JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Haofan Wang,Zhifei Wu,Xu Zhang,Li Liu,Deqing Liu,Jin Ran,Dawei Zhang
Conventional polymer anion exchange membranes (AEMs) suffer from the permeability-selectivity trade-off in diffusion dialysis (DD), limiting their efficiency in critical resource recovery scenarios (e.g., acid recycling and Li + extraction). To overcome this, this study incorporated polyaniline-modified MXene (PANI-Ti 3 C 2 T X ) nanosheets as transformative fillers into quaternized polyphenylene oxide (QPPO). The resulting PANI-Ti 3 C 2 T X -QPPO membranes enable dual-function DD for H + /metal cations and Li + /Mg 2+ separation. First, the as-prepared membranes exhibited enhanced microphase separation, yielding expanded hydrophilic domains (13.95–14.8 nm vs. 12.5 nm in pristine QPPO). Moreover, the 1.0 %-PANI-Ti 3 C 2 T X -QPPO membrane (with 1.0 wt% filler loading) achieved a peak ion exchange capacity of 1.75 mmol g −1 . For H + /metal cations separation: in HCl/FeCl 2 mixture, the H + dialysis coefficient ( U H ) reached 1.39–1.50 × 10 −2 m h −1 (2.7–2.9 times higher than the commercial TWDDA3S, 0.52 × 10 −2 m h −1 ); in HCl/AlCl 3 mixture, U H reached 1.50–1.53 × 10 −2 m h −1 , combined with exceptional selectivity ( S H/Al = 1568.4–1805.8), outperforming both TWDDA3S ( U H = 0.94 × 10 −2 m h −1 , S H/Al = 1423.8) and pristine QPPO ( U H = 1.27 × 10 −2 m h −1 , S H/Al = 1117). Finally, for Li + /Mg 2+ separation, the membranes delivered enhanced Li + flux with competitive S Li/Mg (11.4–12.4) against TWDDA3S (11.4) and QPPO (11.8). This study demonstrates that PANI-Ti 3 C 2 T X and QPPO synergistically overcome the permeability-selectivity trade-off in polymer membranes.
研究领域:
膜科学与技术
·
分离工程
·
材料化学
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资源回收
·
离子传输
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaohua Wang,Yanwei Li,Guang Sun,Jianliang Cao,Yan Wang
The pressing demand for environmental and health safeguarding has spurred intense enthusiasm among researchers to delve into metal oxide semiconductors (MOSs) based gas sensors. Particularly, the accurate detection of trace hydrogen sulfide (H₂S), which has drawn growing attention, has become a focal point. Herein, a molybdenum (Mo) doping strategy was presented to enhance the H₂S-sensitive properties of In₂O₃ nanomaterials to detect the presence of 1 ppm H₂S at comparatively lower temperatures. The Mo-doped In₂O₃ cubic nanoparticles (Mo-In₂O₃ CNPs) were synthesized through a hydrothermal route using In(OH) 3 as a precursor. When used as a sensitive material for the detection of H₂S, the Mo–In₂O₃ CNPs have shown some impressive improvements compared to pure In₂O₃ counterparts, including a reduction in working temperature (240 °C vs 300 °C), an increase in sensitivity (18.46 vs 11.34 for 20 ppm H₂S), a better selectivity (6.2 vs 2.84 times to ethanol), and a lower limit of detection (0.79 vs 0.47 ppm). Even to 1 ppm H₂S, the Mo-In₂O₃ sensor can give a response of 2.18, signifying its application feasibility in detecting trace amounts of H₂S. The multiple sensitization effects and their potential mechanism of Mo-In₂O₃ CNPs were discussed in detail.
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JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xiangwei Ren,Yue Zhang,Shuzhen Lyu,Li Wang,Ruichen Liu,Guozhu Liu,Rongrong Zhang
Oxidation of methylene compounds remains a critical challenge due to the difficult activation of C–H bond. Herein, Ce–Al composite oxide was prepared and employed for oxidation of 2-alkyl-anthrone and anthracene to corresponding anthraquinone (AQ) which is used widely in the H 2 O 2 production by the anthraquinone process and fine chemical industries, with air at mild conditions. Characterization results show that incorporation of Ce, existing partially in CeAlO 3 phase, results in the generation of oxygen vacancies and enhancement of reducibility. The optimal Ce–Al composite oxide (10%CeAl) exhibits superior performance in oxidation of 2-alkyl-anthrone and anthracene to AQ. The conversion of 100% could be achieved for 2-alkyl-anthrone to AQ at reaction time of 8 h and for 2-alkyl-anthracene to AQ at 15 h over 10%CeAl, with 100% selectivity. In-situ electron paramagnetic resonance measurements and DFT calculations reveal that the Ce–O–Al structure in CeAlO 3 phase promotes the formation of carbon-centered radical R • through altering the C–H cleavage mechanism from hydrogen atom transfer to proton-coupled electron transfer (PCET), and superoxide anion radicals (O 2 •− ) formed on oxygen vacancies promote oxidation of R • .
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2026
·
IF 9.2
Jia Yuan,Chunyu Wang,Xinrui Yuan,Xin Wang,Xu Gao,Yuxuan He
Due to the excessive chemical-energy consumption, conventional treatments ( e.g. Fenton or catalytic ozonation) have faced great challenges when treating chemical wastewater containing tetrabromobisphenol S (TBBPS), a prevalent brominated flame retardant. This study proposes an electrocatalytic active atomic hydrogen (H*)-mediated electroreduction strategy, enabling enhanced degradation of TBBPS into intermediates with lower toxicity and higher biodegradability. A palladium-modified electrocatalytic microfiltration membrane (EMM) was developed to efficiently generate H*, which played a dominant role in the reductive debromination of TBBPS. By conducting quenching experiments, it was found that free H* and adsorbed H* co-dominate the TBBPS removal process. Under optimized conditions, the EMM achieved nearly complete removal (∼100%) of TBBPS (100 mg L −1 ) within 60 min, with a low energy consumption of 9.53 kWh/m 3 . The degradation pathway of TBBPS was proposed on the results of calculations and LC-MS analysis, and the evidence demonstrated the lower toxicity of the degradation intermediates. These findings emphasize the prospects of H*-mediated electroreduction strategy as a green and environmentally friendly treatment for industrial wastewater treatment.
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PubMed
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2018
·Vol. 18
·期 5
·3291-3298
·
IF 1.354
Yang Xi,Yu Xiaoyan,Naito Kimiyoshi,Ding Huili,Qu Xiongwei,Zhang Qingxin
A new thermally conductive and electrically insulative polyimide were prepared by filling different amounts of hexagonal boron nitride (h-BN) particles, and the thermal conductivity of Polyimide (PI) composites were improved with the increasing h-BN content. Based on this,
two methods were applied to improve thermal conductivity furtherly at limited filler loading in this paper. One is modifying the h-BN to improve interface interaction, another is fabricating a nano-micro hybrid filler with 2-D h-BN and 0-D nano-scale nanodiamond (ND) to build
more effective conductive network. Both surface modification and hybrid system have a positive effect on thermal conductivity. The composites introducing 40 wt% hybrid filler (the weight ratio of ND/modified BN was 1/10) showed the highest thermal conductivity, being up to 0.98 W/(m K) (5.2
times that of PI). In addition, the composites exhibits excellent electrical insulation, thermal stability properties etc.
研究领域:
材料科学
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聚合物复合材料
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热管理材料
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JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2021
·
IF 2.369
Ke Cao,Ji Wu,Cai-Yan Zhang,Li-Fang Ding,Junxiao Yang
A palladium catalyzed intramolecular amination of B(7)-H for synthesis of o -carborane fused isoquinolinones has been developed. Kinds of o -carborane fused isoquinolinones decorated with active groups have been synthesized with good to excellent yields. A plausible mechanism involving palladium catalyzed electrophilic B-H activation/amination was proposed.
研究领域:
有机化学
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催化化学
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硼化学
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药物化学
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COMPOSITES COMMUNICATIONS
·
2026
·
IF 7.7
Yujie Yang,Huixing Lin,Jiaqi Li,Yang Gao,Xiaogang Yao,Haiyi Peng
Efficient thermal management is a critical challenge for next-generation electronics, where conventional polymer-based materials suffer from inherently low thermal conductivity. Inspired by natural honeycomb structures, we developed a freeze-casting strategy to fabricate high-performance hexagonal boron nitride (h-BN)/polysilylaryl-enyne (PSAE) composites exhibiting enhanced thermal conductivity. By leveraging the unidirectional crystallization of tert-butyl alcohol (TBA), a highly ordered h-BN honeycomb scaffold was constructed, facilitating the formation of efficient phonon conduction pathways. The composites, with a low h-BN (10 μm) ratio of 23 vol%, exhibit an outstanding omni-directional thermal conductivity of 4.71 W/(m·K) along the z-axis and 3.44 W/(m·K) along the x-axis, significantly outperforming conventional polymer composites. Moreover, dielectric characterization confirms that the honeycomb structure enhances anisotropic dielectric behavior ( ε rz = 3.68, ε rx = 3.32, for h-BN (10 μm) at 23 vol%). The proposed bioinspired approach presents a scalable and effective route for developing lightweight, thermally conductive composites for advanced electronic applications.
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TURKISH JOURNAL OF CHEMISTRY
·
2026
·Vol. 50
·期 3
·285-299
·
IF 2
LI JUANHONG,WANG SUQIN,LIU XIN,LIU FENG
A [H]-accelerated catalytic Fenton system was developed using Pd/UiO-66(Zr)-F4 as the catalyst. This system enabled the regeneration of Fe²⁺ and facilitated the continuous generation of both ·OH and 1O2 through [H]-mediated electron transfer at ambient temperature and pressure. Under the conditions of 0.2 g L−1 catalyst (Pd loading 0.516 wt%), 25 μM Fe2+, 60 mL min−1 H2 flow (as the [H] source), 20 mM H2O2, and pH 3, approximately 89% of carbamazepine (initial concentration 20 mg L−1) was degraded within 3 h using trace iron. However, the catalytic activity of Pd/UiO-66(Zr)-F4 gradually declined from 89% to 53% over six reaction cycles. This decrease was likely due to loss of specific surface area caused by microstructural degradation associated with hydrogen spillover effects.
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Marine Drugs
·
2015
·Vol. 13
·期 6
·3360-3367
·
IF 2.853
Ying Fu,Ping Wu,Jinghua Xue,Hanxiang Li,Xiaoyi Wei
Two new quinone sesquiterpenes named myrothecols G and H (1and2), a pair of C-1′ diastereomers of 13-hydroxyl penicilliumin A, were isolated from the mycelia solid cultures ofMyrotheciumsp. SC0265. Their structures, including the absolute configurations, were established on the basis of the spectroscopic data combining with the theoretical conformational analysis. The cytotoxic activities of1and2were tested against a panel of human tumor cell lines.
研究领域:
天然产物化学
·
药物化学
·
肿瘤药理学
·
结构生物学
·
微生物学
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MATERIALS CHEMISTRY AND PHYSICS
·
2022
·
IF 4.778
Yuhong Nong,Licai Fu,Jiajun Zhu,Wulin Yang,Deyi Li,Lingping Zhou
To meet the criteria of high specific power thermal battery development, all-lithium molten salt electrolytes (LiF–LiCl–LiBr) are often employed in thermal batteries. In this work, a hexagonal boron nitride binding molten salt electrolyte (h-BN-E) was synthesized using a straightforward liquid nitrogen mixing process and high temperature calcination , which using h-BN as a binder in electrolyte. The h-BN-E has a low internal resistance (0.21 Ω) and a high discharge voltage (2.5 V), which is close to the theoretical discharge voltage (2.64 V). The h-BN-E with high specific capacity (329 mAhg −1 ) and specific energy (700 W h kg −1 ) at the same time. It can be demonstrated that h-BN has the capacity to more effectively immobilize the electrolytes at high temperature discharge when combined with the discharge overflow diagram. The investigation of h-BN as a binder for thermal batteries with low internal resistance can be started with the help of this work.
研究领域:
储能技术
·
材料科学
·
电化学
·
热电池
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Jia Wang,Zeru Wang,Chuanyao Dong,Kan Zhang
Titanium alloys are widely used in lightweight mechanical components, but their limited mechanical and tribological properties often lead to failure under service conditions. In this study, a titanium-based micro-arc oxidation (Ti-MAO) composite coating was developed by incorporating hexagonal boron nitride (h-BN) while optimizing electrolyte composition and process parameters. Proper control of h-BN content effectively improved the high-temperature oxidation resistance and tribological properties of the Ti-MAO coating. The research results showed that h-BN could regulate the energy distribution during MAO discharge, promote coating densification, and reduce structural defects. At a concentration of 4 g/L, h-BN maintained good dispersibility. Compared with an additive-free Ti-MAO coating, the h-BN/Ti-MAO composite coating showed an 86% reduction in the oxidation rate constant at 600 °C. Due to the stable layered structure of h-BN over a wide temperature range, the composite coating maintained a friction coefficient (COF) below 0.31 from room temperature (RT) to 500 °C, reduced to below 0.21 within 300 °C. However, excessive h-BN led to particle aggregation and a decline in overall coating performance. In summary, this approach enhances the durability of titanium alloy components through improved oxidation resistance and tribological properties.
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JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Binbin Zhang,Huizhong Zhao,Yajie Gao,Qingge Wang,Zhihao Xi,Kui Wang
On the basis of the method used by Reinsch and Solovyeva, the aluminum based MOF material CAU-10-H (CAU stand for Christian-Albrechts-University) was synthesized by multiplying the amount of aluminum sulfate octahydrate and isophthalic acid by 10 times. CAU-10-H (b) is obtained after washing. In order to improve the water vapor adsorption performance of pure CAU-10-H (b), lithium chloride (LiCl) solution was compounded with CAU-10-H (b) by impregnation method to obtain a composite adsorbent CAU-10-H (L) and its adsorption characteristics were studied. The results showed that the composite adsorbent showed good adsorption and desorption performance under test conditions. Among them, the equilibrium adsorption capacity of the composite adsorbent with 33.1% LiCl content is 0.5007 g/g after 30 cycles, which is about 1.675 times of the adsorption capacity of pure CAU-10-H (b) under the same conditions. This shows the potential of the composite adsorbent to be used in the air-water extraction system.
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