ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Shan Ni,Hongnan Qu,Huifang Xing,Zihao Xu,Xiangyang Zhu,Menglei Yuan,Li Wang,Jiemiao Yu,Yanqing Li,Liangrong Yang,Huizhou Liu
Exploiting precious-metal-free and high-activity oxygen evolution reaction (OER) electrocatalysts has been in great demands toward many energy storage and conversion processes, for example, carbon dioxide reduction, metal–air batteries, and water splitting. In this study, the simple solid-state method is employed for coupling Ni (electron donors) with lower-Fermi-level MoO2 or WOx (electron acceptors) into donor–acceptor ensembles with well-designed interfaces as robust electrocatalysts for OER. The resulting Ni/MoO2 and Ni/WOx electrocatalysts exhibit smaller overpotentials of 287 and 333 mV at 10 mA cm–2 as well as smaller Tafel slopes of 51 and 65 mV/dec, respectively, with respect to the single Ni, MoO2, WOx, and even the benchmark RuO2 in 1 M KOH. Specially, on account of a higher Fermi level of Ni in comparison with MoO2 and WOx, their strong electronic interaction results in directional interfacial electron transfer and increases the hole density over Ni, dramatically enriching the population of high-valence Ni3+ active sites and decreasing the Fermi level of Ni. The existence of Ni3+ can strengthen the chemisorption of OH–, and the downshift of the Ni Fermi level can significantly expedite migration of electrons toward the surface of catalysts during OER, thus synergistically boosting the OER catalytic performance. Furthermore, the inner Ni/MoO2 and Ni/WOx heterostructures and the electrochemically induced surface layers of oxides/hydroxides collectively boost the OER kinetics. This study highlights the importance of designing highly efficient OER electrocatalysts with high-valence active species (Ni3+) and better matched energy levels induced by the work function difference through interfacial engineering.
研究领域:
电化学
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材料科学
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能量存储与转换
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DOI
PubMed
高影响因子
PHYSICA SCRIPTA
·
2024
·Vol. 99
·期 10
·105604
·
IF 2.6
YangTao Yuan,ZhengXian Zhou,XuDong Hao,JiaJia Mi,Yu Cao,JianPing Shi
Surface-enhanced Raman scattering (SERS) is a spectroscopic technique that utilizes nanostructured substrates and is vital in food analysis. However, enhancing SERS substrates' sensitivity and applicability remains a challenge. The conductive metal organic framework Ni3(HHTP)2 has been widely used due to its excellent conductivity and porous structure. This study combines Ni3(HHTP)2's charge transfer properties with AgNPs's localized surface plasmon resonance to create a highly sensitive SERS substrate. Firstly, rod-shaped Ni3(HHTP)2 was prepared, and then a monolayer of AgNPs film was loaded on its surface. The substrate can detect crystal violet at a concentration of 10−14 M, and Ni3(HHTP)2 has a flat structure, coupled with AgNPs film, provided good detection uniformity (Relative Standard Deviation, RSD = 10.09%). Moreover, the substrate successfully detected food additives solutions, as well as the pesticide residues on fruit surfaces by bending. This substrate offers a rapid monitoring solution for food safety, facilitating real-time detection of contaminants in daily life.
研究领域:
分析化学
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食品科学
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材料科学
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光谱学
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DOI
高影响因子
Small
·
2026
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IF 11.8
Qiu Ren,Nathan Delaney,Zhen Liu,Cassidy Tran,Samuel Eisenberg,Angel Maqueda Alvarado,Cheng Zhu,Yanqing Xin,Denghui Zhang,Guizeng Liang,Tianyi Kou,Xiao Wang,Yat Li
The urea oxidation reaction (UOR) offers a low-energy alternative to the oxygen evolution reaction (OER) for hydrogen generation while simultaneously enabling urea-rich wastewater remediation. However, most nickel (Ni)-based catalysts rely on in situ oxidation of Ni 2+ to Ni 3+ , the actual active species, requiring high anodic potentials and resulting in substantial overpotentials. Here, we introduce a simple yet effective strategy to intrinsically enrich Ni 3+ content in nickel sulfide (Ni 3 S 2 ) by adjusting sulfur precursor concentration during hydrothermal synthesis. This approach yields a Ni 3 S 2 catalyst with an increased Ni 3+ /Ni 2+ ratio, achieving a UOR current density of 100 mA cm −2 at only 1.361 V vs. RHE. Density functional theory (DFT) calculations reveal that sulfur-modulated Ni 3 S 2 surface provides a more energetically accessible pathway for C─N bond cleavage compared to sulfur-free Ni(OH) 2 , and that increasing the Ni 3+ /Ni 2+ ratio within the sulfide framework further lowers the energy barrier of the rate-determining step. These results highlight the critical role of sulfur in defining the catalytic scaffold and modulating Ni oxidation states. Furthermore, integrating the catalyst with a 3D-printed interpenetrating device architecture and flow-cell system markedly enhances mass transport and overall performance. This work highlights sulfur-enabled Ni valence modulation as an effective route to advance UOR kinetics and demonstrates the synergy between catalyst design and device engineering for sustainable hydrogen generation coupled with wastewater remediation.
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PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
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IF 3.8
Wenxuan Zhang,Chuqian Xiao,Yuhang Li,Chunzhong Li
5-Hydroxymethylfurfural (HMF) electrooxidation for 2,5-furandicarboxylic acid (FDCA) production has become a sustainable method for value-added products at the anode. Here, an amorphous NiMo composite oxide supported on nickel foam (NF) is fabricated for HMF electrooxidation (HMFOR) via one-step electrodeposition. The synthesized NiMo/NF delivers 98.3% FE toward FDCA at 1.5 VRHE and maintains FE above 90% during 10 h. In situ Raman spectroscopy proves the formation of the active species Ni3+-OOH during the reaction process. Due to the introduction of high-valent Mo6+, the Ni3+ active species can be stabilized and the adsorption of aldehyde in HMF can be promoted during the reaction process, thus enhancing the FDCA electrosynthesis performance.
研究领域:
材料科学
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电化学
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催化化学
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
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2018
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IF 3.886
Fuping Tian,Qiaofeng Ru,Chenxia Qiao,Xin Sun,Cuiying Jia,Yu Wang,Yifu Zhang
This work presented the synthesis of Ni-based metal-organic framework material with a paddle-wheel structure Ni 3 (BTC) 2 (Ni-BTC) and its application in thiophene (TP) adsorption from gasoline distillate by batch method. Adsorption isotherms of TP, cyclohexene , and toluene in cyclohexane onto Ni-BTC were conducted at 298–308 K to interpret the different effect of cyclohexene and toluene on TP adsorption. The results showed that, compared with cyclohexene, toluene addition in model gasoline led to a more evident decline in sulfur capacity of Ni-BTC, which is opposite to isostructural HKUST-1. The adsorption isotherms of TP, cyclohexene and toluene fit Langmuir model, S-type model and Temkin model well, respectively, indicating that the adsorption mechanisms of TP and the two competitors are different from one another. The adsorption capacities on Ni-BTC followed the order of cyclohexene < toluene < TP at the same equilibrium concentrations , implying the order of the adsorption affinities, which is in good agreement with the different extent of influence by the two competitors. The enthalpy of TP adsorption on Ni-BTC was estimated to be −80.01 kJ/mol, almost twice that on HKUST-1. The poor reusability of Ni-BTC in batch experiment, which is owing to its sensitivity to the air, can be prevented from regenerating used Ni-BTC in fixed-bed reactor by N 2 flow. The difference between Ni-BTC and HKUST-1 in maximum adsorption capacity ( q 0 ), Δ H of TP adsorption, and stability demonstrates that the central metal in isostructural MOFs plays a key role in adjusting the desulfurization performance, which may open up a potential avenue for the development of MOF-based adsorbents with superior desulfurization performance.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Runfang Yang,Kai Zhang,Wei Yan,Chunyang Li,Yiwen Long,Maosheng Wu,Xiaolin Cheng,Hongwei Han,Xingguang Zhang,Mingxing Zhang,Guozhong Wu
Ni 3 (NO 3 ) 2 (OH) 4 positive electrode material was for the first time synthesized by gamma ray radiation under ambient conditions, and systematically investigated the synthesis mechanisms and electrochemical performance. The electrochemical performance of Ni 3 (NO 3 ) 2 (OH) 4 electrode can be regulated by controlling the absorbed dose. Ni 3 (NO 3 ) 2 (OH) 4 -200 kGy displays a remarkable electrochemical performance for supercapacitor, including a high specific capacity (1,086.7 C g –1 at 1 A g –1 ), good rate capability (50.6% at 15 A g –1 ), fast Faraday reaction kinetics, and excellent electrochemical cycle stability (90.8% retention at 5 A g –1 , after 5,000 cycles). Furthermore, the assembled Ni 3 (NO 3 ) 2 (OH) 4 -200 kGy//AC hybrid device exhibits a notable energy density of 99.8 Wh kg –1 at a power density of 849 W kg –1 (1 A g –1 ), and excellent electrochemical cycle stability, retaining ~92.5% of its initial capacitance after 5,000 cycles at 1 A g –1 . This work provides a new reaction pathway for the synthesis of inorganic materials and expands the potential application of radiation technology for electrode materials.
研究领域:
材料科学
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电化学
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纳米技术
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辐射化学
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储能
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Chun Yin,Fulin Yang,Shuli Wang,Ligang Feng
Efficient heterogeneous catalysts play a very important role in the value-updated green hydrogen production from urea-containing wastewater. Herein, NiSe 2 /MoSe 2 heterostructured catalyst with optimized interfacial electron redistribution and urea adsorption energies via a strong built-in electric field was demonstrated effective for the urea-assisted water splitting reactions. Efficient catalytic performance was found on NiSe 2 /MoSe 2 hybrid microsphere owing to the combined merits such as the unique structure features, the strong synergetic coupling effects, the increased active sites, and the high amount of intrinsic Ni 3+ species. Excellent urea oxidation activity was found to drive 10 mA cm −2 at the potential of 1.33 V when loaded on the glassy carbon electrode, and a cell voltage of 1.47 V was required in the NiSe 2 /MoSe 2 ||Pt/C urea-water electrolyzer to drive 10 mA cm −2 , about 220 mV less than that of water electrolysis, indicating a less energy consumption technique during the electrolysis. The spectroscopic and theoretical analysis revealed the effective synergy of the Ni–Se bond and Mo–Se bond that would be promising for efficient catalyst system construction.
研究领域:
材料科学
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能源化学
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催化化学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
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IF 7.1
Junqing Chang,Mati Horprathum,Dianhui Wang,Gang Meng,Zanhong Deng,Bin Tong,Pinit Kidkhunthod,Tiantian Dai,Meng Li,Hongyu Liu,Wei Tong,Shimao Wang,Xiaodong Fang
Though p-type NiO possesses excellent catalytic oxidation property toward volatile organic compounds (VOCs), intrinsic low sensitivity of NiO (arising from the hole accumulation layer configuration in ambient air atmosphere sensor) restricts its promising applications in VOCs detection. In this study, Sc and Li were proposed to modulate the (surface) properties of NiO nanosheet-flowers based sensors. At the optimal 2 at.% Sc and 5 at.% Li doping ratio (Ni 0.93 Sc 0.02 Li 0.05 O), the sensitivity to 100 ppm ethanol is 118.4 (105 times higher than that of pure NiO), which is comparable to or even higher than most of reported NiO based sensors. Moreover, Ni 0.93 Sc 0.02 Li 0.05 O sensor exhibits a low detection limit of 10 ppb, excellent repeatability and long-term stability (∼30 % decline of response after 7 months). Apart from regulating the carrier concentration, defect characterizations indicate a noticeable increase of stabilized surface oxygen vacancy (O V ) defects and Ni 3+ cations by Sc 3+ and Li + co-doping, which greatly facilitate the adsorption of VOCs molecule (revealed by density functional theory calculation) as well as the subsequent VOCs/NiO interfacial charge interaction, thus contribute to the superior sensing performances. This work demonstrates that co-doping offers an effective avenue for boosting the performances of (p-type) oxide sensors.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2024
·
IF 15.7
Adel Al-Salihy,Ce Liang,Abdulwahab Salah,Abdel-Basit Al-Odayni,Ziang Lu,Mengxin Chen,Qianqian Liu,Ping Xu
The potential of sustainable hydrogen production technology through water splitting necessitates the rational design of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) bi-functional electrocatalysts . In this context, we initially synthesized and empirically evaluated ultralow Ru-doped NiMoO 4 @Ni 3 (PO 4 ) 2 core-shell nanostructures on nickel foam (Ru-NiMoO 4 @Ni 3 (PO 4 ) 2 /NF). The hydrous NiMoO 4 nanopillars were hydrothermally grown on NF, followed by successive RuCl 3 etching and subsequent phosphorylation processes, leading to the final Ru-NiMoO 4 @Ni 3 (PO 4 ) 2 /NF. The catalyst demonstrated impressive HER overpotential values of −14.8 and −57.1 mV at 10 and 100 mA cm −2 , respectively, with a Tafel slope of 35.8 mV dec −1 . For OER at 100 mA cm −2 , an overpotential of 259.7 mV was observed, with a Tafel slope of 21.6 mV dec −1 . The cell voltage required for overall water splitting was 1.43 V at 10 mA cm −2 and 1.68 V at 100 mA cm −2 . Moreover, the catalyst exhibited superior stability for 150 h, emphasizing its practical utility for long-term applications. Subsequent density functional theory calculations aligned with these empirical findings, indicating a low water dissociation energy barrier (Δ G b = 0.46 eV), near-zero free adsorption energy for HER (Δ G *H = 0.02 eV), and suitable free adsorption energy for OER (Δ G *OOH − Δ G *OH = 2.74 eV), alongside a high density of states near the Fermi level . These results, informed by both experimental evaluation and theoretical validation, highlight the potential of Ru-NiMoO 4 @Ni 3 (PO 4 ) 2 /NF as a high-performance catalyst for water splitting, setting a solid foundation for advancements in sustainable energy technologies.
研究领域:
材料科学
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催化化学
·
可再生能源技术
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产品关联
DOI
高影响因子
Journal of Energy Storage
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2022
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IF 8.907
Xiaolin Sun,Kai Zhao,Zhiqiang Liu,Zhonghan Feng,Zihao Wang,Liang Cui,Jingquan Liu
The construction of cost-effective, efficient, and sustainable energy storage systems is extremely important for future fuels globally. Nickel borates display important characteristics in electrochemical catalytic applications, whereas few reports have focused on their energy storage properties in supercapacitors . Herein, Ni 3 (BO 3 ) 2 nanospheres (NSs) are fabricated on titanium (Ti) mesh to afford Ni 3 (BO 3 ) 2 NSs@Ti using a simple and scalable electrodeposition technique, whose electrochemical performance is carefully studied. The Ni 3 (BO 3 ) 2 NSs@Ti obtained at 1.2 V (Ni 3 (BO 3 ) 2 NSs-1.2V) exhibits a higher specific capacitance of 663 F g −1 with a current density of 0.5 A g −1 . Furthermore, by directly employing Ni 3 (BO 3 ) 2 NSs-1.2V as the positive electrode and activated carbon as the negative electrode , an asymmetric supercapacitor (ASC) device can be fabricated and displays the energy density up to 30.6 Wh kg −1 at the power density of 400 W kg −1 . Hence, the facile electrodeposited Ni 3 (BO 3 ) 2 NSs can be a potential platform for energy storage applications .
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 51
·2308191
·
IF 19
Jianxi Lu,Songbo Chen,Yuling Zhuo,Xinya Mao,Dong Liu,Zhenbo Wang
Hydrogen production through seawater electrolysis faces several challenges, one of which involves the development of electrocatalysts with high catalytic performance. Here, surface amorphization and morphology engineering are combined to design a novel electrocatalyst for highly-efficient hydrogen evolution reaction (HER). The surface-amorphized MoO 2 /Ni 3 (PO 4 ) 2 microcolumns supported on nickel foam (SA-MoO 2 /Ni 3 (PO 4 ) 2 /NF) display remarkable performance with low overpotentials of 34 and 46 mV at a current density of 10 mA cm −2 in 1 m KOH and alkaline seawater, respectively. In addition, the alkaline electrolysis cell (AEC) integrated with SA-MoO 2 /Ni 3 (PO 4 ) 2 /NF as the cathode and Ni foam as the anode achieves a current density of 100 mA cm −2 at 1.87 V in 6 m KOH seawater at 60 °C, superior to that of industrial NiMo electrode as cathode (2.05 V). DFT calculations demonstrate that the surface amorphous layer (MoO x ) improves the hydrogen adsorption energy of sample and reduces the energy barrier of water dissociation. It is found that substantial improvement in catalytic performance stems from the synergistic effect between surface amorphization and unique microcolumn morphology. These findings may provide insights into combining surface amorphization and morphology engineering strategies to enhance catalytic performance and pave the way for the development of highly efficient seawater HER electrocatalysts.
研究领域:
材料科学
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能源化学
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催化科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Zhuo Wang,Meiting Wang,Luan Fang,Zihan Li,Ping Nie,Yuting Gao,Juan Jian,Limin Chang
Hydrogen produced through self-powered water-splitting can effectively meet the demand for miniaturized devices. However, the design of an efficient catalyst that integrates a zinc-air battery (ZAB) with a water-splitting cell is crucial for the development of such devices. In this study, we synthesized Pt/Ni 3 (PO 4 ) 2 on nickel foam (NF) via a two-step process. The resulting Pt/Ni 3 (PO 4 ) 2 /NF exhibited significantly enhanced trifunctional properties (hydrogen evolution reaction, HER; oxygen evolution reaction, OER; oxygen reduction reaction, ORR) compared to the Ni 3 (PO 4 ) 2 /NF precursor. Additionally, the ZAB assembled using Pt/Ni 3 (PO 4 ) 2 /NF as the air-cathode demonstrated superior rechargeable performance compared to the Ni 3 (PO 4 ) 2 /NF-based counterpart. Moreover, when Pt/Ni 3 (PO 4 ) 2 /NF was directly used as both the cathode/anode for the water-splitting device and the air-cathode for the ZAB, the self-powered hydrolysis device exhibited excellent hydrogen production performance. Upon investigating the influence of in-situ decorated Pt nanoparticles, we found that these Pt nanoparticles: 1) facilitate the morphological reconstruction of Ni 3 (PO 4 ) 2 , thus increasing the electrochemical surface area of the catalyst; 2) lower the hydrogen adsorption free energy of Pt/Ni 3 (PO 4 ) 2 , and the associated OER theorical potential; 3) shift the d-band center of Pt/Ni 3 (PO 4 ) 2 closer to the Fermi level, ultimately enhancing its intrinsic catalytic activity. This work is expected to provide a foundation for experimental, theoretical, and practical applications of other Ni 3 (PO 4 ) 2 -based multifunctional materials.
研究领域:
材料科学
·
电化学
·
能量存储与转换
·
纳米催化
·
氢气生产
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）