INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Conghan Zhang,Jiating Cheng,Fan Yang,Yang Sun,Xinyang Sun,Kexin Wei,Guang Ma,Junpu An,Meitong Zhao,Jiahui Liu,Yongfeng Li
Electrolytic water splitting using transition metal sulfide catalysts has garnered a lot of attention lately. Herein, a composite material consisting of Mo-doped Ni 3 S 2 nanoparticles supported on N-doped carbon layers with anchored Ni single atoms (Mo–Ni 3 S 2 /Ni–N–C) was synthesized using a two-step hydrothermal process. These features enable Mo–Ni 3 S 2 /Ni–N–C to achieve low overpotentials of 71, 58, and 89 mV for the hydrogen evolution reaction (HER) at 10 mA cm −2 in 1 M KOH, 0.5 M H 2 SO 4 , and 1 M PBS, respectively. After 20 h of durability testing, its current density retains over 95 % of the initial value across diverse pH electrolytes. Mo doping enhances structural stability, enabling wide pH applicability. Electron transfer from Ni 3 S 2 nanoparticles to Ni single atoms accelerates kinetics and boosts intrinsic activity, which improves HER performance. Theoretical calculations confirm that Ni single atoms possess ideal H∗ adsorption energy, which optimizes H∗ adsorption capability of Ni 3 S 2 . This work offers suggestions for creating excellent low-cost electrolytic water catalysts.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Dai Xinxin,Yan Xinyuan,Wu Jianguang,Liu Yi,Deng Xiaolong,Huang Jinzhao,Li Yibing,Ji Yuexia
In this study, the electroactive Ni 3 S 2 /Ce 2 S 3 heterostructure (denoted as Ce–Ni(OH) 2 –S) was achieved by a facile one-step hydrothermal approach through the incorporation of Ce and sulfur into Ni(OH) 2 . The effect of Ni 3 S 2 /Ce 2 S 3 heterostructure on electrocatalytic water splitting is investigated in detail in 1.0 M KOH. The as-prepared Ce–Ni(OH) 2 –S exhibits long-term stability and excellent catalytic activity at a current density of 100 mA cm −2 with overpotentials of 327 mV and 356 mV for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. Serving as bifunctional catalysts, the Ce–Ni(OH) 2 –S electrode merely requires a 1.519 V cell voltage to reach 10 mA cm −2 . The synergistic effect of the metal sulfide heterojunction (composed of Ce and Ni) effectively facilitates reactant transfer and electron migration, thereby significantly enhancing the electrocatalytic activity. Furthermore, the catalytic performance is further enhanced with the overpotentials of 312 and 284 mV for OER and HER, respectively, by applying visible light irradiation. This work offers a new strategy for improving the electrocatalytic performance of water splitting under visible light irradiation condition.
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高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 8
·3090-3103
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IF 10.182
Changzhou Chen,Dichao Wu,Peng Liu,Jing Li,Haihong Xia,Minghao Zhou,Jianchun Jiang
Lignin is an abundant source of aromatics, and the depolymerization of lignin provides significant potential for producing high-value chemicals. Selective hydrogenolysis of the C–O ether bond in lignin is an important strategy for the production of fuels and chemical feedstocks. In our study, catalytic hydrogenolysis of lignin model compounds (β-O-4, α-O-4 and 4-O-5 model compounds) over Ni3S2-CS catalysts was investigated. Hence, an array of 2D carbon nanostructure Ni3S2-CSs-X-Y derived catalysts were produced using different compositions at different temperatures (X = 0 mg, 0.2 mg, 0.4 mg, 0.6 mg, and 0.8 mg; Y = 600 °C, 700 °C, 800 °C, and 900 °C) were prepared and applied for hydrogenolysis of lignin model compounds and depolymerization of alkaline lignin. The highest conversion of lignin model compounds (β-O-4 model compound) was up to 100% and the yield of the obtained corresponding ethylbenzene and phenol could achieve 92% and 86%, respectively, over the optimal Ni3S2-CSs-0.4-700 catalyst in iPrOH at 260 °C without external H2. The 2D carbon nanostructure catalysts performed a good dispersion on the surface of the carbon nanosheets, which facilitated the cleavage of the lignin ether bonds. The physicochemical characterization studies were carried out by means of XRD, SEM, TEM, H2-TPR, NH3-TPD, Raman and XPS analyses. Based on the optimal reaction conditions (260 °C, 4 h, 2.0 MPa N2), various model compounds (β-O-4, α-O-4 and 4-O-5 model compounds) could also be effectively hydrotreated to produce the corresponding aromatic products. Furthermore, the optimal Ni3S2-CSs-0.4-700 catalyst could be carried out in the next five consecutive cycle experiments with a slight decrease in the transformation of lignin model compounds.
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Journal of Environmental Chemical Engineering
·
2023
·Vol. 11
·期 6
·111477
·
IF 7.7
Siyi Zhou,Fang Zhu,Hao Cheng,Sridhar Komarneni,Jianfeng Ma
In this study, Ni 3 S 2 @Mo 2 S 3 composites were grown on the surface of molybdenum-nickel (Mo-Ni) foam in situ by a one-step hydrothermal method . With p-nitrophenol (PNP) as the target pollutant, the catalyst can produce a good synergistic effect with ozone, and the degradation rate of PNP is more than 96%. Even after five cycles, Ni 3 S 2 @Mo 2 S 3 -NF/O 3 was able to degrade PNP efficiently and stably. In addition, the unique three-dimensional structure of Ni 3 S 2 @Mo 2 S 3 -NF solves the separation and recycling problem of traditional powder catalysts by maintaining the structural stability during the use process and thus, may reduce the cost of water treatment. The degradation process is mainly dominated by non-radical pathways, and the radical pathway, which work synergistically. This work reveals the influencing factors and degradation mechanism of Ni 3 S 2 @Mo 2 S 3 -NF/O 3 system for PNP degradation, which provides a new idea for water treatment and broadens its potential application.
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Nano Energy
·
2017
·
IF 12.343
C. Yang,M.Y. Gao,Q.B. Zhang,J.R. Zeng,X.T. Li,A.P. Abbott
The exploitation of low-cost, stable, and highly active electrocatalysts based on earth-abundant metals for hydrogen evolution reaction (HER) is crucial for developing renewable energy techniques. In this work, we report a facile synthesis strategy for in-situ fabrication of 3D hierarchically porous Ni 3 S 2 films on a nanoporous copper substrate (Ni 3 S 2 @NPC) by unusual galvanic replacement reaction in the Ethaline-based deep eutectic solvent (DES) under a normal atmosphere. The self-supported nanoporous Ni 3 S 2 @NPC electrode is binder- free and exhibits good structural integrity with high conductivity. A mild evolution of bulk gas bubbles (H 2 -O 2 gas mixture) is proved to drive an in-situ structure rearrangement process of the Ni 3 S 2 @NPC and results in substantial increases in the HER activity. The activated Ni 3 S 2 @NPC (a-Ni 3 S 2 @NPC) electrode can serve as a highly efficient and stable electrocatalyst for the HER in water over a wide pH range. Significantly, it displays high-performance HER catalytic activity in acidic media with robust durability over 111 h and functions well under alkaline and neutral conditions. Such a superior catalytic performance of the a-Ni 3 S 2 @NPC is mainly due to the unique hierarchically nanoporous architectures and the synergetic effects in it caused by the restructuring NPC skeletons and active components. Our work offers a generic strategy for design and fabrication of many other self-supported transition metal sulfide and phosphide based HER electrocatalysts, and uncovers a new O 2 -induced electrochemical self-activation mechanism for improving the activity of catalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Shanpeng Li,Yuling Zhuo,Dong Liu,Hui Pan,Zhenbo Wang
Improving the Pt atoms utilization efficiency on self-supported electrodes is crucial for industrial seawater hydrogen production , but effective strategies are still lacking. Herein, we reported a novel strategy to anchor highly surface-exposed Pt single atoms on Ni 3 S 2 /Co 9 S 8 with abundant S vacancies (Pt–Ni 3 S 2 /Co 9 S 8 –Sv) as a self-supported electrode. Physical characterizations and theoretical calculations confirm that the strong Pt–S electron bridges with the coordinating role of surface S vacancies triggers the d -orbital electron rearrangements and regulates the local electron structures between the Co/Ni and Pt sites. Notably, the Pt–Ni 3 S 2 /Co 9 S 8 –Sv electrode displays an ultralow overpotential of 18 mV at 10 mA cm −2 in alkaline seawater . More importantly, our Pt–Ni 3 S 2 /Co 9 S 8 –Sv electrode assembled into an alkaline electrolysis cell can work continuously for 50 h under alkaline seawater @ 60 °C. This work provides a promising strategy for designing highly surface-exposed single-atomic catalyst for large-scale hydrogen evolution through seawater electrolysis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shan Xu,Dongxu Jiao,Xiaowen Ruan,Zhaoyong Jin,Yu Qiu,Jinchang Fan,Lei Zhang,Weitao Zheng,Xiaoqiang Cui
Efficient production of green hydrogen energy is crucial in addressing the energy crisis and environmental concerns. The oxygen evolution reaction (OER) poses a challenge in conventional overall water electrolysis due to its slow thermodynamically process. Urea oxidation reaction (UOR) offers an alternative anodic oxidation method that is highly efficient and cost-effective, with favorable thermodynamics and sustainability. Recently, there has been limited research on bifunctional catalysts that exhibit excellent activity for both OER and UOR reactions. In this study, we developed a selenium and iron co-doped nickel sulfide (SeFe-Ni 3 S 2 ) catalyst that demonstrated excellent Tafel slopes of 53.9 mV dec −1 and 16.4 mV dec −1 for OER and UOR, respectively. Density Functional Theory (DFT) calculations revealed that the introduction of metal (iron) and nonmetallic elements (selenium) was found to coordinate the d-band center, resulting in improved adsorption/desorption energies of the catalysts and reduced the overpotentials and limiting potentials for OER and UOR, respectively. This activity enhancement can be attributed to the altered electronic coordination structure after the introduction of selenium (Se) and iron (Fe), leading to an increase in the intrinsic activity of the catalyst. This work offers a new strategy for bifunctional catalysts for OER and UOR, presenting new possibilities for the future development of hydrogen production and novel energy conversion technologies. It contributes towards the urgent search for technologies that efficiently produce green hydrogen energy, providing potential solutions to mitigate the energy crisis and protect the environment.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Lei Wang,Jiao Yu,Wen Sun,Lida Wang,Zhengqing Yang,Guichang Liu
A major significance persists in the construction of cost-effective electrocatalysts possessing both outstanding activity and robust durability for water and urea electrolysis, which is essential for realizing energy-saving hydrogen evolution. However, it is still challenging to explore bifunctional electrocatalysts under ampere-level current density. Herein, we report the construction of a three-phase heterojunction electrocatalyst with bifunctional activity toward both hydrogen evolution reaction (HER) and urea oxidation reaction (UOR), achieved through the deliberate tuning of morphological features and electronic configurations. Through local bonding environment engineering at the heterointerface, the unique heterostructure effectively accelerates electron transfer and interfacial interactions, leading to significantly improved reaction kinetics and intrinsic electrocatalytic activity. Density functional theory (DFT) calculations reveal that the multi-heterostructure promotes electron migration and interfacial coupling via the concerted regulation of the electronic configuration, d-band center position, and density of states (DOS). These modifications collectively lower the chemisorption free energies of reaction intermediates, thereby accelerating the dissociation of both water and urea molecules. As a result, the heterojunction electrocatalyst exhibits ultralow potentials of −0.198 and 1.41 V to reach 1000 mA cm −2 for HER and UOR, respectively. Notably, when employed as a urea-assisted electrolyzer, the system achieves a cell voltage of 1.58 V at 500 mA cm −2 , which is 200 mV less than that required for conventional water electrolysis. Furthermore, the UOR-HER electrolyzer exhibits robust operational stability, sustaining 500 mA cm −2 for 100 h without significant degradation. Collectively, this study establishes a novel and practically viable route toward low-energy-consumption hydrogen production. A self-supported three-phase Ni₃S₂/MoS₂/Co₂P heterostructure nanoarray on nickel foam for efficient HER and UOR. Download: Download high-res image (136KB) Download: Download full-size image
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高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 7
·1-14
·
IF 2.4
Li Shunming,Hu Pengyu,Qu Jingzong,Zhou Jie,Wang Zibo,Wang Yanan,Sun Tao,Chen Anran
Hydrogen evolution reaction (HER) in alkaline media demands cost-effective and highly active electrocatalysts to replace noble metals. Herein, we report a ternary MoS₂/Ni₃S₂/Ni(OH)₂ nanoflower composite supported on nickel foam (NF) via a facile one-step electrodeposition strategy. This method enables precise control of MoS₂ morphology while mitigating aggregation-induced active site blockage. The synergistic interplay among MoS₂ (exposing edge sites), conductive Ni₃S₂, and Ni(OH)₂ (modulating electronic structure) significantly enhances HER kinetics. Notably, the optimal catalyst (5-min deposition) achieves ultralow overpotentials of 48 mV at 10 mA cm⁻² and 175 mV at 100 mA cm⁻² in 1.0 M KOH, surpassing most reported Ni- or Mo-based catalysts. Furthermore, it exhibits exceptional stability with negligible activity loss after 5000 cycles and 72-hour continuous operation. XPS analysis reveals that a high Mo⁴⁺/Mo⁶⁺ ratio facilitates electron delocalization, accelerating hydrogen intermediate desorption. This work establishes a new paradigm in HER catalyst design through interface-engineered ternary systems. By unifying electronic synergy theory with the SPRE synthesis method, we overcome the activity-stability trade-off plaguing binary catalysts. The demonstrated 500-hour stability at industrial current densities (100 mA cm⁻²) positions this approach as a transformative solution for scalable green hydrogen production. Graphical
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高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Fazal Badshah,Faiz mahmood,Dong-Yan Lu,Muhammad Afzaal,Muhammad Imran,Sabirov Sardor,Ruziyev Islambay Samandarovich
The cyclic life, rate performance, specific energy, and electrochemical sensing of electrode materials can be enhanced by tuning their nanostructures and compositions. Herein, the chemical vapor deposition technique was used to make direct deposition of MoS 2 nanosheets and Ni 3 S 2 /MoS 2 nanospheres on hierarchical nickel foam. The evaporated Ni 3 S 2 and MoS 2 achieved different energies, resulting in their different growth of diffraction planes with different peak intensities. The nanosheets and nanospheres were deposited successfully, which could render good surface area ∼50 m 2 g −1 , 128 m 2 g −1 , and pore ∼6.25 nm and 25 nm, respectively. The deposited MoS 2 and Ni 3 S 2 /MoS 2 electrodes provided a commendable capacitance of 1045 Fg −1 and 1828 Fg −1 at 1 Ag −1 , good cyclic life retaining 73% and 89% of their initial capacitance after 10,000 cycles with columbic efficiency of 85% and 98%. Besides, the asymmetric supercapacitor disclosed outstanding capacitance of 943 Fg −1 , specific energy of 297 Whkg −1 , with specific power of 2100 Wkg −1 at 3.5 Ag −1 and cyclic stability retaining 89.14% after 10,000 cycles at 35 Ag −1 . In electrolytic glucose oxidation, the Ni 3 S 2 /MoS 2 electrode also exhibited diffusion process contributions of ∼98–95% to the overall response at 5–30 mVs −1 , with surface process contributions of ∼2–5%.
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高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 39
·19201-19209
·
IF 9.931
Guoqiang Liu,Zhongti Sun,Xian Zhang,Haojie Wang,Guozhong Wang,Xiaojun Wu,Haimin Zhang,Huijun Zhao
Electrocatalytic water splitting has been widely accepted as an environmentally friendly approach to generate clean H2. However, the sluggish oxidation half reaction, namely, the oxygen evolution reaction (OER), usually requires a high overpotential, which is the obstacle to high-efficiency overall water splitting to generate H2. Herein, we report the preparation of ultrathin nanosheet array Ni3S2 with a 9–14 nm nanosheet thickness grown directly on a commercial Ni foam substrate (Ni3S2/NF) by in situ vapor-phase hydrothermal (VPH) transformation of the nanosheet array structure Ni(OH)2/NF precursor. As a multifunctional electrocatalyst, the as-fabricated Ni3S2/NF-2 (VPH time of 2 h) displays excellent electrocatalytic activities toward the hydrazine oxidation reaction (HzOR) with a potential of 0.415 V (vs. RHE) to deliver a current density of 100 mA cm−2, an OER with an overpotential of 425 mV obtaining the same current density, and a hydrogen evolution reaction (HER) with an onset potential of −0.05 V (vs. RHE) in 1.0 M KOH media. A two-electrode system is therefore constructed using Ni3S2/NF-2 as both the anode and cathode, capable of achieving 100 mA cm−2 at 0.867 V in 1.0 M KOH with 0.2 M hydrazine. Density functional theory (DFT) calculations reveal that the adsorption of N2H4 molecules on the Ni3S2 (110) is more thermodynamically favourable than H2O, thus contributing to the high HzOR activity.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Wenqing Lu,Ye Song,Meiling Dou,Jing Ji,Feng Wang
A hierarchically porous MoS 2 on Ni 3 S 2 nanorod array on Ni foam (MoS 2 /Ni 3 S 2 /NF) was firstly fabricated through a simple microwave-assisted hydrothermal method , and then followed by electrochemical deposition approach in which MoS 2 /Ni 3 S 2 /Ni foam is decorated with CoS (CoS MoS 2 /Ni 3 S 2 /NF). In contrast to conventional hydrothermal approach, microwave irradiation accelerates the synthesis of MoS 2 /Ni 3 S 2 /Ni foam from time of >20 h–2 h. The characterization of CoS MoS 2 /Ni 3 S 2 /NF by scanning electron microscope (SEM) and high resolution transmission electron microscope (HRTEM) indicate that a whole scale of 1D the Ni 3 S 2 nanorods were hierarchically integrated with MoS 2 and CoS nanosheets . The as-synthesized CoS MoS 2 /Ni 3 S 2 /NF hybrid not only endows the ease transport of electrons along Ni 3 S 2 nanorods to Ni foam, but also accommodates maximal exposure of active edge sites to the reactants through hierarchically porous CoS doped MoS 2 nanosheets , accomplishing the promoted kinetics and activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). By electrochemical measurements such as linear sweep voltammetry (LSV) and electrochemical impedance spectroscope (EIS), we find that the CoS MoS 2 /Ni 3 S 2 /NF hybrid shows markedly enhanced electrochemical performance for both HER and OER. Specifically, the optimal CoS MoS 2 /Ni 3 S 2 /NF 8C possesses the low overpotentials (η 10 ) of 85 and 225 mV at current density (|j|) of 10 mA cm −2 in 1.0 M KOH and the small 62.3 and 46.1 mV dec −1 Tafel slope for HER and OER, respectively, outperforming those of most of the current noble metal-free electrocatalysts . These results highlight the fact that CoS MoS 2 /Ni 3 S 2 /NF is a high-performance, noble-metal-free electro-catalyst, and provide a potential avenue toward achieving an enhanced electrocatalytic activity towards both in HER and OER. Yet the duration of the as prepared catalyst in OER still need to be improved.
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危险品化学品经营许可证（带存储）