Arabian Journal of Chemistry
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2023
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IF 6
Yongjun Shen,Yin Chen,Shuaikang Fang,Jae Kwang Park,Kun Feng
To solve the current energy and environmental dilemma, hydrogen energy is considered to be the best clean energy source to replace traditional fossil fuels. Water electrolysis as the main technology for hydrogen production has been affected by two half-reactions, making it difficult to improve the yield. To solve this problem, the development of inexpensive and efficient bifunctional electrocatalysts is the focus of current research. CuCo 2 S 4 /NF(Ni foam) nanowires are synthesized using a mild hydrothermal process and were later placed in a plasma reactor. Application of the voltage triggers a chemical reaction between the microdischarge wires and the sample. This leads to a change in the physical morphology of the catalyst and an improvement in its catalytic performance. The morphological characterization results show that the catalyst modification generates a distinct flower-like nanowire structure, which helps in the solid attachment of the catalyst to the nickel foam surface. The plasma-modified CuCo 2 S 4 /Ni foam (PA@CuCo 2 S 4 /NF) exhibits low overpotentials of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solutions. Additionally, the Tafel slopes of the HER and OER are 85.9 mVdec −1 and 142.7 mVdec −1 , respectively, indicating optimal reaction kinetics. A cell voltage of only 1.55 V is required to provide a 10 mA cm −2 current during water splitting. This study validates the feasibility of using plasma technology to create high-performance electrocatalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Xuan Liu,Jianying Wang,Zhongying Fang,Shuaiqi Gong,Dengke Xiong,Wei Chen,Deli Wu,Zuofeng Chen
Herein, an ultrafast electro-corrosion approach is developed for activating Ni foam (NF) into an efficient electrocatalyst for upcycling polybutylene terephthalate (PBT) waste plastic. The electro-corrosion process assisted by Cl − is completed by only 6 CV cycles (∼3 min) and the activity of the treated NF (T-NF), characterized by the integrated Ni 2+ /Ni 3+ peak area is enhanced by 150 times. The T-NF electrode exhibits excellent catalytic activity toward 1,4-butanediol oxidation , delivering a current density of 50 mA cm − 2 at 1.36 V (vs. RHE). This allows the electrocatalytic reforming of 1,4-butanediol component in PBT hydrolysate into succinate with a high Faraday efficiency 93%. The in-situ Raman and FTIR spectroscopies combining density functional theory calculations identify catalytically active centers, critical intermediates, and favorable pathway for 1,4-butanediol oxidation to succinate. This work provides an ultrafast one-step surface engineering strategy to turn pristine Ni foams into high-performance electrocatalysts for upcycling PBT plastic and other electrochemical applications.
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ELECTROCHIMICA ACTA
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2023
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IF 6.6
Yanqing Fu,Dongdong Zhang,Pan Li,Yi Han,Juan You,Qiliang Wei,Weiyou Yang
The development of efficient non-precious metal electrocatalysts is essential for oxygen evolution reaction (OER) for water splitting. Among them, amorphous bimetallic NiFe-based compounds are recognized as one of the excellent candidates for efficient OER. Herein, the Ni-Fe-Se film is rationally designed via facile one-step electrodeposition with tailored active sites and thicknesses. Accordingly, the optimized sample, with an increased Fe-incorporation level and a thickness of ∼50 nm, shows a low overpotential of ∼290 mV at a current density of 40 mA cm −2 and long-term durability in 1 M KOH solution, representing its overall excellent OER performance. Furthermore, operando Raman and ex-situ XPS are used to identify the active sites for OER. This work provides some new insights into exploring earth-abundant free-standing catalysts for OER toward overall water-splitting applications.
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SENSORS AND ACTUATORS B-CHEMICAL
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2018
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IF 5.667
Bei Xue,Kezhi Li,Shengyue Gu,Leilei Zhang,Jinhua Lu
Nanocrystalline transition metal oxides have attracted a great deal of attention due to their good electrochemical activity. To pursue novel active electrode materials with low detection, high sensitivity and good selectivity for the detection of H 2 O 2 , Ni foam-supported ZnO nanowires and Co 3 O 4 /NiCo 2 O 4 double-shelled nanocages (ZnO/Co 3 O 4 /NiCo 2 O 4 /Ni foam) have been successful fabricated by facile and effective methods When tested as an enzymatic-free H 2 O 2 electrochemical sensor, the obtained ZnO/Co 3 O 4 /NiCo 2 O 4 /Ni foam exhibits fast response time within 5 s, low detection limit of 0.163 μM (S/N = 3), high sensitivity of 0.388 mA mM −1 cm −2 , wide linear range from 0.2 μM to 2.4 mM (R 2 = 0.996), exhibiting good selectivity and long-term stability. The reason is that special structure of the ZnO nanowires could provide direct electrical pathways for the fast electron transport and Co 3 O 4 /NiCo 2 O 4 double-shell nanocages provide abundant mesopores and large specific surface area to enhance the catalytic activity of H 2 O 2 detection. These results suggest that the ZnO/Co 3 O 4 /NiCo 2 O 4 /Ni foam could be considered as a promising electrode material to build electrochemical biosensor.
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ELECTROCHEMISTRY COMMUNICATIONS
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2016
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IF 4.569
Xiaojuan Chen,Guangfeng Zeng,Taotao Gao,Zhaoyu Jin,Yajie Zhang,Hongyan Yuan,Dan Xiao
Electrochemical water splitting in an alkaline electrolyte for large-scale hydrogen production is currently a hot research topic. However, developing high-performance and durable oxygen-evolving electrocatalysts is an ongoing challenge. In this work we prepared Ni-phytate thin films with a bubble-like structure on Ni-foam through an in situ growth process. The resulting material can be used as an oxygen-evolving electrode in basic media without requiring the use of a conductive binder. The Ni-phytate electrode has high catalytic activity ( η j = 10 mA cm − 2 = 280 mV) and good stability (the current activity remained 95% after 5 h) towards OER. This is an effective approach to simplifying the large-scale preparation of catalysts for water-splitting applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Muhammad Tahir Khalil,Yanyan Liu,Pengxiang Zhang,Huanhuan Zhang,Ruofan Shen,Xianji Guo,Xianli Wu,Baojun Li
Transition metal phosphides are increasingly recognized for their durability and resistance to corrosion in catalytic processes. Ni-based phosphide catalyst (Ni-NiP-NC@NF) was synthesized, and experimental results verified the consistent formation of Ni–NiP nanoparticles (NPs) exhibiting a nano-brick-like structure. These Ni–NiP NPs, with an average diameter of 2.5 nm, demonstrated strong electronic interactions between the nickel sites and the incorporated phosphorus (P). The synergistic interaction raises the number of active sites (NiP) and enhances the electronic properties of the metallic nickel (Ni) sites. The optimized catalyst (Ni-NiP-NC@NF) showed remarkable catalytic performance in the hydrolysis of ammonia borane, achieving a hydrogen evolution rate ( r B ) of 1298 mL min −1 g −1 Ni, a turnover frequency (TOF) of 30.5 min −1 , and an apparent activation energy ( E a ) of 36.05 kJ mol −1 . This work provides a promising methodology for the development of transition metal phosphide catalysts aimed at industrial applications in heterogeneous catalysis and sustainable energy technologies.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Zhang YaXi,Liang Jin,Zhang Li,Zou FengYuan,Li YunFeng,Zeng ZiQuan,Lei Tian,Yang Guang
As a clean energy carrier, hydrogen necessitates efficient production via cost-effective, highly active non-noble metal electrocatalysts. Herein, we demonstrate a Zn-doped CoP heterostructure catalyst anchored on MXene-engineered nickel foam (MXene@ZnCoP/NF) through synergistic substrate engineering and compositional modulation. This design achieves exceptional alkaline hydrogen evolution reaction (HER) activity and superior overall water splitting efficiency. In 1.0 M KOH electrolyte, the MXene@ZnCoP/NF heterostructure exhibits exceptional HER performance, achieving a low overpotential of 15 mV at 10 mA cm −2 , 64 mV at 50 mA cm −2 , 214 mV at 500 mA cm −2 , and a Tafel slope of 86.0 mV dec −1 , indicative of rapid reaction kinetics. Furthermore, the catalyst demonstrates industrial-grade durability, maintaining stable operation for 65 h at 500 mA cm −2 without significant degradation. When integrated into a full-cell electrolyzer with RuO 2 /NF as the anode (RuO 2 /NF ||MXene@ZnCoP/NF), the system requires only 1.53 V to deliver a current density of 10 mA cm −2 , surpassing the performance of the noble metal system Pt-C/NF||RuO 2 /NF (1.61 V). This highlights its potential as a cost-effective alternative to noble metal-based electrocatalysts for scalable hydrogen production. The enhanced catalytic performance can be primarily attributed to the synergistic interplay of three key factors: the superior conductivity provided by MXene-engineered NF substrates, the Zn doping-induced crystalline-to-amorphous phase reconstruction, and the morphological transformation from micrometer-scale architectures to nanoscale structures. This study proposes an innovative “substrate–structure–composition” synergistic strategy that establishes a new paradigm for designing highly efficient non-noble metal HER electrocatalysts, thereby propelling the scalable industrial implementation of electrocatalytic water splitting for hydrogen production. Graphical abstract
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ACS Applied Nano Materials
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2020
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IF 0
Yixiang Pan,Xiaoyan Wang,Jianguo Lu,Qing Yan,Weiyong Yuan,Chang Ming Li
Metal–organic complex (MOC) multilayers are, for the first time, conformally constructed on Ni foam (NF) via a three-component sequential layer-by-layer (LbL) self-assembly approach and converted to three-dimensional (3-D) NF-supported interconnected CoO nanoparticles (NPs)/N-doped carbon nanohybrid multilayers via calcination. The obtained nanoarchitecture delivers an overpotential of 318 mV to achieve 10 mA cm–2 and a Tafel slope of 46.1 mV dec–1. This activity is superior to most reported oxygen evolution reaction (OER) catalysts, and even much better than those of Ir- and Ru-based ones measured under the same conditions (0.1 M KOH). Additionally, this electrode undergoes negligible potential and current change after 19.8 h chronopotentiometric measurement and 300 cyclic voltammetry cycles. The outstanding catalytic performance is mainly attributed to the ultrasmall and high-density CoO NPs embedded in N-doped carbon uniformly assembled on the 3-D substrate significantly increasing electrochemically accessible active sites and durability and the N-doped carbon greatly promoting intrinsic activity of CoO. This work not only creates 3-D highly tunable networked nanostructured electrodes with excellent durability for high-efficiency electrocatalysis but also develops a facile, economical, and extremely versatile strategy to controllably self-assemble conformal MOC-based multilayers with multifunctionality and superior performance on essentially any substrate at the molecular level for broad applications.
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Energy Material Advances
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2023
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IF 12.9
Jiao Xiang,Yuanduo Qu,Yanxin Zeng,Senyu Hu,Huiling Xu,Hong Xia,Muwei Ji,Lianfeng Duan,Fushen Lu
Lithium–sulfur batteries are considered important devices for the power of movable equipment, but there are still some challenges that limit their applications, such as how to obtain a cathode for high sulfide adsorption and rapid conversion. Here, a new strategy is proposed to enhance the performance of lithium–sulfur batteries by growing 3-dimensional hydrogen-substituted graphdiyne (HsGDY) layers on Ni foam via Glaser cross-coupling reaction to anchor MoS2/Ni3S2, enhancing the conductivity of host material of S. The results show that the 3-dimensional HsGDY framework enables the fast adsorption of lithium polysulfides and the Ni3S2/MoS2 performs as the reaction center with a low charge transfer resistance. The charge capacity of Ni@HsGDY/MoS2/Ni3S2 cell is up to 1,234.7 mAh·g−1 at the first circle, and the specific capacity keeps 486 mAh·g−1 after 500 cycles at a current density of 2 C. The incorporation of HsGDY into the cathode promotes the adsorption and the conversion of polysulfides, paving a path to obtain lithium–sulfur batteries with high energy density.
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APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Lingjie Li,Wenjun Huang,Jinglei Lei,Bo Shang,Nianbing Li,Fusheng Pan
The electrocatalyst with low cost and excellent catalytic performance for oxygen evolution reaction (OER) is indispensable in large-scale water electrolysis for hydrogen generation . Herein, we report an inexpensive and highly efficient OER catalyst, amorphous Ni-Fe-P holey nanospheres , which were in situ grown on 3D porous Ni foam by one-step electrodeposition . The as-prepared Ni-Fe-P/NF shows attractive catalytic performance in alkaline medium with a low overpotential of 156 mV at a 10 mA cm −2 current density, a Tafel slope of 69 mV dec −1 , and the long-term (>36 h) durability, which is superior to other well-performed metal-phosphide catalysts reported and the commercial catalyst IrO 2 . Such remarkable OER catalytic performance can be attributed to the synergism of Ni and Fe elements, the amorphous holey structure, the surface superaerophobicity and self-supportive configuration of the as-prepared Ni Fe bimetal phosphide.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Qi Liu,Wenrou Yu,Anping Liu,Lianjie Zhou,Wen Tang,Yingzhou Huang
Multiple Synergistic SERS Enhancement of 3D micro-nano Ni-foam@MoS₂ • Overcomes EBC matrix interference for ultrasensitive 2.95 nM lactate detection • AI algorithms decode complex SERS spectra for non-invasive health monitoring. To address the critical demand for highly sensitive sensing interfaces in non-invasive exhaled breath condensate (EBC) analysis, this study develops a high-performance SERS substrate featuring interlaced, needle-like MoS₂ nanoclusters grown in situ on a 3D nickel foam scaffold (Ni-foam@MoS₂). This architecture effectively overcomes the severe signal heterogeneity and poor wearable compatibility that typically plague traditional plasmonic metal substrates. The system synergizes multiple coupled SERS enhancement mechanisms: the 3D porous scaffold and interwoven needle-like arrays form abundant optical microcavities. These microcavities effectively confine incident light and significantly enhance light-matter interactions, thereby inducing electromagnetic enhancement. Concurrently, the interlaced MoS₂ arrays not only efficiently concentrate trace analytes but also induce substantial chemical mechanism via vigorous charge transfer. Consequently, the substrate achieves an outstanding average enhancement factor of 1.88 × 10 9 , alongside superb signal reproducibility and long-term environmental stability. By deploying this Ni-foam@MoS₂ substrate for the rapid off-line analysis of simulated exhaled breath condensate (EBC), we achieved the ultrasensitive detection of lactate (LA), a critical metabolic biomarker, with a limit of detection as low as 2.95 nM. Furthermore, coupling these complex spectral datasets with advanced artificial intelligence algorithms enabled the highly accurate classification of concentration-dependent LA spectral variations, demonstrating significant proof-of-concept potential for mask-integrated biomolecular sensing and non-invasive physiological monitoring.
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Journal of Cleaner Production
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2022
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IF 11.072
Xincheng Jiang,Yanyan An,Yaoyao Huang,Wei Ding,Manli Sun,Hong Li,Huaili Zheng
The residual antibiotics in the environment will pose a threat to the environment and human health. Thus, it is imperative to develop a smart water treatment material to remove and detect antibiotics from aqueous environment simultaneously. In this study, magnetic Cu–Ni–S@Ni foam was synthesized by liquid phase vulcanization method to in-situ load Cu–Ni–S nanostructures on the surface of Ni foam. The novelty of this material is the combination of adsorption-flocculation technology and semi-quantitative detection technology. Batch experiments showed that Cu–Ni–S@Ni foam has a high removal rate of norfloxacin (NOR) (96.92%), wide pH adaptability (pH = 4.0–10.0) and strong ion interference resistance (0.1–100 mmol/L). According to the Langmuir isotherm , the removal capacity can reach 417.4 mg/g at 25 °C, which is much higher than that of other water treatment agents reported in most studies. Characterization analysis indicated that the main removal mechanisms are surface complexation, cation bridging, electrostatic attraction , precipitation and flocculation . Transmission FTIR detection experiments showed that NOR on Cu–Ni–S@Ni foam has easily recognizable FTIR fingerprints; the intensity of characteristic peaks roughly reflects the concentration information of NOR to some extent. This semi-quantitative detection method, requiring simple operation without the fabrication of KBr tablet, has a wide linear range (5–100 mg/L) and a low limit of detection (4.6 mg/L). Therefore, Cu–Ni–S@Ni foam can be used for simultaneous removal and semi-quantitative detection of NOR in wastewater. It has potential application value in wastewater treatment and water quality monitoring.
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