JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Shishu Sun,Tianyi Sun,Dashuai Zhang,Jinrui Liu,Liying Ren,Chuilong Chen,Wei Yao,Zaifeng Shi
In this paper, the synthesis, characterization, and photocatalytic performance of CuNi/TiO 2-x composites in the degradation of antibiotic Norfloxacin (NOR) under visible light were investigated. Compared to conventional TiO 2 , the composite catalyst demonstrated superior photocatalytic activity by introducing CuNi nanoparticles and oxygen vacancy in TiO 2 . The oxygen vacancy defect in titanium dioxide crystal reduced the band gap energy. In addition, the incorporation of Cu nanoparticles leveraging Surface Plasmon Resonance (SPR) and Ni nanoparticles as electron traps further markedly enhanced the electron-hole pair separation efficiency and solar energy utilization, catalyzing NOR degradation efficiently. Electron Spin Resonance (ESR) confirmed the generation of reactive oxygen species, which was pivotal to the NOR degradation. This study underscores the potential of bimetallic composites for environmental remediation, particularly in treating antibiotic-laden wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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DOI
高影响因子
Journal of Materials Chemistry A
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2017
·Vol. 5
·期 43
·22772-22781
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IF 8.867
Piyong Zhang,Ting Song,Tingting Wang,Heping Zeng
The field of photocatalytic hydrogen evolution has almost exclusively concentrated on semiconductor photocatalysts, with few reports of non-semiconductor photocatalytic systems due to the small number of non-semiconductor catalysts and their poor photocatalytic ability. Herein, dendrite-like plasmonic CuNi bimetal was prepared by a hydrothermal method, followed by modification with reduced graphene oxide (rGO) nanosheets to facilitate the separation of the electron–hole pair and improve the photocatalytic H2 evolution rate. The electron–hole pair originates from the surface plasmon resonance (SPR) effect of Cu in CuNi bimetal. Importantly, a near-infrared photocatalytic activity was confirmed with monochromatic light irradiation at a wavelength of 800 and 900 nm in the photocatalytic system due to the broad-spectrum response of plasmonic Cu. In addition, this photocatalyst exhibited favorable stability and repeatability in five consecutive runs of accumulatively 30 h. This study provides a new and significant approach for the development of a non-semiconductor photocatalytic system, which could effectively broaden the scope of the photocatalyst field.
研究领域:
材料科学
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能源化学
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纳米技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Shishu Sun,Tianyi Sun,Dashuai Zhang,Jinrui Liu,Liying Ren,Chuilong Chen,Wei Yao,Zaifeng Shi
In this paper, the new CNQDs/CuNi/TiO 2-x composites were prepared successfully for the efficient photocatalytic degradation of tetracycline hydrochloride (TCH) under visible light. The CNQDs/CuNi/TiO 2-x composite, which combined carbon nitride quantum dots (CNQDs) and bimetallic CuNi nanoparticles with defective TiO 2-x , showed excellent photocatalytic properties. The upconversion property of CNQDs transformed lower-energy light into higher-energy photons, broadening the light absorption into the visible spectrum. Moreover, the CuNi nanoparticles enhanced charge carrier dynamics through surface plasmon resonance (SPR) effects, improving the photogenerated electron-hole separation efficiency. Under optimal conditions (pH = 9), the CNQDs/CuNi/TiO 2-x composite with 2 % CNQDs achieved the highest degradation efficiency. When the initial TCH concentration was 10 mg/L and the catalyst concentration was 200 mg/L, the degradation efficiency of TCH exceeded 95 % within 60 min. The composite exhibited superior photocatalytic performance and offered the optimal balance of light absorption and charge separation. This research advances the development of sustainable and highly effective photocatalytic materials, providing a promising approach for wastewater treatment and environmental purification.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Ying Wu,Wenhui Fang,Min Li,Yutao Cao,Wei Cui,Zengxi Li,Hong Zhao
Electrochemical upgrading of biomass waste (such as glycerol)-assisted water electrolysis for the production of valuable formate and high-purity hydrogen offers a promising route to develop sustainable and clean sources of energy. Herein, using a simple two-step electrodeposition method to implant CuNi alloy in VOx-doped Ni (NiVOx), we construct a competent, stable, and bifunctional heterogeneous catalyst (CuNi–NiVOx) toward hydrogen evolution reaction (HER) and glycerol electrooxidation reaction (GER). The CuNi–NiVOx electrode presents excellent HER activity with an ultralow overpotential of 8 mV in 1.0 M KOH to deliver a current density of 10 mA cm–2 and high GER activity for selective formate production with high Faradaic efficiency (FE). Moreover, the hybrid electrolytic cell formed by the bifunctional CuNi–NiVOx catalyst was able to reach a current density of 10 mA cm–2 with an ultralow voltage (1.308 V). X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations confirm the existence of electron transfer between the O sites and metal sites and between heterogeneous interfaces, thus optimizing the hydrogen adsorption ability (0.02 eV). This work may provide ideas for the engineering of heterogeneous dual-function electrocatalysts for energy-saving hydrogen production and simultaneous highly selective production of formate.
研究领域:
电化学
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催化
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能源材料
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可再生能源
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DOI
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Linchun Nie,Jiazhi Xia,Jiawei Liao,Na Liu,Meiling Xu,Dejing Meng,Wenjing Liu,Qingxiang Zhou,Chunmao Chen
In this work, polypyrrole-coated Cu, Ni co-doped ZIF-67 (PPy@CuNi-ZIF-67) was designed and prepared via a facile method. Calcined PPy@CuNi-ZIF-67 exhibited highly efficient oxidase-like activity and possessed excellent capacity to oxidize colorless 3,3′,5,5′-tetramethyl benzidine (TMB) into blue oxidation products (oxTMB) within 4 min. Glutathione (GSH) and sulfur-containing compounds can inhibit its oxidase-like activity. Based on this principle, an effective colorimetric method was developed in combination with a smartphone for efficient, sensitive, and visual detection of GSH. Under optimal conditions, good linearity was achieved in the range of 0.83–33.33 μM, and the visual detection limit was 0.27 μM. Moreover, based on the response difference of different sulfur-containing compounds to different chromogenic substrates, a new array sensor was constructed with three chromogenic substrates. The array sensor was proven to quickly distinguish five sulfur-containing compounds at a concentration as low as 8.3 μM in combination with principal component analysis and hierarchical clustering analysis.
研究领域:
生物化学
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食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
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2024
·Vol. 11
·期 8
·2479-2488
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IF 6.1
Yiwei Zhao,Chao Zhang,Shuangxi Xing,Zuhang Jin,Tingting Xiao
Biomass upgrading by electrochemical means is of great scientific significance due to the environmentally friendly procedures and low energy consumption costs. Herein, electro-oxidation (ECO) of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) and electro-reduction (ECR) to 2,5-furandimethanol (BHMF) with high yield have been studied on CuNi-based bimetallic catalysts. Ni(OH)2-NCF and Cu-NCF achieved 99% and 96.5% yields at a HMF concentration of 10 mM in ECO and ECR, respectively. During ECO, the presence of Cu2O in the catalyst facilitated the adsorption of HMF, and the formed NiOOH in its vicinity promoted the proton coupled electron transfer process and thus resulted in the fast capture and removal of H protons. The presence of Cu–O–Ni linkages in the Ni(OH)2-NCF electrocatalyst was beneficial for the formation of Ni3+ active sites. During ECR, the synergistic effect between Cu and Ni species also contributed to the generation and spillover of Hads species and then enhanced the reactivity.
研究领域:
电化学
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催化
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生物质转化
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材料科学
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DOI
高影响因子
DALTON TRANSACTIONS
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2022
·Vol. 51
·期 39
·15111-15120
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IF 4.569
Jiao Wang,Linlin Zhang,Yuanyuan Wang,Yongjian Niu,Dong Fang,Qingxiao Su,Cheng Wang
Electrocatalytic nitrate reduction offers a sustainable route to ammonia synthesis and wastewater treatment. However, the nitrate-to-ammonia conversion remains inefficient due to the sluggish kinetics and diverse side reactions. Herein, well-faceted CuNi nanocrystals with Ni-rich surfaces and favorable d-band centres were synthesized with the assistance of γ-cyclodextrin via a solvothermal process. When used as catalysts for nitrate electroreduction, they delivered an ammonia yield of 1.374 mmol h−1 mg−1 (0.5496 mmol h−1 cm−2) at −0.3 V with the faradaic efficiency and selectivity reaching 94.5% and 65.0%, respectively, surpassing pure Cu or Ni nanocrystals and most reported catalysts. Such excellent performances originated from the optimal geometric and electronic structures and special element distribution, which optimized the adsorption behaviors and accelerated the reaction kinetics. A NO3−–NO2−–NH3 pathway was proposed with the chemical process following the initial electron transfer process as the rate-determining step. This work sheds light on the design of efficient catalysts to achieve carbon neutrality through simultaneous geometric and electronic structure modulation.
研究领域:
材料科学
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催化
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环境化学
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电化学
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2020
·Vol. 49
·期 5
·1646-1651
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IF 4.174
Yajing An,Hamza Ijaz,Ming Huang,Jianqiang Qu,Shi Hu
The use of fuel cells is one of the most promising renewable energy strategies, but they still suffer from many limitations. The high mass enthalpy of hydrogen as a fuel comes at the cost of inconveniences and risks associated with storage, transportation and utilization, while the high performance of Pt catalysts in commercial fuel cells is limited by their high cost, low earth abundance, and poor stability as a result of CO intermediate poisoning. To circumvent these dilemmas, direct methanol fuel cells (DMFCs) were developed, using methanol as a fuel and Ni as the anode catalyst. Thanks to the condensed form of the fuel, DMFCs are considered as the most promising fuel-cell solution for portable electronic devices. Usually, other elements have to be introduced into Ni-based catalysts to modify the active sites to provide better alternatives to pristine Ni metal in terms of activity and stability. In this study, we provide a mild synthetic method for the preparation of CuNi alloy nanoparticles. The proper alloying ratio leads to the suitable modification of the electronic structure of Ni, which promotes the MOR catalytic reaction on the NiCu alloy. The NiCu alloy catalyst exhibits a mass current density of 1028 mA mgmetal−1 for the MOR at 1.55 V (vs. RHE), which is among the best values obtained from similarly prepared Ni-based catalysts.
研究领域:
材料科学
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电化学
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催化
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可再生能源
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Jun Zhang,Kaidong Shen,Chang Xu,Enci Wu,Tengfei Ding,Baohao Qian,Mengdie Cai,Jia-qi Bai,Qin Li,Jingshuai Chen,Chang-Jie Mao,Song Sun
Broadening the spectral response to visible light and improving charge carrier mobility are key to increasing the efficiency of wide-bandgap semiconductors in photocatalytic water splitting for hydrogen production. This study introduces a cost-effective photosensitive organic photocatalytic semiconductor, Fluorescein (FL, C 20 H 12 O 5 ), and synthesizes the FL-Cu 1 Ni 2.5 -TiO 2 hybrid using a combined impregnation-photodeposition and electrostatic self-assembly strategy. The incorporation of CuNi bimetallic materials reduces costs, while hybridizing the photosensitizer (PSS) with the photocatalyst (PC) improves interfacial compatibility. This organic-inorganic hybrid exhibits a broad-spectrum response via photosensitization (PSS-PC), achieving efficient and stable photocatalytic hydrogen evolution under visible light (207.14 µmol/h). Moreover, FL also acts as an organic semiconductor, facilitating full-spectrum photosensitization and spatial carrier separation through the heterostructure. The dual-channel mechanism further enhances photocatalytic hydrogen evolution. Additionally, DFT calculations highlight the significant activity differences of FL-Cu 1 Ni 2.5 -TiO 2 in various electron donor environments. This research offers a promising new approach for enabling traditional wide-bandgap semiconductors to perform efficient photocatalytic water splitting under visible light by constructing an organic-inorganic hybrid system.
研究领域:
材料科学
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能源化学
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光催化
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产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
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2025
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IF 2
Yue Sun,Kangping Cui,Haiyang Li,Wenming Wu
Electrochemical reduction is an efficient method for treating high-concentration nitrate wastewater, providing benefits such as enhanced controllability and the elimination of secondary pollution. In this study, the CuNi/NF electrode was fabricated by direct current electrodeposition of copper and nickel onto nickel foam, which served as the cathode for the electrochemical reduction of nitrate. The electrode demonstrated superior nitrate removal performance, achieving an NO₃−-N removal rate of 83% after 5 h of reaction at an initial concentration of 500 mg/L, significantly outperforming the Cu/NF electrode (76%) and Ni/NF electrode (57%). The influence of key operating parameters on nitrate reduction was systematically investigated. The results indicated that the electrode prepared with a deposition time of 20 min exhibited the highest removal efficiency. Under optimal conditions (current density of 25 mA/cm², Cl− concentration of 2 g/L, and initial pH of 7), the NO₃−-N removal rate reached 85%, with N₂ selectivity as high as 93.7%. The CuNi/NF electrode also exhibited good stability over five consecutive cycles. Finally, a plausible mechanism for nitrate reduction was proposed. This study provides fundamental data and theoretical support for the practical application of electrochemical methods in treating high-concentration nitrate wastewater.
研究领域:
环境科学
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电化学
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水处理技术
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Shan Li,Longlong Zhang,Bin Xu,Weihua Qin,Mengdan Wang,Bingli Pan,Hongyu Liu,Honggang Wang
Nanoparticles are of great significance to enhance tribological performances and can be employed as effective lubricant additives. 1T-MoS 2 has been widely applied in many fields. However, it is rarely studied in lubrication application. In this study, a novel core-shell lubricant additive was prepared by combining CuNi-MOF and 1T-MoS 2 via a facile hydrothermal method. The as-prepared CuNi-MOF@1T-MoS 2 exhibited a flower-like structure. Both experimental and theoretical calculation results showed the interlamellar interactions between the layered 1T-MoS 2 and CuNi-MOF sheets. Tribological properties of PEG200 containing CuNi-MOF@1T-MoS 2 were systematically investigated by a four-ball test machine. In comparison with PEG200, the friction coefficient and wear scar diameter were remarkably reduced by 56.8 % and 34.0 %, respectively. Therefore, the combination of 1T-MoS 2 and CuNi-MOF presents a promising candidate for enhancing the tribological properties of PEG200.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
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IF 3.375
Guangyuan Zhao,Danxin Hu,Shenghu Zhou,Jian Zhang,Lei Wang
A series of supported highly dispersed CuNi alloy nanocatalysts were fabricated by a coprecipitation method for the N-alkylation of aniline with 2,5-dihydroxymethylfuran under base-free conditions. Various characterizations and catalytic experiments were carried out to systematically investigate the relationship between the catalytic performance and synthetic parameters, such as calcination temperatures, reduction temperatures, and catalyst compositions. The optimized Cu3/17Ni6/17Al8/17O catalysts show good selectivity for the N-alkylation of aniline with 2,5-dihydroxymethylfuran under mild reaction conditions. This work broadens the application of non-noble bimetallic nanocatalysts for N-alkylation reactions and opens new opportunities to synthesize useful HMF derivatives and other valuable biobased chemicals.
研究领域:
化学工程
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催化化学
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生物质化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）