EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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2020
·Vol. 2020
·期 36
·3466-3473
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IF 2.529
Yongcen Lin,Xue Dong,Lang Zhao
Graphical In this paper, a highly efficient nano-catalyst was synthesized using thiosalicylic acid modified ZIF-(1:2.5) as precursor, which was used to catalyze the reduction of 4-nitrophenol, methyl orange, methylene blue, and congo red. The catalyst shows excellent performance. Mesoporous catalyst S-ZIF-(1:2.5)@Ni x S y was prepared using ZIF-(1:2.5) as a precursor. These composite materials were characterized by using scanning microscope (SEM), transmission electron microscopy(TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and N 2 adsorption-desorption techniques, and studied as catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), congo red (CR), methyl orange (MO), and methylene blue (MB). The BET specific surface area and pore volume of the catalyst were 167.49 m 2 /g and 0.32 m 3 /g respectively. The doping of S improves the catalytic performance of the catalyst. S-ZIF-(1:2.5)@Ni x S y showed an excellent catalytic rate ( k app = 22.3 × 10 –3 /s) in the experiment of reductive degradation of 4-NP. In addition, S-ZIF-(1:2.5)@Ni x S y also showed good catalytic activity for the degradation of CR, MB, and MO, completing the catalytic reaction within 60, 60, and 90 s, respectively. The k app values for CR, MB, and MO are 29.0 × 10 –3 /s, 44.0.0 × 10 –3 /s, and 29.2 × 10 –3 /s, respectively.
研究领域:
材料科学
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催化化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
·
IF 3.2
Lulan Wang,Hua Yang,Linhua Wang,Xu Sun,Lingfeng Gao,Yunwu Li,Jianmin Dou
The development of low-cost, earth-abundant electrocatalysts for oxygen evolution reactions (OER) is of vital significance to alleviate the energy shortage, but it still faces challenges due to the sluggish kinetics of the four-electron transfer process. We synthesized and characterized a series of FeOOH-decorated hollow-cubic Ni x S y electrocatalysts (Ni x S y /FeOOH) with the morphology maintained after the sulfuration treatment and Fe dip-coating. The stoichiometric ratios, heating temperatures, and Fe inputs can affect the morphology and catalytic activity. The as-prepared optimum Ni x S y /FeOOH electrocatalyst exhibited the lowest OER overpotential (250 mV) at 20 mA cm −2 and Tafel slope (53.07 mV dec −1 ) in 1.0 M KOH and maintained long-term stability and good durability. The outstanding OER performance is likely attributed to the synergistic interaction and electron transfer between FeOOH and Ni x S y species. Therefore, the present work provides a promising route for the design and synthesis of stable and efficient OER electrocatalysts.
研究领域:
电化学
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材料科学
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能源材料
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Keying Cui,Lange Du,Weimin Du,Weiling Chen,Yufan Zhang,Lili Cui,Dapeng Wu
CoTe@NixSy core-shell nanowires are designed and grown on cobalt foams via hydrothermal and electrodeposition method. Structural characterizations indicate the tightly coating of NixSy nanosheets around CoTe nanowires forms the novel core-shell nanowires. Benefiting from this structural engineering design, CoTe@NixSy core-shell nanowires supported by cobalt foams deliver the high areal specific capacitance of 7.56 F cm −2 at 3 mA cm −2 and retention rate of 81.3% after experiencing 5000 cycles. It needs to be specially mentioned that CoTe@NixSy core-shell nanowires were functionally applied in aqueous/flexible hybrid supercapacitors with activated carbon as the negative materials. The aqueous hybrid devices exhibit a maximum areal energy density of 0.77 mWh cm −2 at 2.52 mW cm −2 and retention rate of 81.9% after 5000 cycles. Meanwhile, the flexible hybrid devices show superior energy-storage performance, such as high volume energy density of 3.95 mWh cm −3 at 22.64 mW cm −3 , improved cycle stability (82.1% after experiencing5000 cycles), and remarkable flexibility. This work not only demonstrates CoTe@NixSy core-shell nanowires as the promising candidate of energy-storage device; but also provides a novel strategy for high-performance electroactive materials.
研究领域:
材料科学
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能源存储技术
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结构工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
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2025
·
IF 2.5
Zhiyuan Chen,Ling Wang,He Lu,Haoyong Yin,Shengji Wu
A portable and highly sensitive electrochemical sensor for nitrite detection was developed using a NixSy/Ni/N-doped carbon nanotube (N-CNT) nanocomposite. The hybrid was fabricated by in situ growth of Ni nanoparticles on MOF-derived N-CNTs followed by hydrothermal sulfidation to form NixSy. This hierarchical nanostructure provided abundant active sites, large surface area, and enhanced conductivity. Electrochemical studies revealed outstanding nitrite sensing performance, with a wide linear range (0.2 μM–22 mM), high sensitivity (163.77 μA mM−1 cm−2), and a low detection limit (0.2 μM). The sensor showed excellent selectivity, reproducibility, and stability. Real sample analyses, including water, beverages, and pickled brine, yielded recoveries of 98.71–103.87% with low RSDs. A smartphone-integrated portable sensing system was also demonstrated, enabling accurate on-site nitrite monitoring. This work offers an effective strategy for designing advanced, field-deployable electrochemical sensors for food safety and environmental analysis.
研究领域:
分析化学
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环境监测
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食品安全
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纳米生物技术
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电分析化学
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现场检测
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2019
·
IF 5.155
Ya Wang,Zhiqiang Fang,Qingsong Dong,Yiyue Chu,Xiaoyu Shi,Mingxing Song,Zhaomin Hao
Nickel sulfides have been considered to be among the most effective oxygen evolution reaction (OER) electrocatalysts . Until now, there are many different nickel sulfides, such as Ni 3 S 2 , NiS, Ni 3 S 4 , NiS 2 , etc. In this paper, we set out to explore the influence of the S:Ni ratio in raw materials on the different nickel sulfides. With the characterizations of XRD , XPS , SEM, TEM and BET, the relevance between the molar ratio of S:Ni in raw materials and stoichiometric ratio, microscopic structure and OER performance are discussed. According to the results of the experiments, the Ni 3 S 4 derived from the 3:1 M ratio of S:Ni in raw material exhibits the smallest overpotential (245 and 314 mV to achieve 10 and 20 mA/cm 2 ) and Tafel slope (81.5 mV/dec). Meanwhile, theoretical calculation of ΔG(H 2 O*) indicate that the adsorption energy in Ni 3 S 4 is much closer to the IrO 2 than other nickel sulfides, which are in good agreement with the OER performance of electrochemical measurements.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 13
·1706917
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IF 13.325
Haiyuan Zou,Bowen He,Panyong Kuang,Jiaguo Yu,Ke Fan
Solar-to-hydrogen (STH) conversion through unassisted artificial photosynthesis (APS) devices is one of the promising and environmentally friendly strategies for sustainable development. However, the practical large-scale application of the unassisted APS devices is impeded by the need for expensive noble metal-based catalysts in photovoltaics and/or electrolyzers. Herein, well-aligned 2D Ni x S y nanowalls (2D Ni x S y NWs) on a 3D nitrogen-doped graphene foam (3D NGF) are synthesized and further employed it in unassisted APS. Due to the positive synergistic effect between the highly electrocatalytic activity of Ni x S y NW and excellent conductivity of NGF, this low cost material of (2D/3D) Ni x S y NW/NGF is highly efficient as a multifunctional catalyst in various applications: a counterelectrode for dye-sensitized solar cell (DSSC) and a “bifunctional” electrocatalyst for oxygen and hydrogen evolution for electrocatalytic overall water splitting. Furthermore, three Ni x S y NW/NGF-based DSSCs as a tandem cell for unassisted solar-driven overall water splitting is connected, using Ni x S y NW/NGF itself on nickel foams as the anode and cathode. Impressively, such integrated photovoltaic-electrolyzer APS device can achieve an STH efficiency of 3.2% with an excellent stability and low cost. This work opens an avenue to advanced multifunctional materials for the low-cost and unassisted solar-driven overall water splitting.
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DOI
高影响因子
SOLID STATE SCIENCES
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2025
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IF 3.3
Tuo Ping,Dashuang Wang,Can Wang,Xiaobin Gong,Zhilan Du,Xinfang Zhang,Yuxin Zhang
Scalable synthesis of hierarchical architectures with targeted interface engineering enables dual-functional materials for efficient microwave absorption and oxygen evolution reaction (OER). A bio-template-directed sulfurization strategy constructs Ni x S y @diatomite core-shell hybrids. Sulfur-modulated interfaces enhance both electromagnetic dissipation and electrocatalytic kinetics. The porous diatomite/Ni-S gradient structure achieves ideal impedance matching and multi-phase polarization, yielding outstanding microwave absorption: 93.5 dB minimum reflection loss at 15.86 GHz and an ultra-wide 6.66 GHz bandwidth (covering C/Ku bands). Moreover, it exhibits superior OER performance with a low overpotential (258 mV@10 mA cm −2 ) and Tafel slope of 82.62 mV dec −1 in alkaline solution, outperforming the commercial RuO 2 . High electrochemical surface area further supports enhanced kinetics. Crucially, bio-inspired design ensures thermodynamic stability (<1 % mass loss, 20–400 °C) and durability for high performance of microwave adsorption, also bionic architecture improves the active sites density of the electrode to enhance water splitting. This work bridges scalable synthesis, interfacial optimization, and dual functionality for next-generation electromagnetic protection and energy conversion systems.
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Qing-Lin Liu,Yu-Jie Dong,Yang Cao,Hong-Yan Chen,Dai-Bin Kuang,Cheng-Yong Su
Ni x S y /NiSe 2 hybrid nanoparticle film grown in situ on F-doped SnO 2 (FTO) glass is synthesized by a gentle solvothermal method and used as efficient counter electrode for dye-sensitized solar cells (DSSCs). The two-step strategy involving sulfuration and subsequent selenization reaction using nickel hydroxide as the precursor can effectively avoid the film cracking and detaching thus to obtain a uniform hybrid nanoparticle film with rich catalytic active sites and good electron transport ability. The electrocatalytic activity of hybrid catalyst compared with single NiSe 2 and Ni x S y is investigated in detail by cyclic voltammetry (CV), electrochemical impedance spectra (EIS) and Tafel polarization measurements. Due to the synergistic effect of different components, the hybrid Ni x S y /NiSe 2 exhibits higher electrocatalytic performance for I 3 − reduction. As a result, the DSSCs with Ni x S y /NiSe 2 hybrid electrode shows an impressive higher short circuit photocurrent and power conversion efficiency (8.64%) than that with Ni x S y (7.95%) and NiSe 2 (7.47%) counter electrodes, just a little bit inferior to Pt (9.01%), which indicates that this new kind of material can work as a promising alternative low-cost catalyst for DSSCs or other electrocatalytic applications.
研究领域:
材料科学
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可再生能源
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电化学
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纳米材料
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太阳能电池
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Panpan Sun,Taian Huang,Ziyu Chen,Liangyu Tian,Huihui Huang,Niu Huang,Sha Zhou,Min Long,Yihua Sun,Xiaohua Sun
The design and facile fabrication of highly efficient, cost-effective and earth abundant counter electrode material on an electrode surface is highly desirable for the application of dye-sensitized solar cells (DSSCs). Herein, using a N,N-dimethylformamide based solution process, transition metal chalcogenide Ni x S y films have been obtained by spin-coating a NiCl 2 -thiourea (Ni-Tu) solution combining mild thermal treatment. XRD, SEM and TEM characterizations reveal that the current procedure allows for phase composition (Ni 3 S 2 , NiS and NiS-NiS 2 ), crystallinity , morphology (film uniformity and compactness) control of the films through simple adjusting Ni/S ratio in the precursor solution. Electrochemical analysis indicates that the FTO supported Ni 3 S 2 and NiS films exhibit excellent electrocatalytic activity toward the reduction of triiodide, resulting in higher photo-electric conversion efficiencies of 6.86% and 6.95% when used as counter electrode in DSSCs, versus 6.66% for Pt. In particular, even without the support of conductive FTO layer, Hall effect measurements and electrocatalytic analysis reveal that pristine Ni x S y films exhibit good electrical conductivity and electrocatalytic activity, yielding a highest photo-electric conversion efficiency of 4.41% when used as counter electrode in DSSCs. Our study thus provides a facile procedure which allows for composition, morphology optimization and high performance for low-cost, large-scale DSSC application.
研究领域:
材料科学
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能源科学
✓ 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）