ACS Applied Nano Materials
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2024
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IF 5.3
Shengkang Zhang,Yu Xiao,Qiwei Feng,Ziqiang Lei
The oxygen evolution reaction (OER) plays a pivotal role in the hydrolysis process of zinc–air batteries. Consequently, it is essential to develop cathode catalysts with both cost-effectiveness and high oxygen evolution activity. In this study, we synthesized the FeFFIVE-1-Ni two-dimensional (2D) metal–organic framework (MOF) nanosheets via a straightforward solvothermal approach and oxidized them in an air atmosphere. During the calcination process in an air atmosphere, the heteroatoms (O, F) within the FeFFIVE-1-Ni 2D MOF nanosheets combine with iron and nickel metal ions, forming FeOF and NiF2 compounds. The synergy between these compounds and the creation of surface cracks during calcination yield catalytic active power and catalytic active sites essential for the oxygen evolution reaction. Notably, the overpotential of FeFFIVE-1-Ni 2D MOF nanosheets calcined in air under alkaline test conditions (η10 = 286 mV) was lower than that of commercial RuO2 catalysts (η10 = 355 mV). This work presents an effective strategy for replacing noble metal catalysts such as RuO2 by simply treating fluorinated metal–organic frameworks.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2011
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IF 1.974
Jinqiang Jiang,Chao Gou,Jing Luo,Chenglin Yi,Xiaoya Liu
A new coumarin based colorimetric nickel sensor 1 with high selectivity and sensitivity toward Ni 2+ ion was reported. The absorption maximum of 1 shows a large red shift from 341 nm to 540 nm (Δ = 200 nm) in the presence of Ni 2+ ion, and the resulted color change from colorless to pink upon addition of Ni 2+ is very easily observed by the naked eye, while other metal ions , such as Zn 2+ , Cd 2+ , Cu 2+ , Fe 3+ , Ag + , Pb 2+ , alkali metal and alkaline earth metal cations do not induce such a change. By the “naked eye”, the detection limit of Ni 2+ is as low as 0.5 μM in solution, which is lower than the current American Environmental Protection Agency (EPA) standard for drinking water . As far as we are aware of, this is the first reported colorimetric chemosensor capable of detecting Ni 2+ ion.
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Journal of Energy Chemistry
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2017
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IF 2.594
Jinwei Sun,Yujiang Wang,Haikui Zou,Xiaoguang Guo,Zhou-jun Wang
Nanosheet (S) and nanoplate (P) γ-Al 2 O 3 were synthesized by simple hydrothermal methods and employed as supports for Ni catalysts in CO 2 methanation . Both of the nanostructured Ni/Al 2 O 3 catalysts displayed good activity. In comparison, the Ni/Al 2 O 3 -S catalyst showed higher CO 2 conversion than the Ni/Al 2 O 3 -P counterpart at the reaction temperature ranging from 250 to 400 °C. The physical and chemical properties of the catalysts were systematically characterized by N 2 sorption , X-ray diffraction (XRD), high resolution-transmission electron microscopy (HR-TEM), hydrogen temperature-programmed reduction (H 2 -TPR) and CO 2 temperature-programmed desorption (CO 2 -TPD) techniques. Higher specific surface area and stronger metal-support interactions were confirmed on the Ni/Al 2 O 3 -S catalyst, which may lead to smaller particle size of Ni nanoparticles . Moreover, the Ni/Al 2 O 3 -S catalyst possessed more abundant weak and medium basic sites, which would benefit the activation of CO 2 . The smaller Ni size and more suitable basic sites may rationalize the superior activity of the Ni/Al 2 O 3 -S catalyst. Besides, the Ni/Al 2 O 3 -S catalyst exhibited excellent stability at 325 °C for 40 h.
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RSC Advances
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2017
·Vol. 7
·期 60
·37823-37829
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IF 3.108
Jinglei Liu,Yiqun Zheng,Shifeng Hou
We report a facile synthesis of copper/nickel (Cu/Ni) alloy nanospheres in high purity and with tunable, well-controlled sizes and elemental ratios. The success of this synthesis relies on the use of one-pot, direct thermal reduction of a Cu and Ni precursor mixture in the presence of trioctylphosphine (TOP) and oleylamine (OAm) at an elevated temperature to form Cu/Ni alloy nanoparticles with a spherical shape and uniform size. Their sizes could be readily tuned in the range of 6.9–27.3 nm by simply varying the volume of TOP added to the reaction solution. The elemental ratio of Cu to Ni in resultant products was found to remain the same as that in the precursor, which offers a simple way to manipulate the composition of Cu/Ni alloy nanospheres. We also tested the catalytic performance of as-prepared Cu/Ni alloy nanospheres and evaluate the effect of size and elemental ratio using the reduction of 4-nitrophenol as the model reaction. The current strategy enables the size and composition controlled synthesis of Cu/Ni alloy nanomaterials and could find important use in the fabrication of other types of bimetallic alloy nanomaterials with desired sizes and compositions for catalytic purposes.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
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IF 4.1
Ting Lu,Xinyan Xiao,Fei Wang,Xia Cheng,Yu Zhang
A novel BiOBr/Ni-MOF composite was fabricated by in-situ growth of BiOBr nanosheets on Ni-MOF through a convenient precipitation process. The optimal photocatalytic performance was achieved with a Ni-MOF mass content of 45 wt% in the BiOBr/Ni-MOF composite. This composite exhibited remarkable efficiency, degrading 98.33 % of Rhodamine B in 90 min, surpassing the degradation rate constants of pristine BiOBr and Ni-MOF by 4.2 and 160 times, respectively. The superior performance was primarily ascribed to the efficient separation of photogenerated carriers facilitated by the formation of heterojunctions. Additionally, the increased specific surface area and pore structure provided numerous adsorption and active sites. Radical scavenger experiments and electron spin resonance experiments further revealed that O 2 − and h + played crucial roles in the degradation process. Furthermore, the structural properties of the prepared photocatalysts and the effects of different photocatalytic conditions on the degradation of RhB were investigated. This work offers an alternative perspective on the design and fabrication of BiOBr-based composite photocatalysts.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Zhuo Chen,Zhiyang Lu,Weijun Tian,Bingkun Liu,Bingjie Huo,Jing Zhao,Mengyuan Zou,Ruijuan Zhang,Xinran Yu,Xinbo Wang
Pyrene (Pyr) and its derivatives are classified as Persistent Organic Pollutants (POPs), which exhibit significant toxicological effects and pose serious threats to ecosystems. Photocatalytic technology is increasingly employed for the remediation of POPs due to its effective and environmentally sustainable degradation capabilities. However, conventional photocatalytic materials, primarily in powder form, face challenges related to separation and recovery from aqueous environments, significantly limiting their practical application. In this study, we successfully synthesized a three-dimensional (3D) porous immobilized photocatalytic material by decorating Ag 3 PO 4 and BiOBr onto Ni foam (NF) using a hydrothermal method combined with continuous ionic layer adsorption. The results demonstrated Ag 3 PO 4 /BiOBr/NF exceptional light degradation capabilities, achieving over 90 % degradation of Pyr, 1-methylpyrene, and 1-hydroxypyrene, as well as over 40 % degradation of 1-nitropyrene under visible light irradiation over a duration of 5 h. Its degradation efficiency decreased by 12.49 % after five cycles, demonstrating its reusability. The roles of superoxide radicals ( O 2 – ) and holes (h + ) were critical in the degradation process. Furthermore, based on experimental findings, we proposed a Z-type heterojunction degradation mechanism for the Ag 3 PO 4 /BiOBr/NF composite, accompanied by an analysis of the potential degradation pathways for Pyr. Consequently, the recyclable immobilized photocatalytic materials developed in this research contribute novel insights into the photocatalytic degradation of POPs.
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MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
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2025
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IF 2
Guiqun Liu,Boyu Zhang,Heming Wang,Qisheng Ma,Guanglei Lv,Xiaoli Zhang,Yishan Wu,Ding Li
In the present study, Ni-P-CS composite coating was prepared on Q235 carbon steel surface by electroless plating method. Candle soot (CS) is the soot produced by incomplete combustion of candles, and it is mainly composed of amorphous carbon and carbon nanoparticles. The results show that: the results indicated that the corrosion resistance of the Ni-P deposit improved with the incorporation of candle soot (CS). The electrochemical test of Q235 carbon steel, Ni-P and Ni-P-CS with 3.5% NaCl solution was performed at room temperature. The test results show that the protection efficiency of the new coating (Ni-P-CS) reaches 78.5%. Compared with the Ni-P coating with the protection efficiency of 47.08%, its corrosion resistance increased by 31.42 percentage points. This study demonstrates for the first time that Ni-P-CS composite coating is a feasible method for metal corrosion prevention, with inexpensive raw materials and easy preparation. It provides a novel idea for petroleum, chemical and other metal anticorrosion fields.
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DALTON TRANSACTIONS
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2025
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IF 3.3
Wei Jia,Qi He,Zhiqiang Guo,Xiang Wu
The development of electrode materials has become a top priority as the requirement of global energy. Two-dimensional Ni(OH) 2 nanomaterials hinder its application in supercapacitors due to its low conductivity and limited active sites.Herein, we synthesize Ni(OH) 2 @NiS composites by a two-step hydrothermal route. It increases the specific surface area of samples and improves the ion transport rate. The Ni(OH) 2 @NiS-2 product delivers a specific capacitance of 1778 F g -1 at 1 A g -1 and cycle stability (88% at 2 A g -1 after 10,000 times cycling). Furthermore, the asymmetric supercapacitor (ASC) achieves an energy density of 110.25 Wh kg -1 at 2700 W kg -1 . Also, the devices show stable cycling capability at extreme temperatures.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yunlong Yao,Peng Zhang,Yao Wang,Zhou Du,Zhichao Sun,Ying-Ya Liu,Anjie Wang
This study investigates the catalytic hydrogenation of biomass-derived furfural to value-added products, especially tetrahydrofurfuryl alcohol and furfuryl alcohol. A series of Ni-Fe-Al composite catalysts were synthesized through co-precipitation and subsequent hydrogen reduction. Among these, the Ni 5 Fe 1 Al 2 catalyst demonstrated extraordinary catalytic performance, achieving complete furfural conversion and 92.9 % tetrahydrofurfuryl alcohol selectivity under mild conditions (50 °C, 0.5 MPa H 2 ). Comprehensive characterization using XRD, TEM, and XPS revealed that the optimized Ni 5 Fe 1 Al 2 –400 catalyst possessed high dispersion and abundant oxygen vacancies. The addition of pyridine in the feed had a great impact on the hydrogenation rate of furfuryl alcohol but much less on that of furfural. With pyridine in the feed, the main product shifted from tetrahydrofurfuryl alcohol to furfuryl alcohol, while maintaining complete furfural conversion and achieving 97.5 % furfuryl alcohol selectivity at 50 °C. The Ni 5 Fe 1 Al 2 –400 deactivated in the 50-h run and can be regenerated by simple in-situ reduction, demonstrating excellent regenerability. These findings provide valuable insights into the design of efficient catalysts for selective biomass conversion.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zhengang Zhou,Junjie Zheng,Lingyu Shao,Xiao Zhang,Chengjin Pan,Xiuqi Hu,Kai Feng,Hao Song,Shihan Zhang,Chenghang Zheng,Xiang Gao
Catalytic solvent regeneration has garnered significant attention due to its capacity to lower energy demands in industrial processes, promoting broader adoption of carbon capture systems. While progress has been made in catalyst engineering, creating efficient solid acid catalysts still encounters critical obstacles such as synthesizing mesoporous architectures with extensive surface areas and improving the spatial arrangement of active sites. Herein, this study developed a Ni/Fe@KIT-6 catalyst with ordered porosity and dual metal acid sites, leveraging the three-dimensional cubic pore structure of mesoporous silica to enhance liquid-solid mass transfer. The anchored Ni/Fe clusters synergistically enhanced proton transfer, reducing the activation energy of carbamate decomposition through optimized intermediate adsorption configurations. Catalytic testing revealed a 58.1 % enhancement in CO₂ desorption efficiency alongside a 41.2 % decrease in energy requirements relative to non-catalytic systems. The material maintained stable performance across multiple absorption-desorption cycles (efficiency decline <10 %), linked to the KIT-6 framework's retained structural stability and optimized metal-support bonding. Theoretical calculations revealed that the Ni/Fe dual sites lowered the CO 2 desorption reaction energy barrier, aligning with the enhanced CO₂ desorption efficiency. This synergistic interaction of dual metal acid sites within a high-surface-area architecture highlights viable pathways for scalable and energy-efficient CO₂ desorption, thereby advancing practical strategies for large-scale deployment of carbon capture technologies.
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ADVANCED MATERIALS
·
2025
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IF 26.8
Zengguang Shi,Yukun Xiao,Mian Li,Jianfeng Cai,Yanmei Chen,Jun Jiang,Xiaoping Ouyang,Zhifang Chai,Qing Huang
Van der Waals (vdW) layered materials have gained significant attention owing to their distinctive structure and unique properties. The weak interlayer bonding in vdW layered materials enables guest atom intercalation, allowing precise tuning of their physical and chemical properties. In this work, a ternary compound, Ni x In 2 Se 3 (x = 0–0.3), with Ni randomly occupying the interlayers of In 2 Se 3 , is synthesized via an intercalation route driven by electron injection. The intercalated Ni atoms act as “anchor points” within the interlayer of In 2 Se 3 , which effectively suppresses the phase transition of In 2 Se 3 at elevated temperatures. Furthermore, the disordered Ni intercalation significantly enhanced the electrical conductivity of In 2 Se 3 through electron injection, while reducing the thermal conductivity due to the interlayer phonon scattering, leading to an improved thermoelectric performance. For instance, the thermoelectric figure of merit (ZT) of Ni 0.3 In 2 Se 3 increased by 86% (in-plane) and 222% (out-of-plane) compared to In 2 Se 3 at 500 °C. These findings not only provide an effective strategy to enhance the performance of layered thermoelectric materials but also demonstrate the potential of intercalation chemistry for expanding the application scope of van der Waals (vdW) layered materials.
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ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Yuhua Xie,Yumei Feng,Shuyuan Pan,Haifeng Bao,Yingjie Yu,Fang Luo,Zehui Yang
The commercialization of water-splitting technology strongly relies on the stable and high-performance electrocatalyst for hydrogen and oxygen evolution reactions (HER-OER). In this work, the nickel dopants in IrRu alloyed electrocatalyst for acidic water splitting activity are investigated. The incorporation of nickel dopants induces more oxygen atoms coordinating with Ir/Ru facilitating the formation of *OOH species via nucleophilic attack by H 2 O. Additionally, a fast surface reconstruction is achieved due to the electrochemical dissolution of Ni dopants; as a result, more oxygen species are incorporated, evidenced by in situ Raman spectroscopy and electrochemical impedance spectroscopy. Therefore, the mass activity for Ni@IrRu is enhanced by threefold than commercial IrO 2 in acidic OER catalysis. Moreover, the nickel dopants balance the hydrogen binding strength; as a result, only 609 mV overpotential is demanded to reach 1 A cm −2 in acidic HER catalysis. The polymer electrolyte membrane water electrolyzer (PEMWE) test indicates only 1.87 V is required to attain 2 A cm −2 , 160 mV lower than Pt/C-IrO 2 revealing its potential application in PEMWE.
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