ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Shuyan Guan,Lulu An,Yumei Chen,Xianyun Liu,Jianchao Shi,Yulong Sun,Yanping Fan,Baozhong Liu
Highly active and stable non-noble metal catalysts are expected to play a critical role in future hydrogen storage and conversion applications. The design of active sites with composite oxides provides a new approach for developing high-performance catalysts. In this study, an Fe-doped Ni/NiO nanocomposite film was constructed on an ionic liquid/water interface to promote hydrogen generation. The optimized Ni/FeNiOx-25 catalyst showed excellent catalytic activity toward ammonia borane hydrolysis, with a turnover frequency of 72.3 min–1. The enhancing effect of Fe2+ doping on Ni/NiO films was confirmed by the improved intrinsic activity and theoretical simulations. Fe ion doping stabilized NiO and prevented NiO from becoming Ni. The interfacial Ni–Fe2+ dual active sites on the FeNiOx and Ni interfaces participated in the targeted adsorption and effective activation of water and NH3BH3 molecules, respectively. The sufficiently exposed plane surface of the nanofilms provided abundant active sites for catalytic reactions. This significant advance will inspire development in the ambient liquid hydrogen storage field.
研究领域:
材料科学
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催化化学
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DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Zhenwei Liu,Ying Li,Yushi Ding,Wenlong Huang,Yunlong Hao,Tianlong Wang,Wei Zhang,Chunsheng Zhuang
The demand for cost-effective and green hydrogen (H 2 ) has driven the development of high-performance, low-cost oxygen evolution reaction (OER) electrocatalysts. Herein, we combine electrodeposition and in-situ electrochemical oxidation to fabricate a novel and low-cost NiOOH/NiO composite structure supported on nickel foam (denoted as NiOOH/NiO(O v )/NF), featuring a nanosphere structure with oxygen vacancies. The optimized catalyst exhibits an exceptionally low overpotential of 220/290 mV at 20/100 mA cm −2 without iR correction and is remarkably stable for at least 120 h at 100 mA cm −2 in 1 M KOH. Density functional theory (DFT) calculations reveal that oxygen vacancies in NiO narrow the bandgap, enhance conductivity, reduce intermediate adsorption energy, and accelerate charge transfer through spin polarization, thereby improving OER intrinsic activity. The synergistic coupling of oxygen-deficient NiO with highly active NiOOH species significantly enhances OER performance, while the superhydrophilic/aerophobic surface facilitates rapid bubble detachment and electrolyte contact. This work provides a cost-effective alternative to noble-metal catalysts, demonstrating promising potential for scalable green hydrogen production via water splitting.
研究领域:
材料科学
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电化学
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能源化学
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纳米科技
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催化化学
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可持续能源
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表面科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Liru Zeng,Zeyulin Zhang,Dinghe Liu,Zhuangjie Xu,Dazheng Chen,Yue Peng,Qian Feng,Yachao Zhang,Jincheng Zhang,Chunfu Zhang,Yue Hao
The interfacial configuration in oxide heteroepitaxy plays a critical role in determining the structural integrity and reliable performance of wide-bandgap heterostructures. Herein, we investigate the orientation-dependent epitaxial growth of high-quality NiO films on β-Ga 2 O 3 via mist chemical vapor deposition (Mist-CVD), exhibiting distinct epitaxial domain configurations depending on the substrate orientation. Combined experimental and density functional theory (DFT) analyses reveal that the synergistic interplay among surface energy, lattice mismatch, and crystal symmetry governs the epitaxial mode and crystalline quality across different substrate orientations. Benefiting from the high-quality epitaxy, the NiO films demonstrate good environmental stability, retaining 94% of their initial current after 30 days of ambient exposure. As a functional demonstration, the NiO/(001) β-Ga 2 O 3 p-n diode exhibits a low leakage current density (2.08 ×10 −8 A·cm −2 @-100 V) and a high breakdown voltage of 885 V, highlighting the critical role of epitaxial interface quality. This study provides mechanistic insight into orientation-regulated oxide heteroepitaxy and offers a viable materials strategy for constructing stable wide-bandgap oxide heterostructures.
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2026
·
IF 6.2
Xiaowen Zhang,Qi Lei,Lixiang Wang,Qingge Feng,Qihua Liang
Xylene poses a threat to environmental and public health due to its neurotoxicity and strong irritancy, necessitating the development of efficient trace detection technologies. However, existing metal oxide semiconductor-based xylene sensors tend to have drawbacks such as high detection limits, insufficient response, poor humidity resistance, and susceptibility to cross-interference from aromatic compounds. In this study, Mo-doped nickel oxide nanofibers with varying doping ratios were fabricated by combining a facile electrospinning process with thermal treatment, and their gas-sensing properties were systematically evaluated. The results demonstrate that the sensor with a Mo doping concentration of 12.5 at% exhibited the maximum response to 20 ppm xylene at 265 °C (S ≈ 120.9), an ultra-low detection limit of 20 ppb, excellent selectivity, outstanding humidity resistance, and long-term stability. The improvement in sensing performance primarily stems from the modulation of valence state distribution in nickel oxide by aliovalent molybdenum doping. This process improves charge transfer efficiency and increases oxygen vacancy concentration. Additionally, the incorporation of Mo significantly enlarges the specific surface area and increases the quantity of micropores and mesopores. These factors collectively optimize the activity of surface chemisorbed oxygen, thereby markedly improving gas-sensing reaction efficiency. In situ Fourier transform infrared analysis reveals the surface oxidation reaction process and final reaction products of xylene. This work provides a feasible material strategy for developing high-performance xylene gas sensors, demonstrating promising potential for applications in trace xylene detection.
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DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
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2026
·
IF 3.9
JIANG Xi,PANG Yunji,ZHANG Tiejun
This study prepared a biochar-supported nickel oxide (NiO/BC) catalyst for the microwave-catalyzed degradation of gaseous phenol, aiming to investigate the degradation mechanism and pathway regulation. By optimizing preparation and reaction parameters, it was found that at a Ni loading of 6 wt% and a microwave power of 480 W, the gas-phase products accounted for 98.6% of the total products, with optimal selectivity for H₂ and CO in the syngas. Characterization results indicated that NiO was in-situ reduced to metallic Ni nanoparticles during the reaction, forming the key catalytically active centers that synergistically catalyzed cracking and hydrogenation reactions. This process primarily converted phenol into syngas (H₂ + CO) and long-chain alkanes (tetradecane). The study further revealed that excessively high microwave power caused the sintering of Ni particles, resulting in catalyst deactivation. This research elucidates the dynamic evolution of the catalyst under microwave irradiation and the directed conversion mechanism of phenol, providing a scientific basis for developing efficient and stable microwave-catalyzed technologies for the resource treatment of organic pollutants.
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产品关联
DOI
高影响因子
RSC Advances
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2015
·Vol. 5
·期 112
·92128-92133
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IF 3.84
Chaoxin Yuan,Hairong Li,Longzhen Xie,Fang Wang,Heng Deng,Fangzhi Chang,Yongzhe Sun
Nickel oxide (NiO) flower-like hierarchical nanostructures were obtained by electrodeposition and oxidation methods. The surface morphology and structure of the fabricated NiO were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The gas sensing characteristics toward toluene gas are investigated. The sensors based on this nanostructures exhibit a high response to 5 parts-per-million (ppm) of toluene (ratio of resistance to gas and air = 2.63) under an operating temperature of 250 °C. Furthermore, the response and recovery time to 2 ppm can reach 13.6 s and 24.5 s, respectively. The results indicate that the flower-like nanostructure is a potential candidate for gas sensors with good performances for practical applications.
研究领域:
材料科学
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纳米技术
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气体传感器
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环境监测
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DOI
高影响因子
Nano Energy
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2015
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IF 10.325
Kun Cao,Zhixiang Zuo,Jin Cui,Yan Shen,Thomas Moehl,Shaik M. Zakeeruddin,Michael Grätzel,Mingkui Wang
We present efficient perovskite solar cells using a mesoscopic TiO 2 /Al 2 O 3 /NiO/carbon structure as framework. The CH 3 NH 3 PbI 3 -based device with quadruple-layer architecture achieves a power conversion efficiency of 15.03% under AM 1.5G illumination. Detailed investigations show an increased charge collection and reduced charge recombination in this device structure compared to that without NiO interlayer. It is found that these perovskite solar cells exhibit good stability both in dark and under illumination.
研究领域:
光伏技术
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材料科学
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可再生能源
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纳米技术
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DOI
高影响因子
SOLAR ENERGY
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2017
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IF 4.018
Shuangshuang Liu,Kun Cao,Hao Li,Jinkui Song,Junbo Han,Yan Shen,Mingkui Wang
In this research work, for the first time, we introduced thin composite films (∼1.8 μm) made with NiO nanoparticles and single-walled carbon nanotubes (SWCNT) as alternatives to replace the commonly used carbon black/graphite counter electrode in full printable organic hole-transport layer free mesoporous perovskite solar cells. Due to the relative thick carbon black/graphite counter electrodes, which are typically ∼10 μm thick, charge collection and batch to batch reproducibility of this type devices are significantly limited. We find an appreciated power conversion efficiency of 12.7% can be achieved for the CH 3 NH 3 PbI 3 perovskite solar cell using mesoscopic TiO 2 /Al 2 O 3 framework structure in combination with a thin NiO/SWCNT counter electrode under standard reporting conditions. Electronic impedance spectroscopy measurements reveal efficient charge collection ability for perovskite devices using thin NiO/SWCNT counter electrodes compared to the conventional carbon black/graphite counter electrode, and thus can efficiently deliver photocurrent.
研究领域:
光伏技术
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材料科学
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纳米技术
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可再生能源
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太阳能电池
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
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IF 6.364
Haibo Jiang,Xin Ren,Xuebin Lao,Anting Kong,Meilian Zhong,Yan Sun,Yucong Wu,Zheng Yao,Liyi Shi
The effects of NiO content on the grain growth and the electrical properties of the ZnO varistors were studied. The effect on the grain growth was characterized by scanning electron microscopy, energy dispersive spectroscopy and X-ray diffractometer, while the effects on the electrical properties were investigated by varistor tester, pulse surge tester and precision impedance analyzer. The results showed that the growth of the (0002) plane of the ZnO varistors was inhibited by doping NiO, which improved the electrical properties of the varistors, especially the surge shock stability. The sample doped with 1.56 mol% NiO exhibited excellent electrical properties with breakdown voltage gradient of 184.0 V/mm, nonlinear coefficient of 72.7, leakage current of 0.37 µA, clamp voltage ratio of 2.20 under 8/20 μs waveform impact of 20 kA and change rates of positive and negative breakdown voltages of < 4% under 20 times impacts of 20 kA.
研究领域:
材料科学
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电子陶瓷
·
电气工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Dianping Zhang,Nengjun Mao,Qi Chen,Jiahui He,Yuxin Meng,Xiaoxia Ma,Hao Wang
Novel CuO/NiO NFs with 3D porous heterojunction via electrospinning-calcination • High sensitivity (410.69μAmM −1 cm −2 ),low LOD (0.94 μM),wide linear range (10 μM-10 mM) • Synergistic catalysis by Cu 2+ /Cu 3+ and Ni 2+ /Ni 3+ redox couples with interfacial coupling • Excellent selectivity,reproducibility (RSD < 1.4%),stability (89.5% retention over 14d) • Multi-scale characterization confirms structure-performance correlation Diabetes, a globally prevalent chronic metabolic disorder, requires precise and rapid blood glucose monitoring for effective management. Addressing the bottlenecks of high cost and poor stability associated with enzyme-based sensors, as well as the limited performance of existing non-enzymatic sensors, this study successfully prepared CuO/NiO composite nanofibers (CuO/NiO NFs) via an integrated electrospinning-calcination strategy. The electrochemical performance of the material for non-enzymatic glucose detection was systematically evaluated. Results indicate that the CuO/NiO NFs-300 material, obtained under optimized calcination conditions at 300 °C, possesses a three-dimensional (3D) porous network structure, CuO/NiO heterointerfaces, and abundant surface oxygen vacancies. These features collectively induce a synergistic enhancement through geometric and electronic effects. The constructed sensor demonstrated outstanding comprehensive performance: a high sensitivity of 410.69 μA mM −1 cm −2 , a low detection limit of 0.94 μM, a wide linear range from 10 μM to 10 mM, along with high selectivity, excellent reproducibility, and long-term stability. Performance comparison reveals that this work achieves an order-of-magnitude improvement in sensitivity across a wide linear range, overcoming the common limitation in existing technologies where facile preparation and high performance are difficult to reconcile. Crucially, it maintained high accuracy (average recovery rate of 99.1%) in spike-recovery tests using a commercial functional beverages as a complex real-world sample, highlighting its strong potential for practical analytical applications. The schematic diagram of the preparation process of CuO/NiO NFs. Download: Download high-res image (119KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 14
·1048
·
IF 3.2
Zhang Rui,Xu Yanpei,Li Sun,Wang Jiyun,Wang Xiaohan,Zou Yulu,Wang Qi
This study developed a surface plasmon resonance (SPR) ethanol sensor enhanced by a Co 3 O 4 /NiO/MXene nanocomposite. The Co 3 O 4 /NiO/MXene heterostructure was first synthesized via electrostatic self-assembly, and then immobilized onto the gold surface at varying concentrations through covalent bonding. The material’s high specific surface area and abundant active sites significantly enhanced ethanol adsorption, leading to a substantial amplification of the SPR response. Experimental results demonstrated optimal performance at a coating concentration of 1.5 mg/mL, achieving a sensitivity of 3216.20 nm/RIU. This represents a 36% enhancement compared to a conventional pure gold film sensor (2364.85 nm/RIU). Material characterization (SEM, XPS, XRD, BET) confirmed the successful synthesis of the composite and its porous structural properties. The sensor exhibits excellent linear response and high sensitivity, showing significant potential for application in ethanol detection.
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DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 62
·35948-35956
·
IF 3.049
Yue Pan,Weijia Zeng,Rong Hu,Bo Li,Guiling Wang,Qintang Li
Cu foil is widely used in commercial lithium ion batteries as the current collector of anode materials with excellent conductivity and stability. In this research, commercial Cu foil was chosen as the current collector and substrate for the synthesis of Cu doped flake-NiO via a traditional hydrothermal method. The effect of the ratio of Cu and the calcination temperature on the electrochemical performance of NiO was investigated. The structure and phase composition of the Cu doped flake-NiO electrode were studied through X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDAX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and inductive coupled plasma emission spectrometry (ICP). The electrochemical properties of the Cu doped flake-NiO electrode were studied through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and a galvanostatic charge–discharge cycling technique. According to the results, the Cu-doped NiO electrode, calcined at 400 °C with a molar ratio of Cu : Ni = 1 : 8, exhibited a high reversible charge capacity. The good cycling stability and rate performance indicate that the as-prepared electrode can be applied as a potential anode for lithium ion batteries.
研究领域:
材料科学
·
电化学
·
储能技术
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纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）