ACS Applied Energy Materials
·
2022
·
IF 6.959
Yuping Che,Bingxin Lu,Huaxiang Chen,Jin Zhai,Kefeng Wang,Huaiqiu Chang,Zhaoyue Liu
Adding a cocatalyst to a semiconductor catalyst is often considered an effective measure to increase the efficiency of the photocatalytic hydrogen evolution reaction. Nowadays, noble metals are the state-of-the-art cocatalysts for the hydrogen evolution reaction. Due to their high cost and scarcity, it is imperative to develop cocatalysts prepared from cheap and abundant elements. Here, RuSe2 was used as an effective substitute for precious metal promoters such as Pt to enhance the efficiency of g-C3N4 for the hydrogen evolution reaction. A high efficiency of 13417.3 μmol·g–1·h–1 was obtained. It was 214 times higher than that of g-C3N4 and 2.8 times higher than that of 3%Pt/g-C3N4. Density functional theory calculations were performed. The (210) and (200) crystal faces of RuSe2 showed lower ΔGH* than Pt(111), indicating higher hydrogen evolution efficiency. Compared with the Pt cocatalyst, metallic RuSe2 cocatalysts exhibited superior performance. Meanwhile, the electrocatalytic activity was also investigated in an alkaline medium. It showed a decent electrocatalytic activity and high stability. These findings might provide a prototype to develop cheap and efficient cocatalysts for large-scale water splitting.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 35
·期 11
·115602
·
IF 3.5
Nan Li,Lanlan Huo,Qian Dong,Bin Zhu,Liangqi Huang,Jiangquan Ma
Constructing heterojunction to adjust the electronic structure of catalysts is a promising strategy for synergistically improving electrocatalytic activity. In addition, RuSe2 is recognized as an effective alternative to Pt for boosting alkaline hydrogen evolution reaction (HER) on account of its outstanding catalytic properties. Herein, novel RuSe2/CeO2 heterojunction electrocatalysts are fabricated through hydrothermal and thermal treatment methods. The optimal 50% RuSe2/CeO2 heterojunction electrocatalyst exhibits a low HER overpotential of 16 mV to attain 10 mA cm−2 current density and Tafel slope of 66.1 mV dec−1 for hydrogen evolution in 1.0 M KOH. At the same time, the 50% RuSe2/CeO2 heterojunction electrocatalyst also maintains a stable HER activity for 50 h or 3000 CV cycles. The experimental results show that formation of heterogeneous interface between RuSe2 and CeO2 results in the redistribution of electrons at the RuSe2/CeO2 interface, thereby changing the electronic structure of RuSe2 and enhancing the performance of the RuSe2/CeO2 electrocatalyst. This work may provide a feasible way to design efficient hydrogen evolution heterojunction electrocatalysts by modulating the electronic structure in alkaline electrolytes.
研究领域:
材料科学
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电化学
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2021
·
IF 4.094
Hualun Lv,Xudong Zhang,Jialin Cai,Xin Xie,Yunxiao Fan,Leyan Liu,Jie Ding,Qiang Cai,Yushan Liu
Generally, bi-functionalal electrocatalysts used for overall water splitting (OWS) have good hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performance. Herein, RuSe 2 /MoO x composite (RSMC) is constructed through a simple and convenient solid phase reaction (SPR) strategy, and is further studied as a potential electrocatalyst for OWS. At first, we prepared RuO 2 /MoSe 2 composite (RMC) precursor. When the RMC was heat-treated in a N 2 atmosphere, the SPR occurred between RuO 2 and MoSe 2 . Therefore, RMC was converted into RuSe 2 /MoO x composite (RSMC) in-situ , accompanied by the formation of oxygen vacancies (V O ) in the MoO x phase. In this work, the overpotential of RSMC-500 (prepared by annealing the RMC precursor at 500 °C in a N 2 atmosphere) at 10 mA cm −2 under alkaline conditions (1 M KOH) are 58 (HER) and 270 mV (OER), respectively. When using RSMC-500 as anode and cathode materials to make an electrolytic cell , a low cell voltage of 1.57 V is required under alkaline condition to achieve the current density of 10 mA cm −2 . The good performance shows the potential application of RSMC-500 in the field of renewable and clean energy area.
研究领域:
材料科学
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电化学
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可再生能源
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xu Lu,Ming Li,Keqiang Bo,Bin Zheng,Xu Hun
A photoelectrochemical (PEC) assay strategy for the detection of matrix metalloproteinase-9 (MMP-9) was fabricated. RuSe 2 /CuO nanohybrids were first prepared by hydrothermal method. As a transition metal element semiconductor, RuSe 2 has excellent optical and electrical properties. By combining the excellent conductivity and adjustable bandgap of CuO, a binary heterojunction nanoflower with high photoelectric response was obtained. The combination of RuSe 2 and CuO reduces the electron hole recombination rate; the RuSe 2 /CuO nanohybrids exhibits a higher photocurrent response. In the MMP-9 PEC strategy determination, the magnetic beads (MB)-peptide-alkaline phosphatase (ALP) recognition probe was formed by modifying C-terminal of the peptide chain with biotin and binding to ALP, and the N-terminal was connected to carboxylated MB. When the target MMP-9 exists, the recognition probe, MB-Peptide-ALP, was recognized by MMP-9 to cut the substrate area and coding area and release ALP, catalyzing the hydrolysis of O-phosphonoxyphenol (OPP) to produce benzene-1,2-diol in situ, the photocurrent response was generated. This strategy provides lower background PEC noise for detecting MMP-9, with the advantage of simplicity and the sensitivity than conventional ELISA. The results showed that the recognition peptide probe PEC method achieved ultra-high sensitivity detection of target MMP-9, with a linear detection range of 1 pg/mL–100 ng/mL and a detection limit of 0.3 pg/mL (S/N = 3). The results of PEC assay strategy in human serum sample give the recoveries rate of 94.3 % to 108.1 % and relative standard deviation of 0.45–5.87 %.
研究领域:
纳米技术
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生物化学
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分析化学
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医学诊断
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2023
·Vol. 25
·期 6
·981-987
·
IF 3.1
Nan Li,Minghao Shi,Wei Zhan,Wenjing Shen,Mianmian Wu,Guifang Sun,Qingfei Li,Jiangquan Ma
Ru-based catalysts are potential substitutes for Pt in the hydrogen evolution reaction (HER). It is worth noting that the Se ions in RuSe2 can modulate the electronic structure of the Ru metal, thus effectively improving the HER kinetics of RuSe2. However, single electronic structure modulation is hard to complete due to the electron deficiency of active Ru atoms. Herein, we prepare and design a novel RuSe2/Co–N–C (RuSe2 nanospheres supported on Co–N–C nanosheets) electrocatalyst with two-electron modulation by a hydrothermal and thermal annealing method. Benefiting from the uniform distribution of RuSe2 nanospheres on Co–N–C nanosheets and Co–N–C nanosheets acting as additional electron donors to make up for the electron deficiency of the Ru metal, RuSe2/Co–N–C exhibits excellent HER performance with a low overpotential of 26.4 mV at 10 mA cm−2 and a low Tafel slope of 53.2 mV dec−1. This work offers an effective method for the synthesis of high catalytic performance electrocatalysts by constructing an interaction between the carrier and the active metal.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 24
·期 3
·620-627
·
IF 3.545
Wei Zhan,Nan Li,Shixiang Zuo,Zhimin Guo,Chenghong Qiang,Zhengping Li,Jiangquan Ma
The rational design and synthesis of electrocatalysts for hydrogen evolution reaction (HER) remain great challenges. Herein, cubic RuSe2 (c-RuSe2) electrocatalysts with different 1T phase ratios (ranging from 20.53% to 64.97%) and crystallinities (ranging from 1.72% to 89.10%) were developed by a fast and efficient microwave-assisted synthesis method. Remarkably, the c-RuSe2 calcined at 500 °C (RuSe2-500) with 45.46% 1T phase and 86.75% crystallinity exhibited a small overpotential of 29 mV at 10 mA cm−2 and a Tafel slope of 64 mV dec−1, close to the commercial Pt/C (31 mV, 53 mV dec−1) and better than most of the reported materials. The enhanced performance of RuSe2-500 could be attributed to the crystallinity, and the 1T phase content reached a certain equilibrium at 500 °C. Moreover, RuSe2-500 had the smallest charge transfer resistance, mainly due to its abundant active centers and excellent conductivity brought by the 1T phase, which were in favor of the HER kinetics and catalytic performance. This study explored the relationship between the ratio of the 1T phase and crystallinity in c-RuSe2, and gives a new pathway to improve the activity by synergistic regulation.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Fengyue Sun,Wenjing Bao,Chao Feng,Jiahui Bi,Changle Yue,Cong Zhang,Na Liu,Haoyuan Hao,Yukun Lu
The rational design and controllable construction of efficient and stable electrocatalysts is an inevitable trend in sustainable hydrogen production. The transition metal selenides play an important role in the highly active hydrogen evolution reaction (HER) electrocatalysts. Herein, we put forward an “atom-to-cluster” strategy assisted by lacunary polyoxometalates (POMs) to successfully prepare highly dispersed RuSe 2 -WO x @HMCS electrocatalyst. The vacancy-directed effect of lacunary [PW 9 O 34 ] 9− (PW 9 ) was utilized to anchor Ru via coordination bonds and achieve uniform dispersion of Ru at the atomic level. The uniform dispersion of the precursor Ru x [PW 9 O 34 ] (Ru x PW 9 ) at the molecular level was achieved by confining Ru x PW 9 within the mesopores of hollow mesoporous carbon spheres (HMCS). Ultrafine (≈2 nm) and highly dispersed RuSe 2 on WO x was successfully produced at the cluster level by using in situ selenization. Corresponding theoretical calculations demonstrate that the secondary support WO x in combination with RuSe 2 has the synergistic effect in electrocatalytic HER, responding to the significance of trivacant PW 9 . Meanwhile, the conductive support HMCS could promote the exposure of active sites and accelerate electron transfer . Consequently, RuSe 2 -WO x @HMCS exhibited excellent HER activity with overpotentials of only 58 mV and 60 mV at a current density of 10 mA∙cm −2 in 0.5 M H 2 SO 4 and 1 M KOH solutions, respectively. This study provides a feasible “atom-to-cluster” strategy derived from POMs for the modulation and fabrication of low-cost and high-quality HER electrocatalysts.
研究领域:
材料科学
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电化学
·
催化科学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2026
·Vol. 56
·期 8
·150
·
IF 3.7
Ji Shiyu,Yang Kaihe,Guo Xiaoyuan,Zhao Shiqin,Zhang Ao,Xu Chenxuan
Ru-based catalysts represent promising Pt alternatives due to their decent hydrogen adsorption energy and cost advantages. However, their practical application is hindered by sluggish hydrogen evolution reaction (HER) kinetics and insufficient active site exposure in alkaline media. Herein, this work innovatively developed rapid solventless microwave heating method to synthesize small-size ruthenium selenide (RuSe 2 ) nanoparticles loaded on the carbon nanotube (CNT) surface. This microwave reaction accomplishes ultrafast transformation (100 s) to generate RuSe 2 nanoparticles (~ 3 nm in diameter), representing one of the fastest synthetic routes for transition metal selenides. By benchmarking the HER activity, RuSe 2 @CNT exhibits excellent activity in 1.0 M KOH, requiring an overpotential of 26 mV to achieve 10 mA cm − 2 , which is better than Ru@CNT (63 mV) and the commercial Pt/C (33 mV). Moreover, RuSe 2 @CNT exhibits outstanding HER activity with an overpotential of merely 66 mV at 10 mA cm − 2 , while demonstrating remarkable stability in natural alkaline seawater media. The demonstrated microwave selenization mechanism opens new possibilities for engineering ultrafine metal chalcogenides for marine energy applications.
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产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Junfeng Qin,Qinghui Shen,Cuicui Du,Min Hong,Yixin Yang,Xiaohua Zhang,Jinhua Chen
Heteroatom doping and vacancy engineering play vital roles in designing a high-activity electrocatalyst . Herein, we proposed a novel enriched Se vacancies engineering of the promising ruthenium chalcogenide of RuSe 2 induced by low-valence Cu doping for promoting hydrogen evolution reaction (HER) electrocatalysis in alkaline media. The Cu-doped RuSe 2 with enriched Se vacancies supported on graphitized carbon (Cu-RuSe 2 @C) was synthesized by a simple one-step selenization of bimetallic MOF precursor of Ru/Cu-BTC (1,3,5-benzenetricarboxylic acid) polyhedra. Compared to the Cu(Ⅱ)-dominant doped RuSe 2 (Cu Ⅱ/Ⅰ -RuSe 2 @C) with deficient Se vacancies, the proposed Cu(Ⅰ)-dominant doped RuSe 2 (Cu Ⅰ/Ⅱ -RuSe 2 @C) with enriched Se vacancies exhibited significantly improved electrocatalytic activity, which was potentially derived from the created electron-deficient Ru δ+ and Se ν− sites induced by low-valence Cu doping. Specifically, Cu Ⅰ/Ⅱ -RuSe 2 @C needed only 40 mV overpotential to drive a HER current density of 10 mA cm −2 , comparable to commercial Pt/C (38 mV) and much lower than those of Cu Ⅱ/Ⅰ -RuSe 2 @C (93 mV) and RuSe 2 @C (362 mV). Furthermore, an alkaline Zn-H 2 O fuel cell with a Cu Ⅰ/Ⅱ -RuSe 2 @C cathode was integrated to demonstrate its potential applications, which delivered a maximum power density of 15.1 mW cm −2 and specific capacitance of 660 mAh g −1 with good stability. Two series-connected alkaline Zn-H 2 O cells acted as a chemical energy converter for simultaneous electricity generation and hydrogen coproduction by driving the coupled water splitting.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xinyu Zhu,Minghao Fang,Muqing Han,Shujie Yang,Yanghong Li,Meiling Zhan,Bozhi Yang,Shaorou Ke,Xin Li,Xin Min
Addressing the inherent activity-stability trade-off and industrial application bottlenecks of ruthenium-based oxygen evolution reaction (OER) catalysts, this study proposes a novel microwave-field-induced strategy coupling in-situ foaming and selenization of a metal–organic framework (ZIF-67). This approach successfully synthesizes a composite catalyst comprising cobalt-doped ruthenium selenide supported on nitrogen-doped porous carbon (Co-RuSe 2 /N-C). Leveraging the synergistic effect of microwave dielectric heating and the pyrolysis-induced foaming of Ru-ZIF-67, the strategy achieves the in-situ construction of a three-dimensional porous carbon skeleton and the precise anchoring of highly dispersed RuSe 2 nanocrystals. Combined experimental characterization and theoretical calculations reveal the strong electronic synergy between cobalt dopant sites and the pyrite phase of RuSe 2 modulates interfacial electron rearrangement, optimizes the adsorption free energy of reaction intermediates, and significantly enhances catalytic reaction kinetics. The resulting catalyst exhibits breakthrough performance: its OER mass activity surpasses that of commercial IrO 2 by 26.2 times and maintains well performance with overpotential increases of merely 22.4 mV after 3000 cycles, which provides a new paradigm for developing efficient, stable, and low-cost practical electrocatalysts.
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产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 1
·1-9
·
IF 20.1
Du Peng,Lin Chaoliang,He Xian,Zheng Zhichuan,Xie Xinyu,Huang Kai,Lei Ming,Tang Haolin
Developing relatively cost-effective and high-performance Ru-based composites as electrocatalysts for acidic oxygen evolution has become the critical step toward emerging renewable energy conversion, in which exploring controllable synthetic strategies and investigating the intrinsic nature by non-metallic interfacial modulation is highly desirable. In this work, a facile tandem process is proposed by ball-milling and thermal annealing for the scalable synthesis of Ru–O–Se nanocomposites with in-situ formed crystalline RuSe 2 and metallic Ru heterostructures on a RuO 2 substrate. The optimized RuO x Se y -800 sample has been proved to have an excellent OER activity and long-term stability in an acidic electrolyte due to its suitable microscopic morphology and phase composition, along with a relatively smaller Tafel slope of 45.4 mV dec −1 compared with commercial RuO 2 and most similar catalysts reported in the literature. The outstanding acidic OER performance can be ascribed to the enhanced electron transfer and more active site exposure by controllable selenization. This work paves a novel way for the design and large-scale production of various non-metallic modified composite catalysts for extensive applications of energy conversion and storage.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）