CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xingyue Yang,Lei Wang,Shijie Zhou,Shilong Zhang,Yongfang Xu,Yujie Bian,Zhaowei Tian,Yusen Yang,Min Wei
Liquid organic hydrogen carriers (LOHC), which involve reversible catalytic hydrogenation/dehydrogenation cycles, have attracted considerable attention. This study investigates Cu/CuAlO x catalysts with unique Cu 0 –Cu + interfacial sites, which are prepared via structural topological transformation of layered double hydroxide (LDH) precursors. The optimized Cu/CuAlO x catalysts exhibit exceptional catalytic activity in 1,2,3,4-tetrahydroquinoline (THQ) dehydrogenation, achieving a complete conversion of THQ within 1.5 h and a turnover frequency (TOF) value amounts to 19.94 h −1 at 150 °C, which stands at the highest echelon compared with previously reported heterogeneous catalysts. Furthermore, the catalyst also exhibits excellent performance in quinoline hydrogenation (yield >99 %) after 6 h at 60 °C, and the TOF value reaches up to 7.01 h −1 . A comprehensive investigation based on XPS, TEM and XAFS verifies the dual active states Cu 0 and Cu + sites coexisting on nanoparticle surfaces. Both experimental studies ( in situ DRIFTS and XPS) and DFT calculations reveal the pivotal role of the Cu 0 − Cu + synergistic effect in dictating catalytic behavior: the Cu + species preferentially adsorb and activate the N − H bonds and C − H bonds in N-heterocycles; Whereas the Cu 0 site facilitates efficient reassociation of surface adsorbed H atoms and product desorption (H 2 ). This work exhibits substantial potential for implementation in hydrogen storage technologies, offering a viable pathway towards efficient LOHC utilization in clean energy systems.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Li Zhang,Jun Cao,Pui Wo Felix Yeung,Hang Jiang,Jianzhong Jiang,Wei Liu,To Ngai
Poly( N -isopropylacrylamide)-based microgels are soft and deformable colloids, which can swell and shrink in response to external stimuli such as temperature or pH, making them suitable for various industries. Herein, poly(styrene- co - N -isopropylacrylamide) microgels with varying softness were synthesized through the doping of different proportions of styrene into their network structure. Rheological tests revealed that the deformability, surface charge, and wettability of microgels were precisely regulated through adjustments to styrene doping levels. As the molar ratio of styrene increased, the range of the linear viscoelastic region regarding stain did not exhibit a consistent change. The microgel suspensions exhibited a pronounced viscous-like behavior, as indicated by their frequency dependence. Additionally, the concentration or volume fraction of microgels significantly influenced the phase distribution in the phase diagram. At lower concentrations, the microgel suspensions typically underwent a colloidal gel-to-liquid-to-glass transition, with the liquid-like regime expanding as the styrene doping level increased. At higher microgel concentrations, the volume phase transition shifted to a direct colloidal gel-to-glass transition, particularly at high styrene levels. This study also revealed a strong correlation between the power-law viscoelastic exponents and the loss tangent during the entire phase transition, offering valuable insights for structure and rheological properties of poly( N -isopropylacrylamide)-based microgels.
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PubMed
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CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Lei Cao,Lin Liu,Kaiyi Luo,Pingping Qian,Haowen Chen,Yixiao Deng,Lei Yang,Xiaoyong Wu,Jun Tang
Skutterudites (SKDs) are promising thermoelectric (TE) materials due to their cost-effectiveness and favorable electrical properties. However, their high thermal conductivity limits thermoelectric conversion efficiency. Herein, Y 2 O 3 nanoparticles (NPs)-decorated n-type Yb 0.3 Co 4 Sb 12 were prepared by spark plasma sintering (SPS). The heterointerfaces created by Y 2 O 3 nanoparticles enhance charge carrier localization through O-Sb hybridization and O-Co bonding, which increases the Seebeck coefficient. Additionally, heterointerfaces scatter phonons, reducing thermal conductivity. Consequently, a figure of merit ( ZT ) value of ∼1.48 at 773 K and an average ZT ave of ∼1.0 (293 ∼ 823 K) were achieved in this work.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2024
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IF 4.3
Caimin He,Li Li,Ping Yin,Ting Lei
It has been critical and challenging to develop non-precious transition-metal-based eletrocatalysts with low-cost and long-term durability for efficient water splitting. Herein, self-supported nitrogen-doped tungsten carbide on iron-nickel foam (N-WC@INF) with three-dimensional flower-like structure was prepared by a simple hydrothermal reaction followed by simultaneous nitridation and carbonization . The resulting N-WC@INF exhibits an overpotential of 103 mV at a current density of 10 mA cm −2 in alkaline media and a low Tafel slope of 47 mV dec −1 , accompanied by a negligible loss of overpotential after 30 h consecutive hydrogen evolution reaction (HER). Additionally, N-WC@INF shows promising activity for oxygen evolution reaction (OER) with an overpotential of 224 mV at 10 mA cm −2 and a low Tafel slope of 22 mV dec −1 .
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ACS Catalysis
·
2024
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IF 11.3
Xiaohui Leng,Xin Zhou,Lu Ma,Yonghua Du,Ouwen Peng,Zhongxin Chen,Jinhui Pan,Ming-Yu Qi,Jian-Hui Zheng,Yi-Jun Xu,Kian Ping Loh
Visible light induced oxidative C–C and C–N coupling provides a milder alternative to the current synthetic strategies. However, the photochemical C–C coupling of benzylamine and chromoselective C–C/C–N conversion are not widely reported. Herein, we demonstrate that the introduction of indium vacancies in ZnIn2S4 improves the catalytic activity for C–C coupling of benzylamine and imparts a strong chromoselectivity for C–C or C–N coupled products. A high C–C selectivity of ∼80% is achieved with a benzylamine conversion of ∼80%. Mechanistic studies unveil the switchable reaction routes between kinetically favored C–C coupling and thermodynamically favored C–N coupling under specific illumination conditions.
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Nature Electronics
·
2024
·Vol. 7
·期 6
·444-453
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IF 33.7
Bukke Ravindra Naik,Syzgantseva Olga A.,A. Syzgantseva Maria,Aidinis Konstantinos,Soultati Anastasia,Verykios Apostolis,Tountas Marinos,Psycharis Vassilis,Alshahrani Thamraa,Ullah Habib,P. Zorba Leandros,C. Vougioukalakis Georgios,Wang Jianxiao,Bao Xichang,Jang Jin,Nazeeruddin Mohammad Khaja,Vasilopoulou Maria,Mohd Yusoff Abd. Rashid bin
The engineering of tin halide perovskites has led to the development of p-type transistors with field-effect mobilities of over 70 cm 2 V −1 s −1 . However, due to their background hole doping, these perovskites are not suitable for n-type transistors. Ambipolar lead halide perovskites are potential candidates, but their defective nature limits electron mobilities to around 3–4 cm 2 V −1 s −1 , which makes the development of all-perovskite logic circuits challenging. Here we report formamidinium lead iodide perovskite n-type transistors with field-effect mobilities of up to 33 cm 2 V −1 s −1 measured in continuous bias mode. This is achieved through strain relaxation of the perovskite lattice using a methylammonium chloride additive, followed by suppression of undercoordinated lead through tetramethylammonium fluoride multidentate anchoring. Our approach stabilizes the alpha phase, balances strain and improves surface morphology, crystallinity and orientation. It also enables low-defect perovskite–dielectric interfaces. We use the transistors to fabricate unipolar inverters and eleven-stage ring oscillators.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Lu Ji,Conghui Che,Fang Li,Wei Xue,Xiaoshu Ding,Dongsheng Zhang,Jing Li,Xinqiang Zhao,Yanji Wang
Methoxycarbonylation of aniline (AN) with dimethyl carbonate (DMC) to produce methyl N-phenylcarbamate (MPC), a key intermediate in non-phosgene diphenylmethane diisocyanate (MDI) synthesis, is facilitated using a newly developed CuO–CeO2 catalyst. This catalyst demonstrated a high AN conversion rate of 95.1% and an MPC selectivity of 92.7% at an nDMC/nAN ratio of 10. The catalyst's effectiveness is attributed to the synergistic interaction between CuO and CeO2, which enhances oxygen vacancy generation and increases the acid amount, as well as Lewis acid sites. Weak Lewis acid sites are conducive to MPC synthesis. There are three distinct copper species present in the CuO–CeO2 catalyst, among which the copper species doped into the CeO2 lattice is beneficial to MPC synthesis. The deactivation of the catalyst, due to the reduction of CuO by methanol, and catalyst regeneration through calcination are discussed. The catalytic mechanism is explored with in situ FT-IR, providing deeper insight into the methoxycarbonylation process.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2025
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IF 6.3
Ruishuo Guo,Huijia Wang,Qingwen Wen,Xin Xu,Yanlan Zhou,Xiaoqiang Shao,Ni Li
Phase change capsules effectively address the limitations of leakage and poor stability of phase change materials (PCMs). In this study, SiO 2 @n-Octadecane phase change nanocapsules (PCNCs) with controllable size and structure are prepared by controlling material ratios. When Water-to-EtOH ratio is 2:1 and C 18 -to-TEOS ratio is 3:3 in the reaction system, prepared PCNCs show excellent phase change enthalpy of 152.9 J/g and high encapsulation ratio of 73.77 %, with desirable thermal stability and reliability. After the irradiation of simulating sunlight for 1500 s, the PCNCs achieved a temperature buffer of 6 °C compared with blank cotton fabric, and the cotton fabric with the PU coating containing the PCNCs presents up to 13.2 °C temperature reduction compared with original cotton fabric. The prepared SiO 2 @n-Octadecane PCNCs present excellent heat storage and thermal management performance and effective strategy to develop long-term thermal comfort smart textiles.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Shuwen Zhu,Huiqing Fan,Peizhi Dong,Yuxin Jia,Lin Lei,Yao Su,Yongbo Fan,Weijia Wang
Achieving high sensitivity and reliable detection of trace volatile organic compounds (VOCs) at room temperature remains a significant challenge for metal oxide semiconductor (MOS)-based gas sensors. In this work, we synthesized WO 3 microspheres and PEDOT:PSS@WO 3 (PPW) core-shell heterostructures through a combination of solvothermal treatment and in situ polymerization. The resulting composites were used as active sensing materials for triethylamine vapor detection at room temperature. The PPW-based sensors exhibited excellent TEA sensing performance, which may arise from the synergistic effects of the strong amine affinity of PEDOT:PSS, p–n heterojunction at the PEDOT:PSS/WO 3 interface and the core-shell structure that promotes efficient charge separation and transport. This study demonstrates the significant potential of PPW heterostructures for high-performance, room-temperature sensing of amine vapors and offers a promising strategy for next-generation gas sensor design.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Fangling Zhou,Zhuangzhuang Mu,Zhenyu Yuan,Renze Zhang,Xin Yan,Fanli Meng
N-butanol is a volatile organic compound (VOC) that is harmful to human health, and the development of gas sensors for n-butanol vapor detection is necessary. In this work, the nanoflowers-like ZnSnO 3 was synthesized via a one-step hydrothermal route followed by an annealing process. The results revealed that optimizing the hydrothermal time to 12 h resulted in ZnSnO 3 -2 exhibiting the highest gas response (40.48) towards 100 ppm n-butanol at 275°C, boasting a detection limit of 500 ppb. Furthermore, ZnSnO 3 -2 exhibits excellent gas selectivity and long-term stability. The improved sensing performance of ZnSnO 3 -2 was attributed to its large specific surface area and abundant oxygen vacancies. Additionally, the gas sensing mechanism for enhancing n-butanol detection was comprehensively analyzed. These results highlight the potential of nanoflower-like ZnSnO 3 as a promising candidate for n-butanol gas sensing material, offering both high sensitivity and selectivity. Moreover, this research provides valuable guidance for the development and optimization of gas sensing materials for applications in environmental monitoring and industrial safety.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yifeng Li,Haoxuan Yu,Yuan Ding,Meiting Huang,Yaohui Xie,Peilin Li,Zhihao Wang,Lihua Wang,Liang Chen,Xubiao Luo,Liming Yang
During long–term cycling of LiFePO 4 (LFP) cathodes, the accumulation of surface side reactions usually causes lithium loss and gradual formation of iron phosphate (FP) phase, thus resulting in progressive performance degradation of LFP. Herein, a N doping–assisted regeneration strategy for LFP cathodes is proposed. The inherent carbonaceous impurities in spent LFP are utilized to reconstruct a carbon coating, along with simultaneous N doping by the added urea, thereby enabling the regeneration of high–performance LFP cathodes. The regenerated material (N–doped carbon coated regenerated LFP, abbreviated as RLFP@NC) has a well–maintained crystal structure, which shows an excellent discharge capacity of 106.3 mAh g −1 at a high rate of 5C (1C = 170 mA g −1 ) and a remarkable cycling stability with a capacity retention of 87.2 % after 500 cycles. Theoretical calculations reveal that this enhanced structural stability and improved electrical conductivity are primarily attributed to the presence of N–doped carbon coating. Furthermore, the economic analysis demonstrates that our adopted method is featured with excellent cost–effectiveness and environmental friendliness, offering a viable approach for the green and low–carbon recycling of LFP cathodes.
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DYES AND PIGMENTS
·
2025
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IF 4.2
Xin-Ke Shao,Lu Fan,Jie-Li Zhou,Kai Wang
The development of novel molecular probes for real-time monitoring of aminopeptidase N (APN) activity is crucial for understanding inflammatory bowel disease (IBD) progression. Here, we present a new probe, HDAPN, a near-infrared (NIR) activatable fluorescent probe based on a hemicyanine scaffold, designed for selective APN detection. Structural characterization confirmed the molecular integrity of the probe, while spectroscopic studies demonstrated its exceptional photostability and response. HDAPN exhibits a remarkable "turn-on" response (720 nm emission) upon APN-mediated cleavage, with outstanding sensitivity (LOD = 0.82 ng/mL) and linearity under physiological conditions. The probe showed minimal cross-reactivity with interferents (e.g., ROS, metal ions, and other enzymes) and successfully detected LPS-induced APN upregulation in RAW264.7 macrophages. In DSS-induced colitis models, HDAPN enabled non-invasive visualization of APN activity, with fluorescence intensity correlating with disease severity (2-fold increase in severe colitis). Comprehensive toxicity evaluations confirmed its biosafety in vitro and in vivo . These findings highlight the potential of HDAPN as a robust tool for studying APN-associated pathophysiology and therapeutic development.
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