APPLIED CATALYSIS A-GENERAL
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2026
·
IF 4.8
Linlin Wang,Bingjie Liu,Meng Liu,Jikun Li,Jinglei De,Yangchuan Ke
A BiOCl/ZIS heterojunction was constructed by ultrasound-assisted assembly. • Interfacial coupling induced directional redistribution of photocarriers. • 3-BZ efficiently degraded concentrated RhB, CR, and TC under visible light. • 3-BZ achieved efficient photocatalytic H₂O₂ production under visible light. • In situ XPS and DFT supported type-II electron transfer from ZIS to BiOCl. An ultrasound-assisted assembly route was used to construct a BiOCl/Zn₃In₂S₆ (ZIS) heterojunction for visible-light-driven pollutant degradation and H₂O₂ production. After 120 min of irradiation, the optimized composite degraded 99.59% of Rhodamine B (RhB, 600 mg/L), 99.82% of Congo red (CR, 200 mg/L), and 83.50% of Tetracycline (TC, 80 mg/L). In a separate O₂-saturated medium containing 10 vol% isopropanol, the H₂O₂ yield reached 5644 μmol g⁻¹ over the same period. In situ irradiated X-ray photoelectron spectroscopy showed that Bi 4 f, Cl 2p, and O 1 s shifted toward lower binding energies, whereas the ZIS-associated core levels shifted toward higher binding energies. These opposite changes indicate photoelectron enrichment in BiOCl and electron depletion in ZIS. Density functional theory calculations revealed a larger work function for BiOCl (6.72 eV) than for ZIS (5.33 eV), while the differential charge density confirmed interfacial electron redistribution. Together with the density-of-states and experimental band-edge results, these findings support a type-II pathway in which electrons migrate from the ZIS conduction band (CB) to the BiOCl CB, while holes transfer from the BiOCl valence band (VB) to the ZIS VB. The resulting carrier separation favors O₂ reduction toward H₂O₂ formation and promotes oxidative pollutant degradation. Download: Download high-res image (225KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Kangjia Song,Jie Liu,Feifei Zhang,Chenduo Zhang
A high bio-based content (86.3 wt%) waterborne polyurethane was designed using renewable PLA, HCO, and PDI. • Oxime groups and UPy quadruple hydrogen bonds synergistically enhance mechanical properties and self-healing capability. • h-BN doping increases thermal conductivity by 112% and enables photothermal healing. To address the inherent conflict between the environmental sustainability and material durability of bio-based waterborne polyurethane (BWPU), this research proposes a synergistic strategy that integrates bio-based materials, functional nanofillers, and dual dynamic bonding networks. These networks consist of quadruple hydrogen-bonding arrays from 2-amino-6-methylpyrimidin-4(3H)-one (UPy) units and dynamic covalent oxime bonds. Firstly, a series of oxime-containing BWPUs was synthesized from bio-based polylactic acid polyol (PLA), hydrogenated castor oil (HCO), and 1,5-pentamethylene diisocyanate (PDI), with dimethylglyoxime (DMG) or 1,4-benzoquinone dioxime (BQDO) as chain extenders instead of conventional small-molecule diols, i.e., 1,4-Butanediol (BDO). Subsequently, a dual dynamic crosslinked network was established via end-capping modification with UPy. Finally, the hexagonal boron nitride (h-BN) was incorporated to enhance thermal conductivity of composite material. The experimental results showed that, compared with the single oxime-based system, the dual dynamic network constructed based on the oxime-urethane and UPy quadruple hydrogen bonds (BWPU-Q-U10) significantly enhances the comprehensive mechanical properties. The toughness of the BWPU-Q-U10 film increases from 1660.3 MJ/m 3 to 2907.4 MJ/m 3 . Furthermore, this material achieves a self-healing efficiency of 97.2% within 24 h at room temperature (25 °C), demonstrating an optimal synergy between mechanical properties and self-healing efficiency. On this basis, the introduction of 10 wt% h-BN, identified as the optimal loading, increases the thermal conductivity of the composite by 112%. Meanwhile, leveraging the photothermal effect of BQDO, this composite achieves a healing efficiency of 86.3% within 5 min under 365 nm UV irradiation. This research presents a durable, bio-based waterborne polyurethane for smart coatings that achieves rapid self-healing while maintaining environmental sustainability. Download: Download high-res image (168KB) Download: Download full-size image
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MACROMOLECULAR BIOSCIENCE
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2015
·Vol. 15
·期 10
·1411-1422
·
IF 3.851
Yan-Ling Luo,Mei Han,Feng Xu,Ya-Shao Chen,Yong-Qin Zhang
pH-Responsive H-type poly(methylacrylic acid- block -four hydroxyl terminated poly(butadiene-acrylobitrile)- block -poly(methylacrylic acid (PMAA 2 - b -HTPBN- b -PMAA 2 ) block copolymers were synthesized via atom transfer radical polymerization and the follow-up hydrolysis, and characterized by 1 H NMR, FT-IR and SEC . The block copolymers could self-assemble into nanoscale spherical core-shell micelle aggregates in aqueous solution, and the physicochemical properties depended on the system composition and pH media, with pH phase transition at 5.7–6.1. The copolymer micelle aggregates exhibited pH-triggered drug release and cytotoxicity, and could potentially be used as drug targeting release carriers.
研究领域:
材料科学
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药学
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生物医学工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shiqiang Xu,Ziyu Song,Haotian Zhang,Zepeng Hou,Xian Zhou,Yingjie Yang,Xiaofeng Gao,Lili Lin,Siyu Yao
Subsurface metal promoted boron-based catalysts (M@BO x ) have demonstrated excellent activity and olefin selectivity in the oxidative dehydrogenation of propane (ODHP) through the efficient regulation of the special radical pathways. In this study, we discovered convincing subsurface metal dependent kinetic behaviors of the M@BO x catalysts which serve as powerful evidence to interpret the function of subsurface metal promoters in the ODHP reaction. The dependence of reaction rate with the partial pressure of propane and oxygen was determined and significant change of kinetic behaviors was resolved with the change of metal promoters, including the propane reaction order ranging from 1.93 to 2.44 and the turning O 2 pressure in the rate- P O2 profiles. Based on the kinetic equations derived from the reaction mechanism and the steady-state approximation, subsurface metal promoters modulate the contributions of surface and gas-phase reactions by influencing the initiation of reactive radicals both on the surface and in the gas phase. The reaction order of propane is positively correlated with the ratio of BO-H dissociation/regeneration rates ( k 1 / k 2 ), but high catalytic ODHP performance can only be realized at an appropriate k 1 / k 2 ratio. Similar trend is also observed regarding the partial pressure of oxygen. Therefore, the kinetic studies experimentally demonstrate the strong ability of subsurface metal in changing the radical initiation behaviors of supported boron oxide active species, pointing out that balancing the O-H bond dissociation and regeneration rates are highly important to achieve high performance in ODHP reaction.
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2026
·
IF 3.1
Zhang Jun,Liu Boyu,Luo Laizheng,Liang Pingjuan,Li Jinzhi,Jiang Lingying,Chen Xingyi,Tang Huan,Chen Longxiang,Jin Meng,Wu Weimin,Lu Shi-Yu
The development of cost-effective, highly active and durable Pt-based electrocatalysts for oxygen reduction reaction (ORR) remains a major challenge to advancing proton exchange membrane fuel cells (PEMFCs). Hollow nanoarchitecture loaded with metal alloys has been widely used as a nanoreactor to regulate electronic structure of active sites and enhance reactant enrichment. In this study, PtCo alloy nanoparticles are uniformly dispersed on both outer and inner surfaces of hollow TiN spheres and carbon composite support (Pt 3 Co/H-TiN-C). The optimized Pt 3 Co/H-TiN-C nanoreactor delivers a mass activity of 64 mA mg Pt −1 and a specific activity of 0.122 mA cm Pt −2 at 0.90 V vs. RHE in 0.1 M HClO 4 solution. Furthermore, the Pt 3 Co/H-TiN-C nanoreactor enables an effective four-electron transfer pathway with high selectivity and low H 2 O 2 yield (less than 3%) toward ORR process. After accelerated durability tests, the half-wave potential of Pt 3 Co/H-TiN-C shows a decay of only 24 mV after 10,000 cycles, markedly smaller than Pt/C catalyst (74 mV). The enhanced durability and ORR kinetics of Pt 3 Co/H-TiN-C are attributed to the synergistic effect of strain effect in PtCo alloy, strong interactions between PtCo and H-TiN-C, and nanoreactor architecture. These features not only regulate the Pt electronic structure, increasing the Pt 0 content, but also expose more accessible active sites on the outer/inner surfaces to accelerate charge/mass transport. Moreover, alloyed Co atom suppress the dissolution of Pt, endowing an improved durability. This work provides a new strategy for designing efficient and durable Pt-based ORR catalysts for PEMFCs.
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2026
·
IF 7.3
Ning Zhang,Zhuo Zhang,Xiping Song,Jing Zhang,Haijun Su
To address the poor mechanical properties of hexagonal boron nitride (h-BN) ceramics while maintaining their high directional thermal conduction performance, this study proposes a laminated structure design using h-BN as the soft, thermally anisotropic matrix layer and ZrB 2 -SiC as the hard reinforcing layer. h-BN/ZrB 2 -SiC laminated composite ceramics with different layer thickness ratios were fabricated via tape casting and hot-pressing. The h-BN grains maintain strong preferred orientation with their c-axes aligned parallel to the sintering pressure, even after introducing ZrB 2 -SiC layers. At an optimal layer thickness ratio of 1:1, the laminated ceramic achieves the best mechanical performance, with a flexural strength of 169.09 ± 18.67 MPa and a fracture toughness of 8.32 ± 0.97 MPa·m 1/2 , representing increases of 74% and 169%, respectively, compared with tape casted monolithic h-BN ceramics. These enhancements arise from synergistic toughening mechanisms including crack deflection, branching and delamination. Moreover, the laminated structure preserves strong anisotropic thermal conduction. At a layer thickness ratio of 2:1, the composite exhibits the highest thermal conduction anisotropy, with a temperature difference of ∼5 °C between in-plane and through-plane directions at 150 °C. These results demonstrate that the h-BN/ZrB 2 -SiC laminated architecture effectively combines high directional heat transfer with significantly improved mechanical properties, offering a promising solution for advanced thermal management in microelectronics and high-power devices.
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高影响因子
Nanoscale
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2026
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IF 5.2
Ziye Feng,Zijie Peng,Yang Xu,Ming Zhang,Junfang Cheng
The oxygen evolution reaction (OER) is central to water electrolysis for green hydrogen production, where the development of efficient, stable, and cost-effective catalysts remains a key challenge. Ruthenium (Ru)-based catalysts are highly promising for OER, yet their practical deployment is limited by poor stability and low atomic utilization. Here, we report a fluorination-assisted loading strategy to fabricate an amorphous@crystalline composite catalyst, in which amorphous RuOx active species are anchored onto a fluorine-modified Ruddlesden–Popper (R-P) perovskite support (La1.2Sr0.8Ni0.6Fe0.4O4+δFy) to form the catalyst denoted as RuOx@LSNF-F. Fluorination induces robust metal–support interactions via electronegativity differences, stabilizing Ru4+ to balance the activity and stability while constructing an ordered hydrogen-bond network and optimizing the surface wettability. Electrochemical tests in 1.0 M KOH confirm the exceptional OER performance of RuOx@LSNF-F, which achieves an overpotential of 287 mV at 10 mA cm−2, a Tafel slope of 75 mV dec−1, and a double-layer capacitance of 3.7 mF cm−2 while maintaining stable operation for over 100 h, outperforming its non-fluorinated counterpart, the pristine support, and other benchmark Ru-based catalysts. Mechanistic studies reveal that the exceptional performance arises from the synergistic coupling of the adsorbate evolution mechanism (AEM) and lattice oxygen mechanism (LOM), enabled by the fluorination-engineered interface, while a hydrogen bond network is enhanced on the amorphous RuOx layer to accelerate deprotonation and improve the surface wettability. This work presents a strategy for designing high-performance perovskite-based OER catalysts and advances the understanding of their structure–activity relationships.
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PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 25
·8020-8028
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IF 7.393
Minghao Yi,Xunjun Chen,Peter S. Shuttleworth,Lewen Tan,Yunqing Ruan,Yixin Xu,Jiefeng Zheng,Shufang Wu,Sen Hu,Simin Xie,Zhixing Guan,Guoqiang Yin,Yingde Cui
Transparent and easily fabricated films were obtained through the coupling of eugenol, a bio-sourced feedstock, and poly(methylhydrosiloxane), via the Piers–Rubinsztajn reaction and Pt-catalysed hydrosilylation. The precursor reagents are readily available and economical, and the reaction process used was mild and easily undertaken. Additionally, poly(methylhydrosiloxane), having an abundant source of pendant Si–H groups, can be cross-linked with eugenol at multiple juncture points, and thus the eugenol content in these films ranges from 13.12 to 45.42 wt%. It was found that as the eugenol content increased, the thermal stability of the films also improved, with T10% and Rw at 700 °C ranging from 350.1 to 584.3 °C and 46.41 to 86.63%, respectively, which is higher than other analogous biomass-derived polysiloxanes. Crucially, the prepared films also exhibited suitable optical properties, with a >90% transmittance within the 430–1100 nm region and near 100% absorbance in the UV region (<350 nm), verifying their potential applications as optical encapsulants. Aside from good light transmittance, the refractive index of the films increased from 1.44 to 1.52 (at 450 nm) with higher ratios of eugenol. This demonstrates their suitability for use as high-refractive index (>1.5) LED encapsulants and also in stacked multi-layer reflectors. In addition, to protect the encapsulated chips from moisture erosion, these films exhibit good water vapour barrier properties and water repellence.
研究领域:
材料科学
·
化学工程
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
·
IF 3.764
Jianchuan Liu,Yunbo Zhang,Yao Miao,Ying Yang,Ping Li
The mechanism of lithium ion-sieve adsorbing Li+ ions from brines is based on the Li+/H+ ion exchange, where Li+ ions in brines are adsorbed on ion-sieves to displace H+ ions, and the displaced H+ ions are released in brines in turn. If the released H+ ions are accumulated in brines, then brines become acidic, not conducive to Li+ ions adsorption on ion-sieves. Therefore, it is important to regulate the pH value in brines to be more than 7 during the lithium recovery from brines using ion-sieves. Instead of the addition of the traditional ammonia buffer solution, the alkaline anion exchange resins are used to regulate the pH value of brines in this work since the addition of ammonia buffer solution in brines would cause the secondary pollution in Salt Lake with a high ammonia nitrogen emission value. The alkaline anion exchange resins contain the amine functional groups to neutralize the released H + ions in brines that enhance the adsorption performance of lithium ion-sieves. Like ammonia buffer, the amine functional groups of alkaline resins without more free OH– ions in brine will avoid the precipitation of high content of magnesium in brines. Here, seven kinds of alkaline anion exchange resins are used to neutralize the released H+ ions during lithium recovery from brines using homemade granular titanium-type lithium ion-sieves (PVB-HTO ion-sieves). The process intensification for lithium recovery from brine by lithium ion-sieves with the addition of alkaline anion exchange resins is evaluated based on experimental results, and a green lithium recovery technology from brine with a high Mg/Li ratio will be developed.
研究领域:
化学工程
·
环境科学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Qiuxia Zou,Hongshen He,Jie Xie,Shibo Han,Weijie Lin,Ajoy Kanti Mondal,Fang Huang
In this study, Sn modified molecular sieves with Lewis (L) acid center and Al modified molecular sieves with Brönsted (B) acid center were prepared by post-synthesis method. They were applied to the catalytic pyrolysis of Kraft lignin for the preparation of bio-oil. The acid properties of acid modified zeolites were systematically investigated by XRD, SEM, EDS and Py-FT-IR, and the bio-oil is analyzed by heteronuclear single quantum coherent nuclear magnetic resonance (HSQC-NMR). By separating L acid and B acid from zeolite molecular sieves, the conformational relationships between these two acids on the oxygen-containing functional groups in Kraft lignin bio-oil are investigated separately. The results show that acid modified molecular sieves’ L acid and B acid can effectively improve the cleavage of aromatic C-O bonds including methoxy and ether bonds. The L acid of Sn modified molecular sieve tends to break the O-C 4 bond and the natural methoxy bond, while the B acid of Al modified molecular sieve generates aliphatic hydrocarbon intermediates and phenolic compounds by breaking the C β -O bond and rearranging the methoxy bond. By chemical characterization of the acid modified molecular sieves and the bio-oil, the conformational relationship between the L acid and B acid of zeolite molecular sieves on the deoxygenation efficiency of Kraft lignin pyrolysis bio-oil is established.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ziwei Qin,Yi Yang,Qingli Tian,Hao-Yang Mi,Heng Li,Runhao Guo,Ying Wang,Chuntai Liu,Changyu Shen
Developing protective materials with intelligent and stimuli-responsive properties is indispensable for safety protection. However, combining contradictory characteristics into a single polymer is challenging, such as high mechanical strength, impact protection, and self-healing properties. Herein, a strain-hardening supramolecular polyurethane nanocomposite (SPN) with high mechanical strength and unique impact protection characteristics is synthesized by incorporating quadruple hydrogen bonds (H-bonds), disulfide bonds, and modified silica nanoparticles into polyurethane elastomer. Benefiting from the dynamic break and re-form characteristic of quadruple H-bonds and the stress dissipation behavior of nanoparticles, SPN exhibits high energy absorption efficiency and impact protection properties. During the drop ball striking test, the impact energy absorption efficiencies reached 90%, and the buffer time of impact was significantly longer than common buffering materials. The SPN exhibited excellent stretchability and self-healing ability, ascribing to disulfide metathesis and H-bonds association. Moreover, the prepared SPN could be easily processed through a hot press and showed negligible creeping. The developed SPN could serve as a novel self-standing impact protective material that offers promising prospects in sports, transportation, and aerospace fields.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Zihao Cui,Qianqian Zhang,Hui Fu,Qihao Liu,Xiaolei Liu,Yaqiang Wu,Peng Gao,Zeyan Wang,Zhaoke Zheng,Hefeng Cheng,Yuanyuan Liu,Ying Dai,Baibiao Huang,Peng Wang
Herein, a facile anti-solvent preparation strategy is proposed to fabricate lead-free halide perovskite Cs 3 Bi 2 Br 9 with TiO 2 , which boosts photocatalytic activation of C(sp 3 )−H bonds in toluene oxidation . TiO 2 not only works as nucleation center to reduce the particle size of perovskite, but could form type II heterojunction with Cs 3 Bi 2 Br 9 , thus improving the photocatalytic performance of the TiO 2 /Cs 3 Bi 2 Br 9 composite. Under AM 1.5 G simulated sunlight irradiation, the optimal TiO 2 /Cs 3 Bi 2 Br 9 composite exhibits both high production rate (9692.5 μmol g −1 h −1 ) and selectivity (91 %) of benzaldehyde product. As verified by in-situ ESR, in-situ FT-IR and DFT calculations, •O 2 − and h + are demonstrated to be the main active species in this process. This work provides a new insight into the design of high-performance lead-free perovskite photocatalysts for organic synthesis.
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高影响因子
危险品化学品经营许可证（带存储）