CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.2
Bashir Adegbemiga Yusuf,Hennayaka Mudiyanselage Charitha Madusanka Jayawardana,Waleed Yaseen,Jimin Xie,Yilin Deng,Suci Meng,Yongming Li,Abdussamad Mukhtar Mohammed,Aminu Magaji,Min Chen,Meng Xie,Yuanguo Xu
Robust metal-support interactions are crucial for designing efficient and corrosion-resistant electrocatalysts, as they significantly enhance charge separation and catalytic activity while also improving the stability and atomic utilization of metal catalysts. Here, we reported a temperature-regulated synthesis strategy to fabricate a self-supporting Ru/B,N co-doped MoO 2 electrocatalyst on a CNT framework (RBNM/CNTs 500 ), designed to simultaneously enhance catalytic activity and durability under practical electrolyzer conditions. The RBNM/CNTs 500 featured a unique nanostructure with excellent conductivity and strong chemical stability, while oxygen-vacancy-rich MoO 2 units at the interface reinforced metal-support interactions. This architecture stabilized Ru species during the OER and facilitated proton transfer, thus accelerating HER kinetics as confirmed by density functional theory calculations. As a result, RBNM/CNTs 500 exhibited outstanding bifunctional electrocatalytic performance, achieving exceptionally low overpotentials of 9 mV for the HER and 166 mV for the OER at 10 mA cm ‒2 , along with superior overall water-splitting activity characterized by a low cell voltage of 1.42 V and stable ampere-level operation at 10, 1000, and 2000 mA cm ‒2 in alkaline media. When integrated into an anion-exchange membrane water electrolyzer, RBNM/CNTs 500 demonstrated exceptional durability and surpassed benchmark electrocatalysts in performance. This study offers mechanistic insights into defect engineering and underscores a rational design approach for next-generation energy conversion devices.
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高影响因子
Petroleum Exploration and Development
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2021
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IF 3.803
Hang SU,Fujian ZHOU,Yang LIU,Yajun GAO,Baoyang CHENG,Rencheng DONG,Tianbo LIANG,Junjian LI
Microscopic computed tomography (Micro-CT) is used to visualize microscopic flow in sandstone core samples during emulsion flooding. The images obtained during the experiment are processed quantitatively with a series of methods to evaluate the occurrence characteristics and oil recovery enhancement mechanisms of emulsion. (1) The emulsion is distributed in the cores in spherical shape, and its sphericity is significantly different from that of the remaining oil. Sphericity can be taken as a characteristic parameter to identify emulsion. (2) The emulsion with specific size prefers to stay in pores with matching sizes; when the emulsion volume is smaller than the product of the lower limit of pore occupancy and the corresponding pore volume, it will not be able to effectively trap in the pore to achieve conformance control. In the process of emulsion displacement designing, we need to design emulsion with suitable particle size according to the pore distribution of the reservoir. (3) Mobilization ratio of the pores can be increased from 23.1% to 59.3% by emulsion flooding after subsequent water flooding, and the average oil displacement efficiency at the pore-scale can be increased from 22.9% to 75.8% under the test conditions; (4) After emulsion flooding, the clustered remaining oil and the oil phase in the trapped emulsion are the main targets for further EOR.
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高影响因子
RARE METAL MATERIALS AND ENGINEERING
·
2016
·Vol. 45
·期 7
·1664-1668
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IF 0.236
Zhang Lingjie,Shen Tao,Shen Qianhong,Zhang Ji,Chen Lawson,Fan Xianping,Yang Hui
La 2 Sn 2 O 7 /SnO 2 composite powder was synthesized by chemical co-precipitation, and Ag-La 2 Sn 2 O 7 /SnO 2 electrical contact material was prepared by a powder metallurgy method. Anti-arc erosion properties, mass loss and Vickers hardness of the Ag-La 2 Sn 2 O 7 /SnO 2 composite were investigated, and its anti-arc erosion mechanism was discussed. Results show that the welding force of Ag-La 2 Sn 2 O 7 /SnO 2 composite is much better than that of Ag-SnO 2 , because the new phase La 2 Sn 2 O 7 can increase the viscosity of melt pool and improve wettability between silver and tin oxide to some extent. Meanwhile, Flatter arcing area and “beads-like” particles embedded scatteredly in the surface could decentralize arc energy via “pinning effect”, which decreases temperature rise and weakens the damage of surface structure, and better anti-welding property is obtained. Ag-La 2 Sn 2 O 7 /SnO 2 composite could be a leading candidate material for electrical contacts in the future.
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高影响因子
Progress in Natural Science-Materials International
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2012
·Vol. 21
·期 6
·472-477
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IF 1.099
Na YIN,Shi-yan CHEN,Yang OUYANG,Lian TANG,Jing-xuan YANG,Hua-ping WANG
Hydroxyapatite (HAp)/bacterial cellulose (BC) nanocomposites were prepared by an optimal biomimetic mineralization synthesis approach for bone tissue engineering application. BC with ultrafine three dimensional network was negatively charged by the adsorption of polyvinylpyrrolidone (PVP) to initiate the nucleation of HAp. The HAp was grown in vitro along the nanofiber network of BC via dynamic simulated body fluid (SBF) treatment. It was found that rod-like HAp particles in the nano-scale (100–200 nm) homogeneously deposited on the surface of PVP-BC. ATR-Fourier Transform Infrared Spectroscopy (ATR-FTIR) results showed that carbonate-containing HAp crystals resembling natural bones were formed by biomimetic mineralization method. Moreover, the amount of HAp observed increased with increasing mineralization time. And the Ca/P overall ratio ranged from 1.37 to 1.59. The results from Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) indicated that PVP treatment enhanced the apatite nucleation ability of BC with higher HAp deposit amount.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2022
·Vol. 43
·期 9
·2443-2452
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IF 12.92
Yaojia Cheng,Haoqiang Song,Jingkun Yu,Jiangwei Chang,Geoffrey I.N. Waterhouse,Zhiyong Tang,Bai Yang,Siyu Lu
The sluggish kinetics of oxygen reduction reaction (ORR) hinders the commercialization of Zn-air batteries (ZABs). Manipulating the electronic structure of electrocatalysts to optimize the adsorption energy of oxygen-containing intermediates during the 4e − ORR offers a practical route toward improving ORR kinetics. Herein, we designed a novel ORR electrocatalyst containing Co single atoms and nanoparticles supported by carbon dots-derived carbon nanoflowers (Co SAs/NPs CNF). Co SAs/NPs CNF possessed a very high ORR activity ( E 1/2 of the Co SAs/NPs CNF catalyst is 0.83 V ( vs. RHE)), and outstanding catalytic performance and stability when used as the air-electrode catalyst in rechargeable ZABs (152.32 mW cm −2 , 1000.58 mWh g Zn −1 , and over 1300 cycles at a current density of 5 mA cm −2 ). The Co SAs and Co NPs cooperated to improve electron and proton transfer processes during ORR. Theoretical calculations revealed that the presence of adjacent Co NPs optimized the electronic structure of the isolated Co-N 4 sites, significantly lowering the energy barriers for the rate-determining step in ORR (adsorption of *OOH) and thereby delivering outstanding ORR performance. This work reveals that the combination of supported single-atom sites and metal nanoparticles can be highly beneficial for ORR electrocatalysis , outperforming catalysts containing only Co SAs or Co NPs.
研究领域:
电化学
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纳米材料科学
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能源化学
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催化化学
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先进电池技术
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.7
Juxia Xiong,Hao Ma,Yingjun Dong,Benjamin Liu,Xiangji Zhou,Linbo Li,Yuanmiao Sun,Xiaolong Zhang,Hui-Ming Cheng
Bi-based catalysts are known to promote the electrochemical reduction of CO 2 to formic acid (HCOOH) or formate (HCOO − ). However, their implementation presents challenges: the first H + /e − pair transfer to form the key *OCHO intermediate on a Bi surface is a slow, kinetically sluggish endergonic process, resulting in a large overpotential and narrow potential window for high HCOOH/HCOO − selectivity. Altering the localized p -orbital electron states of Bi to change intermediate binding behaviors is difficult. We addressed this problem by using an in-situ polymerization method to obtain a polyaniline-Bi hybrid (PANI-Bi) with Bi surrounded by PANI chains. Combined experimental and computational studies indicate that the polyaniline acted as an “electron pump” that facilitated charge transfer from the PANI backbone to the Bi surface and changed the p -orbital electrons of the Bi active sites. This lowered the energy barrier for the adsorption of intermediates and facilitated *OCHO formation. Consequently, a significant increase in formate production was observed, achieving a single-pass carbon efficiency exceeding 48.7% at 800 mA cm −2 . This organic functionalization strategy, aimed at modifying the electronic structure of heterogeneous catalysts, offers a promising approach for achieving highly selective electroreduction of CO 2 at a high current density.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.2
Hua Gao,Yong Zhu,Zhibing Wen,Ran Zhao,Zhi Chen,Siyao Wang,Shuanglin He,Kuang Peng,Yiwen Tang,Licheng Sun,Fei Li
Solar-driven photocatalytic CO 2 conversion offers a sustainable solution for greenhouse gas mitigation and renewable energy storage. While metal phthalocyanines (MPc) exhibit excellent CO 2 reduction capabilities, their practical application in dispersed photocatalytic systems faces limitations of the stacking of MPc molecules that reduces active site accessibility, and inefficient electron transfer limited by diffusive mass transport. To address these challenges, we developed a bioinspired dye-sensitized RuP-TiO 2 -FePc nanosheets (NSs) hybrid system, where ultrathin FePc NSs obtained by liquid-phase ultrasonic exfoliation enhance active site exposure and mass transfer, while TiO 2 serves as a mediator to facilitate electron transfer between the photosensitizer and FePc NSs. Time-resolved spectroscopic studies demonstrate that TiO 2 plays a dual role: it spatially organizes functional components to enable surface electron transfer by shortening intermolecular distances, while also functioning as a semiconductor bridge to facilitate charge transport. This synergistic design achieves a remarkable CO production rate of 27.3 mmol g –1 h –1 (> 98% selectivity) and exceptional stability (TON CO = 1363 over 100 h), outperforming many noble-metal-based systems. Our work demonstrates a robust strategy for optimizing bulk catalysts through 2D exfoliation and controlled heterogenization, offering a versatile platform for efficient and durable artificial photosynthesis.
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高影响因子
NEW CARBON MATERIALS
·
2026
·Vol. 41
·期 3
·641-651
·
IF 7.2
Zhiqiang Yang,Hao Yang,Rui Wang,Yi Wan,Yan Zhang,Chenhao Liu,Zian Zhang,Yuqi Li,Mingbo Wu,Han Hu,De Chen
Aqueous zinc-ion batteries (AZIBs) have significant promise as large-scale energy storage devices due to their high safety, low cost, and environmental friendliness. However, their application has been constrained by limited operational voltage windows. A high-voltage-resistant Ti-graphene-Ti cathode current collector (TGT) was designed and fabricated by three-dimensional (3D) printing. The surface of the TGT has a Ti x O y protective layer, which effectively suppresses electrolyte decomposition under high voltage conditions so that the voltage window of the battery is extended to 1.0–2.2 V without the obvious formation of by-products. Simultaneously, the graphene layer in the TGT structure significantly improves the adsorption and insertion/extraction kinetics of cations, resulting in a high specific capacity of 307.5 mAh g −1 and a prolonged cycling life of the battery. The resultant AZIBs have a stable charge/discharge performance over 400 cycles at a high voltage. Furthermore, the influence of the geometric arrangements of Ti and graphene in the 3D printing process on the energy storage mechanism was investigated and provided novel insight for the development of high-voltage-resistant composite cathode current collectors for AZIBs.
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CHINESE JOURNAL OF CATALYSIS
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2023
·
IF 16.5
Xingzong Dong,Guangye Liu,Zhaoan Chen,Quan Zhang,Yunpeng Xu,Zhongmin Liu
Compared with the rapid deactivation of the Pd/AC catalyst, an eco-friendly Pd-[DBU][Cl]/AC ([DBU][Cl], 1,8-diazabicyclo[ 5.4.0 ]undec-7-ene hydrochloride) catalyst with enhanced stability was synthesized and applied in the hydrochlorination of acetylene. The Pd-20[DBU][Cl]/AC catalyst exhibits 96.7% acetylene conversion and 98.9% selectivity of vinyl chloride within the 24 h evaluation under the conditions of T = 180 °C, GHSV(C 2 H 2 ) = 360 h –1 and V (HCl)/ V (C 2 H 2 ) = 1.2. The enhanced stability of the Pd-[DBU][Cl]/AC catalyst is attributed to the prevention of the reduction of Pd(II) to Pd(0), the inhibition of the formation of coke deposition on the catalyst surface, and the reduction of the loss of Pd species during the reaction. TPD characterization and DFT theoretical simulations confirmed that the PdCl 2 -[DBU][Cl] complex has stronger adsorption of HCl and weaker adsorption of C 2 H 2 and C 2 H 3 Cl compared to PdCl 2 . Furthermore, the catalytic mechanism of acetylene hydrochlorination over the PdCl 2 and PdCl 2 -[DBU][Cl] site was put forward based on theoretical simulations. The good activity and stability of Pd-20[DBU][Cl]/AC in the 60 h lifetime test indicates that it is likely to be a promising alternative to HgCl 2 catalysts.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Yujie Li,Yuanyuan Liu,Zeyan Wang,Peng Wang,Zhaoke Zheng,Hefeng Cheng,Ying Dai,Baibiao Huang
Photocatalytic H 2 O 2 evolution has received extensive attention as an environmentally friendly method, which is a dynamic process of formation and decomposition. At present, researches mainly focus on the H 2 O 2 formation, while the decomposition of H 2 O 2 is rarely studied. In addition, platinum as a cocatalyst plays an important role in enhancing the photocatalytic activity, but the effects of platinum valence state on the activity, especially towards H 2 O 2 formation and decomposition, has not been studied in detail to the best of our knowledge. In this work, platinum with different valence state were deposited onto boron containing metal organic frameworks (UiO-67-B), and the roles of Pt(0), Pt(II) and Pt(IV) in the photocatalytic H 2 O 2 process were explored in detail. Both the experimental results and theoretical calculations indicate that the presence of Pt(II) plays an important role not only in promoting the H 2 O 2 formation but also in inhibiting the H 2 O 2 decomposition.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Xuan Li,Xingxing Jiang,Yan Kong,Jianju Sun,Qi Hu,Xiaoyan Chai,Hengpan Yang,Chuanxin He
Electrocatalytic CO 2 reduction reaction (eCO 2 RR) to obtain formate is a promising method to consume CO 2 and alleviate the energy crisis. Indium-based electrocatalysts have demonstrated considerable potential to produce formate. However, their unsatisfactory long-term stability and selectivity restrict their widespread application. In this study, a heterostructure of GaN- and In 2 O 3 -encapsulated porous carbon nanofibers was constructed via electrospinning and the phase transition of eutectic gallium-indium during calcination . The GaN and In 2 O 3 nanoparticle-encapsulated porous carbon nanofibers, when used as electrocatalysts for eCO 2 RR, displayed high formate selectivity with a faradaic efficiency of 87% and maximum partial current density of 29.7 mA cm −2 in a 0.5 mol L −1 KHCO 3 aqueous solution. The existence of the interface can cause a positive shift in the In 3 d binding energy, leading to electronic redistribution. Moreover, the GaN component induced a higher proportion of O-vacancy sites in the In 2 O 3 phase, resulting in improved selectivity for CO 2 -to-formate. In-situ Raman experiments and density functional theory calculations revealed that the interface between GaN and In 2 O 3 could lower the adsorption energy of the key intermediates for formate production, thus providing superior eCO 2 RR performance. In addition, the framework of the porous carbon nanofibers exhibited a large electrochemically active surface area, which enabled the full exposure of the active sites. This study highlights the cooperation between GaN and In 2 O 3 components and provides new insights into the rational design of catalysts with high CO 2 -to-formate conversion efficiencies.
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高影响因子
Journal of Semiconductors
·
2022
·Vol. 43
·期 9
·092201
·
IF 0
Chen Gao,Hui Wang,Pang Wang,Jinlong Cai,Yuandong Sun,Cong Yu,Teng Li,Xiaoshuai Zhang,Dan Liu,Tao Wang
Defects as non-radiative recombination centers hinder the further efficiency improvements of perovskite solar cells (PSCs). Additive engineering has been demonstrated to be an effective method for defect passivation in perovskite films. Here, we employed (4-methoxyphenyl) potassium trifluoroborate (C7H7BF3KO) with {{\rm{BF}}_3^-} and K+ functional groups to passivate spray-coated (FAPbI3)x(MAPbBr3)1–x perovskite and eliminate hysteresis. It is shown that the F of {{\rm{BF}}_3^-} can form hydrogen bonds with the H atom in the amino group of MA+/FA+ ions of perovskite, thus reducing the generation of MA+/FA+ vacancies and improving device efficiency. Meanwhile, K+ and reduced MA+/FA+ vacancies can inhibit ion migration, thereby eliminating hysteresis. With the aid of C7H7BF3KO, we obtained hysteresis-free PSCs with the maximum efficiency of 19.5% by spray-coating in air. Our work demonstrates that additive engineering is promising to improve the performance of spray-coated PSCs.
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危险品化学品经营许可证（带存储）