JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Lin Wang,Li Liu,Jiayi Xu,Zongjian Liu,Junhui Cao,Zhengfei Chen
Sluggish water dissociation kinetics consistently constrain the hydrogen evolution reaction (HER) in alkaline environments. Herein, we report a unique two-dimensional (2D) nanosheet electrocatalyst in which ruthenium (Ru) atoms are incorporated within a cobalt oxide heterojunction. Due to the electronic optimization of Ru sites engendered by the support effect of the cobalt oxide heterojunction, the Ru-Co 3 O 4 /CoO catalyst exhibits superior alkaline HER performance, characterized by an ultralow overpotential of 20 mV at 10 mA cm −2 and a notably small Tafel slope of 36 mV dec −1 , outperforming most previously reported noble-metal-based HER catalysts and the benchmark commercial Pt/C catalyst. Electrochemical measurements and electronic-structure analyses reveal efficient electron transfer from Ru to the Co₃O₄/CoO heterojunction, which promotes the formation of electron-deficient Ru sites and thereby result in exceptional HER activity. In situ Raman spectroscopy and theoretical calculations further demonstrate that modulation of Ru sites by the Co₃O₄/CoO heterojunction facilitates water dissociation, consequently accelerating the overall alkaline HER kinetics.
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PubMed
高影响因子
Science China-Chemistry
·
2022
·Vol. 65
·期 3
·521-531
·
IF 10.138
Chen Zhida,Chen Wenda,Zheng Lirong,Huang Tao,Hu Jing,Lei Yaqi,Yuan Qi,Ren Xiangzhong,Li Yongliang,Zhang Lei,Huang Shaoluan,Ye Shenghua,Zhang Qianling,Ouyang Xiaoping,Sun Xueliang,Liu Jianhong
In this study, the morphological distribution of Ru on nitrogen-doped graphene (NG) could be rationally regulated via modulating the combination mode between Ru precursor and the zeolite imidazolate framework-8 (ZIF-8). The cation exchange and host-guest strategies respectively resulted in two different combination modes between Ru precursor and ZIF-8 anchored on graphene. Following pyrolysis of the above precursors, Ru single-atom sites (SASs) with and without Ru nanoparticles (NPs) were formed selectively on NG (denoted as Ru SASs+NPs/NG and Ru SASs/NG, respectively). Ru SASs+NPs/NG exhibited excellent hydrogen evolution reaction (HER) performance in alkaline solutions ( η 10 =12 mV, 12.57 A mg −1 Ru at 100 mV), which is much better than Ru SASs/NG. The experimental and theoretical study revealed that Ru SASs could adsorb hydrogen with optimal adsorption strength, while Ru NPs could lower the barrier of water molecule dissociation, and thus Ru SASs and Ru NPs could synergistically promote the catalytic performance of HER in alkaline solutions.
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ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Xia Cheng,Hua Wang,Mei Ming,Wenxiu Luo,Yi Wang,Yingchun Yang,Yun Zhang,Daojiang Gao,Jian Bi,Guangyin Fan
Developing efficient and affordable alternatives for Pt-based electrocatalysts to promote the procedure of hydrogen evolution reaction (HER) is of significant importance. Herein, a facile and convenient strategy using tris(2,2′-bipyridyl)ruthenium(II) chloride hexahydrate as precursor is developed for synthesizing ultrafine and highly dispersed ruthenium nanoclusters on carbon support. It is discovered that the preadsorption of Ru precursor on carbon substrate and followed by pyrolysis are very crucial for the synthesis of such Ru nanoclusters. Among as-prepared samples, Ru/CN-800 shows the best HER electrocatalytic performance in alkaline solution, which outperforms the benchmark Pt/C and recently reported catalysts. The excellent performance of Ru/CN-800 was presumably attributed to the dominant metallic Ru as well as the ultrasmall Ru nanoclusters with a satisfied dispersion, which provides the massive highly active sites for HER. This facile and environmental-friendly pathway for synthesis of ultrasmall Ru nanoclusters with high HER activity shows a promise in practical applications.
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高影响因子
Processes
·
2025
·Vol. 13
·期 8
·2594
·
IF 2.8
Tao Shi,Xiaoling Huang,Zhan Zhao,Zizhen Li,Kelei Huang,Xiangchao Meng
Electrocatalytic water splitting has been demonstrated to be a highly efficient and promising technology for green hydrogen production. However, the inefficiency and instability of the cathode hinder its wide application in water electrolysis. Herein, we report a rapid Joule heating method for synthesizing the Ru-Mo oxide catalyst. Comprehensive characterization results confirmed that the as-prepared catalyst featured an internal porous structure with low crystallinity, which weakened the strength of Ru-H bonds through structural and electronic modulation. The enhanced HER performance was attributed to the incorporation of Mo4+species, which strengthened Ru-O-Mo interactions. As tested, the optimized catalyst exhibited ultralow overpotentials (25.08 mV and 120.52 mV @ 10 and 100 mA cm−2, respectively) and excellent stability (100 h @ 100 mA cm−2) in a 1 M KOH solution. Meanwhile, the as-prepared catalyst was equipped in an anion exchange membrane (AEM) alkaline water electrolyzer, which could deliver 185 mA cm−2at only 2.16 V with 100% Faradaic efficiency. This study provides a feasible strategy for constructing highly efficient low-crystallinity electrocatalysts.
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NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 19
·7962-7967
·
IF 3.288
Zichuang Li,Yu Pei,Qiangjian Ju,Beibei Guo,Yifan Hu,Qian Liu,Yufang Zhu,Jiacheng Wang
The preparation of a highly active, cost-effective catalyst is the key to the commercial production of hydrogen through the electrochemical splitting of water, which is an ideal route to a clean energy conversion and storage system in the future. Unfortunately, the current catalysts for HER are rarely able to balance performance and cost. Herein, we successfully prepared an efficient catalyst (Ru/N–C) for HER by a facile method through a multi-step pyrolysis hard template. The electrochemical tests show that the HER activity of the synthesized Ru/N–C-6% catalyst with an onset potential of 0 mV and an overpotential of 34 mV at 10 mA cm−2 was comparable to that of Pt/C in 1 M KOH. Moreover, after 10 000 cycles, the potential change at 10 mA cm−2 is almost negligible. The origin of this high activity was analyzed via density functional theory (DFT), and the mechanism is further understood. Therefore, this work provides a promising substitute for Pt-based catalysts.
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高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2021
·
IF 4.354
Ming Li,Jun-Yang Tao,Liang-Neng Wang,Jia-Wei Li,Yue-Jin Liu,Ming-Hua Zeng
Modification of commercially available biaryl monophosphine ligands via ruthenium(II)-catalyzed P(III)-directed-catalyzed ortho C–H secondary alkylation is described. The use of highly ring-strained norbornene as a secondary alkylating reagent is the key to this transformation. A series of highly bulky ligands with a norbornyl group were obtained in excellent yields. The modified ligands with secondary alkyl group outperformed common substituted phosphines in the Suzuki–Miyaura cross-coupling reaction at a ppm mole level of Pd catalyst.
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ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Jiachen Li,Qingwen Zhou,Zihan Shen,Shengwen Li,Jun Pu,Chenglin Zhong,Mengqiu Cao,Xin Jin,Huigang Zhang,Yaoyu Wang,Haixia Ma
Rational design of combined noble metals and earth abundant metal-based materials is important in the development of highly active and stable electrocatalysts with reduced noble metal loading toward hydrogen evolution reaction (HER). As a cheaper alternative to platinum (Pt), ruthenium (Ru) has similar bond strength with hydrogen. In this work, we develop carbon fiber-supported cobalt carbonate hydroxides nanowires for the deposition of Ru (CF@Ru–CoCH NWs) and achieve high HER performance under alkaline condition. Such novel catalyst exhibits a low Tafel slope (65 mV dec −1 ), small overpotential of, respectively, 66 and 121 mV at geometrical current density of −10 and −100 mA cm −2 . The superior performance, comparable to commercial Pt for HER, is attributed to the synergistic effect from Ru nanoparticles (NPs) and cobalt carbonate hydroxides nanowires (CoCH NWs). Dual-pathway kinetic analysis confirms that the CoCH NWs are able to lower the energy barrier of the Volmer step while Ru improves the Heyrovsky step to form hydrogen gas, thereby enhancing overall HER activity.
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高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Zi-Yu Fu,Hou-Ming Xu,Wan-Hong Li,Guan-Ping Jin,Shi-Kui Han
Ruthenium (Ru)-based materials, as a class of efficient hydrogen evolution reaction (HER) catalysts, play an important role in hydrogen generation by electrolysis of water in an alkaline solution for clean hydrogen energy. Hybrid nanostructure (HN) materials, which include two or more components with distinct functionality, show better performance than their individual materials, since HN materials can potentially integrate their advantages and overcome the weaknesses. However, it remains a challenge to construct Ru-based HN materials with desired crystal phases for enhanced HER performances. Herein, a series of new Ru-based HN materials (t-Ru-RuS2, S-Ru-RuS2, and T-Ru-RuS2) through phase engineering of nanomaterials (PEN) and chemical transformation are designed to achieve highly efficient HER properties. Owing to the plentiful formation of heterojunctions and amorphous/crystalline interfaces, the t-Ru-RuS2 HN delivers the most outstanding overpotential of 16 mV and owns a small Tafel slope of 29 mV dec–1 at a current density of 10 mA cm–2, which exceeds commercial Pt/C catalysts (34 mV, 38 mV dec–1). This work shows a new insight for HN and provides alternative opportunities in designing advanced electrocatalysts with low cost for HER in the hydrogen economy.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 9
·242
·
IF 2.5
Shi Guopu,Shi Fangxu,Liang Fuxin,Wei Yulin,Li Yuanguang,Han Yubing,Wu Junyan,Huang Sai,Wang Honglei,Ji Jun,Wu Chao
Ethyl 3-piperidine-carboxylate is an important intermediate in the pharmaceutical field. To break through the limitations of poor mechanical strength and thermal stability of catalysts and low catalytic efficiency of foam ceramic carriers due to the lack of active sites in traditional synthesis, this study used the hydrogenation synthesis of ethyl nicotinate to produce this intermediate as the probe reaction. Pd-Ni/Ru-Al 2 O 3 -SiO 2 foam ceramic catalysts were prepared by the sol-gel method and the impregnation method. Relying on the bimetallic differentiated synergistic effect of Ni, Ru, and Pd, the above technical bottlenecks were overcome. A variety of characterization techniques reveal its core mechanism of action: Pd serves as the catalytic core, and Ni can optimize the electronic structure, enabling the Pd-Ni alloy to obtain the optimal d-band center and adsorption energy, laying an electronic foundation for efficient catalysis. Ru can precisely control the particle size of Pd-Ru alloy, which is 4.5 nm smaller than that of single-metal Pd, significantly improving the metal dispersion and the utilization rate of active sites. The three-dimensional network structure of foam ceramics enhances mass transfer efficiency. The γ-Al 2 O 3 -SiO 2 coating provides abundant active sites and excellent stability. The catalytic performance of this system has been significantly enhanced. Among them, the yield of the corresponding product of the Pd-Ni bimetallic catalyst reached 92.57%, and it still remained above 80% after five cycles of use, providing new prospects for the green and efficient synthesis of ethyl 3-piperidine-carboxylic acid esters and the development of low-cost hydrogenation catalysts. Graphical
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ACS Nano
·
2026
·Vol. 20
·期 32
·22716-22728
·
IF 17.3
Wu Yunshuo,Wang Haiqiang,Wu Zhongbiao
Valorization
of nitrous oxide (N 2 O), a potent greenhouse
gas, through cooperative reforming with light alkanes offers a promising
route toward carbon-negative hydrogen production. Here, we report
a Ru 1+n /ZnO catalyst that integrates isolated ruthenium
single atoms (Ru 1 ) with subnanometre ruthenium nanoparticles
(Ru n ), enabling cascade N 2 O valorization coupled
with propane dry reforming. The catalyst reduces noble-metal cost
by ∼70% compared with Ir-based benchmarks while delivering
markedly enhanced hydrogen production (145.1 mol H 2 kg cat –1 h –1 ) together with
stable operation for at least 72 h. Mechanistic studies reveal that
densely anchored Ru 1 sites in close proximity to Ru n electronically modulate the nanoparticles toward a more metallic
state, promoting hydrocarbon activation. Meanwhile, CH x * intermediates formed on Ru n are rapidly
consumed through reforming with O* species generated on satellite
Ru 1 via N 2 O activation, enabling an efficient
cascade reaction pathway that suppresses side reactions and enhances
hydrogen generation. This work demonstrates a cooperative single-atom–nanoparticle
catalytic strategy for greenhouse-gas valorization and efficient hydrogen
production, providing insights into the rational design of multifunctional
reforming catalysts.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Rui Li,Sen Bai,Jianxin Liu,Qing Xi,Long Cao,Jinghao Fan,Yawen Wang,Houfen Li,Huibin Ge,Caimei Fan,Lulu Zhang,Shan Gao,Fangxia Xie,Jiancheng Wang
Photocatalytic water splitting is a promising approach for sustainable green hydrogen production, but its practical deployment is severely hindered by two critical limitations: mandatory H 2 /O 2 separation and the requirement for high-pressure hydrogen storage facilities. To address this long-standing bottleneck, a Ru-TiO 2 /Ti 2 C heterostructured photocatalyst is fabricated via a combined hydrothermal and ball-milling route. Operando spectroscopy and DFT calculations verify a cascade charge and hydrogen transfer pathway: photogenerated electrons migrate from TiO 2 to metallic Ru sites to drive water dissociation into surface H* intermediates, which then spillover onto the Ti 2 C substrate. Owing to the strong atomic hydrogen affinity of Ti 2 C, accumulated H* is immobilized in the Ti 2 C lattice via Ti-H covalent bonds, achieving in-situ atmospheric-pressure hydrogen storage. The optimized composite exhibits an in-situ hydrogen storage capacity of 2.1 wt% at ambient temperature and pressure, with a markedly reduced desorption temperature of 216°C and excellent cycling durability. This work establishes an integrated paradigm of photocatalytic water splitting and low-pressure hydrogen storage, offering a feasible strategy to resolve the inherent H 2 /O 2 separation dilemma and advance the practical application of solar-driven hydrogen production.
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