lei Liu,Yan Gao,Hailang Liu,Le Xu
Zeolite Beta, discovered in 1967, features a unique three-dimensional (3D) 12-ring channel system and a highly tunable Si/Al ratio (SAR), granting exceptional stability and acidity crucial for catalysis. While conventional hydrothermal synthesis normally yields zeolite Beta with the SAR range of 10–30 using tetraethylammonium hydroxide (TEAOH) as the organic structure-directing agent (OSDA), the discovery of Al-rich natural mineral (Tschernichite) with the ∗BEA topology (SAR∼3.3) spurred efforts to synthesize low-SAR Beta zeolite for enhanced acid site density, hydrophilicity and ion-exchange capacity, enabling applications like dehydration, separation and shape-selective catalysis. However, achieving low SARs for the hydrothermal crystallization of zeolite Beta is still challenging, requiring excess Na + which promotes impurity phases (e.g., GIS , ANA , MOR ), prolongs crystallization period and reduces yield. Inspired by our recent work on the kinetic-control synthesis of high-silica NaY zeolite using aluminophosphate as the aluminum carrier, this study presents an accelerated, impurity-free synthetic route to achieve Al-rich zeolite Beta. Using the pre-synthesized aluminophosphate (e.g., AlPO-5) as a partial Al source favors the formation of a silica-rich Beta zeolite nucleus, thus effectively suppresses impurities (eliminating GIS phase in Na + -containing system) and amorphous phase (in Na + -free system), ultimately accelerating crystallization process. Based on this synthetic control, this study successfully synthesized the phase-pure Beta zeolite at SAR of 7.55 (Na + -free) and 6.58 (Na + -containing), while this strategy was extended to the Beta zeolite synthesis with other aluminophosphate, including SSZ-51 ( SFO) and AlPO-18 ( AEI) .
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WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 237
·期 2
·57
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IF 3
Wen Xiaoqiang,Liu Yanfen,Zhang Zhifeng,Zhou Qiusheng,Li Zhongqi
This study aims to recover tungsten from tungsten containing smelting wastewater using D630 ion exchange resin. Batch experiments were conducted to investigate the effects of resin dosage, initial adsorption pH value, temperature, and time on tungsten adsorption. The results showed that the resin had an adsorption rate of over 99% for tungsten under the condition of resin dosage of 2.5 g/L, pH value of 1.0–5.0, temperature of 30℃ and adsorption time of 240 min. The adsorption process conforms to the Langmuir model and follows pseudo first order kinetics. XPS and SEM–EDS analysis also confirmed the high adsorption performance of D630 resin for tungsten in wastewater. In order to investigate the adsorption performance of resin on tungsten in actual tungsten containing smelting wastewater, a pilot scale column adsorption–desorption experiment was conducted using 500 L of D630 resin. A total of 456 m 3 of tungsten containing wastewater was treated, and the tungsten adsorption rate reached 98.0% after approximately 440 m 3 of wastewater flow. When the resin has not reached saturation adsorption, the tungsten content in the effluent is less than 1 ppm. The saturated adsorption resin was desorbed with 12% NaOH to obtain 218.55 g/L tungsten rich solution.
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高影响因子
FUEL
·
2025
·
IF 7.5
Zhiwei Chu,Wenzhe Zhang,Wenhan Zhao,Duo Xu,Zirui He,Kuihua Han,Yingjie Li
H 2 and solid carbon are available through the CH 4 decomposition with Fe-based catalysts. Red mud is a solid waste containing lots of Fe 2 O 3 . In this work, the CeO 2 -doped solid waste-based catalyst pellets were prepared by the extrusion-spheronization method using red mud and calcium carbide slag for catalytic decomposition of CH 4 . The mass ratio of red mud to calcium carbide slag was 1:3. Regeneration of catalyst pellets with carbon deposits was performed by sieving separation and steam gasification. The effects of CeO 2 , catalyst pellet diameter, fluidization velocity, ratio and type of pore forming agent (bagasse, corn cob, horsetail pine, and walnut), ratio of binder (polyvinylpyrrolidone (PVP)), and pellet calcination duration on CH 4 decomposition and regeneration of catalyst pellets were studied in a fluidized bed reactor. The electrochemical performance of the Na-ion battery using the partial solid carbon materials from CH 4 decomposition as the anode materials was evaluated. The heat and mass transfer performance of catalyst pellets in fluidized state is enhanced. The initial CH 4 conversion is 88% in the first catalysis/regeneration cycle at 850 °C with the catalyst pellet diameter of 250–425 µm, calcination duration of 60 min, corn cob addition of 3 wt%, PVP addition of 2 wt% and fluidization velocity of 0.07 m/s. The CO 2 capture by CaO in catalyst pellets during gasification boosts the residual carbon deposits removal. The reversible sodium storage capacity of the Na-ion battery using solid carbon as the carbon-based anode material is 392.0 mAh/g. The CeO 2 -doped solid waste-based catalyst pellets are beneficial to the H 2 production, high-value utilization of solid carbon, and CO 2 capture via CH 4 decomposition and regeneration process.
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 237
·期 1
·8
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IF 3
Li Xiaoya,Zheng Ru,Duan Guangyu,Cao Zhanfang,Han Kai,Zhong Hong,Ma Xin,Wang Shuai
A poly( N -vinylpyrrolidone)-graphene oxide (NVP-GO) composite with high adsorption capacity for methylene blue (MB) was synthesized and comprehensively characterized using SEM, XRD, FT-IR, TG, elemental analysis, nitrogen physical adsorption, and XPS. The adsorption of MB onto NVP-GO was examined in relation to several variables, including contact time, adsorption temperature, initial concentration of MB, and pH. Adsorption kinetics, isotherms, and thermodynamics were thoroughly investigated. The adsorption kinetics followed the pseudo-second-order model, and the Langmuir isotherm model indicated a monolayer adsorption pattern of MB onto NVP-GO, with the maximum adsorption capacities ranging from 116.6 to 161.3 mg·g −1 at temperatures between 25 and 45 °C. Thermodynamic assessments and activation energy calculations demonstrated that the adsorption process was spontaneous, endothermic, and controlled by chemical activation. XPS analysis highlighted the significance of electrostatic interactions, n–π interactions, π–π stacking, and hydrogen bonding in mediating the adsorption mechanisms between NVP-GO and MB. Notably, NVP-GO maintained stable adsorption efficiency over three consecutive adsorption–desorption cycles, highlighting its potential as a promising adsorbent for wastewater treatment. Graphical
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