CATALYSIS LETTERS
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2025
·Vol. 155
·期 6
·1-14
·
IF 2.4
Yang Ke,Zhou Bo,Dong Kun,Wu Yan,Huang Qu,Lv Jingbo,Wan Ziyi,Yang Mingzhu
With the acceleration of industrialization and urbanization, the treatment of organic pollutants in water bodies has become a global problem. Photocatalytic technology is regarded as an ideal solution due to its green and efficient characteristics. However, traditional powder catalysts have the problem of difficult recovery. Using copper foam as the substrate to load photocatalysts is a feasible solution. Cu/CuO/Cu 2 O with a core–shell structure was prepared by a simple solvothermal method based on copper foam. Under visible light irradiation, the Cu/CuO/Cu 2 O catalyst has a high catalytic efficiency for Congo red (95% within 180 min) and a significant adsorption and degradation ability for tetracycline hydrochloride. The results of the density functional theory calculation and electrochemical tests reveal that a Schottky heterojunction forms between Cu 2 O and CuO, the band gap of Cu 2 O is 0.57 eV, and the free energy of Cu/CuO/Cu 2 O is 0.24 eV, close to 0 eV, revealing the ternary composite’s possibility to evolve hydrogen. The heterojunction generated by Cu 2 O and CuO improves the material’s charge transport efficiency. Furthermore, this ternary composite based on copper foam easy to recycle and reuse, and can maintain nearly 90% degradation efficiency after 8 cycles. This concept offers a method for planning and building interfaces in nanocomposite structures. Graphical
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF CATALYSIS
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2021
·
IF 7.92
Zhenhua Zhang,Liping Fan,Weiqi Liao,Feiyue Zhao,Cen Tang,Jing Zhang,Ming Feng,Ji-Qing Lu
Several CeO 2 -CuO/Cu 2 O nanocomposites with different CuO structures were used to identify the structure sensitivity of CuO in the CeO 2 -CuO/Cu 2 O catalyzed CO oxidation. The CO oxidation catalyzed by various CuO-CeO 2 interfacial sites involves a typical Mars-van Krevelen mechanism, in which the CuO-CeO 2 interfaces in the CeO 2 -CuO/c-Cu 2 O (cubes) nanocomposites are more intrinsically active, exhibiting ca. 15 kJ mol −1 lower activation energy than those in the CeO 2 -CuO/o-Cu 2 O (octahedra) and CeO 2 -CuO/d-Cu 2 O (rhombic dodecahedra) nanocomposites at CeO 2 loadings no less than 0.75 wt%. The higher activity is relevant to lower coordinated oxygen ions on CuO/c-Cu 2 O surface and thus better CO reactivity for the CeO 2 -CuO/c-Cu 2 O nanocomposites, which therefore indicates that the active oxygen species on CuO-CeO 2 interface should come from CuO rather than CeO 2 . Moreover, a highly active 13.2 %CeO 2 -CuO/c-Cu 2 O(s) catalyst for CO oxidation is realized on fine Cu 2 O cubes, which thus has high density of active sites.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
Science China-Chemistry
·
2020
·Vol. 63
·期 7
·1012-1018
·
IF 6.356
Guo Xiaoxi,Wu Jinghua,Xia Lian,Xiang Meihao,Qu Fengli,Li Jinghong
Photoelectrochemical (PEC) biosensors have shown great promise in bioanalysis and diagnostic applications in recent years. In this work, the CuO/Cu 2 O nanowire array (CuO/Cu 2 O Nanowire) supported on copper foam was prepared as a photocathode for detection of tyrosinase though quinone-chitosan conjugation chemistry method. The in-situ generated quinones that were the catalytic product of tyrosinase acted as electron acceptors, which were captured by the chitosan deposited on the surface of the electrode. Direct immobilization of electron acceptor on the electrode surface improved the photocurrent conversion efficiency and thus sensitivity. The as-prepared biosensor can realize a rapid response in a wide linear range of 0.05 U/mL to 10 U/mL with the detection limit as low as 0.016 U/mL of tyrosinase. The current work provides a new perspective to design and develop highly sensitive and selective PEC biosensor.
研究领域:
生物分析
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诊断技术
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光电化学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 8
·3349-3356
·
IF 4.569
Lixin Zhang,Congli Wang,Hongfang Jiu,Qianwen Xu,Xin Li,Wei Song,Shiyu Luo,Jiahui Zhao
It is of pivotal significance to probe highly efficient, cost-effective and low-cost catalysts for the hydrogen evolution reaction. Herein, a closely packed carbon-encapsulated CuO/Cu2O heterohedron with a heterojunction structure is reported that combines chemical etching and thermal oxidation processes. CuO/Cu2O@C-10 has remarkable catalytic activity for HER with an overpotential of 121 mV at a current density of 10 mA cm−2 and a Tafel slope of 81.58 mV dec−1, along with excellent stability in alkaline media under optimal conditions. Benefiting from CuO/Cu2O nanoparticles embedded in a carbon matrix, it forms a porous heterohedron structure by a close packing mode, owing to the unique CuO/Cu2O heterostructure with an ultrathin coated carbon layer and an interconnected conductive carbon network structure. These characteristics make a great contribution to the massive number of active interfacial sites, alleviating the aggregation of active substances, enhancing ion diffusion and the conductivity of the materials. This facile strategy sheds new light on a rational synthesis for a highly efficient hydrogen evolution catalyst with a heterostructure.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2022
·
IF 6.14
Ya Lu,Zhuanfang Bi,Guangyi Shang
Detection of trace carbendazim in agricultural products or environment is challenging but important for human health and environmental protection. Developing a sensitive and recyclable surface-enhanced Raman scattering (SERS) substrate is one of the effective methods to detect such pesticide residues. In this work, we developed a facile method to fabricate a three-dimensional cactus-like Ag nanoparticles/CuO/Cu2O nanocomposite (CACN) based on a galvanic replacement reaction between Tollens’ reagent and Cu foam. This design combined the Raman enhancement effect and photocatalytic activity, providing a multifunctional and reusable substrate for highly sensitive SERS detection. It was found that the enhancement and photocatalysis of the CACN substrate were closely related to the concentration of Tollens’ reagent, and the 10-CACN substrate (prepared at 10 mM) demonstrated excellent sensitivity, reproducibility, and recyclability. The substrate was successfully applied for the detection of carbendazim solution with a detection limit of 1.5 × 10–10 M and could be reused up to 7 times. More importantly, the substrate can be employed for the detection of trace carbendazim in real apple peels with a detection limit of ∼8.5 × 10–4 ppm, which is far below that of 2.0 × 10–1 ppm suggested by China, United Kingdom, and European Union. These results suggest that the facile fabrication method and the excellent substrate would facilitate the SERS technology closer to practical application in the detection of pesticide residues.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
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2020
·Vol. 187
·期 6
·1-9
·
IF 6.232
Li Xiaomeng,Kong Weisu,Qin Xia,Qu Fengli,Lu Limin
A facile and sensitive self-powered cathodic photoelectrochemical (PEC) aptasensor is reported for the detection of prostate-specific antigen (PSA) based on CuO-Cu 2 O nanowire array grown on Cu mesh (CuO-Cu 2 O NWA/CM) as electrode. The mixed narrow band gaps of the CuO-Cu 2 O heterostructure ensured its wide absorption band, effective electron/hole separation, and high photocatalytic activity in the visible region. In addition, nanowires directly grown on the substrate provided high specific surface area and exposed abundant active sites, thus guaranteeing its high photocatalytic efficiency. Therefore, the self-powered sensor exhibited favorable analytical performance with fast response, wide linear ranges of 0.01 to 5 ng/mL and 5 to 100 ng/mL, an acceptable detection limit of 3 pg/mL, and reasonable selectivity and stability. The proposed CuO-Cu 2 O NWA/CM can be considered a promising visible light-responsive photoactive material for fabrication of PEC aptasensor with high performance.
a Schematic illustration of construction process of PEC sensing platform based on the CuO-Cu 2 O composite for PSA detection. b Schematic mechanism of the operating PEC system.
研究领域:
分析化学
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生物传感器
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纳米材料
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癌症诊断
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2025
·
IF 17.7
Hong-Rui Zhu,Xi-Lun Wang,Juan-Juan Zhao,Meng-Han Yin,Hui-Min Xu,Gao-Ren Li
Plastics are ubiquitous in human life and pose certain hazards to the environment and human body. The increasing amount of CO 2 in the atmosphere will lead to the greenhouse effect. Therefore, it is urgent to treat microplastic waste and CO 2 by using environmentally friendly and efficient technologies. In this work, we developed an efficient photoelectrocatalytic system composed of Ni single atoms (Ni SAs) supported by P, N-doped amorphous NiFe 2 O 4 (Ni SAs/A-P-N-NFO) as anode and Ag nanoparticles (Ag NPs) supported by CuO/Cu 2 O nanocubes (Ag NPs@CuO/Cu 2 O NCs) as cathode for microplastic oxidation and CO 2 reduction. The Ni SAs/A-P-N-NFO was synthesized by calcination-H 2 reduction method, and it achieved a Faraday efficiency of 93% for the oxidation reaction of poly (ethylene terephthalate) (PET) solution under AM 1.5 G light. As a photocathode, the synthesized Ag NPs@CuO/Cu 2 O NCs was utilized to reduce CO 2 to ethylene and CO at 1.5 V vs . RHE with selectivity of 42% and 55%, respectively. This work shows that the photoelectrocatalysis, as an environmentally friendly technology, is a feasible strategy for reducing the environmental and biological hazards of light plastics, as well as for efficient CO 2 reduction.
研究领域:
环境科学
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材料科学
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电化学
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纳米技术
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催化
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产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2018
·Vol. 124
·期 10
·1-8
·
IF 1.604
Mo Xi,Hu Jiamin,Shen Hui,Shui Lingling,Shu Dong,He Junfeng,He Guannan,Wang Yinzhen,Li Wei,He Qinyu
In photocatalyst design, the rapid recombination of photo-generated electron–hole pairs in the bulk or on the surface of semiconductors is a major limiting factor in achieving high photocatalytic efficiency, which is a key scientific issue. Surface modification is used to change the surface properties of photocatalyst related to dark adsorption and photocatalytic efficiency. In this work, micro-sized CuO powder was surface modified by in situ-growing heterojunctions CuO/Cu 2 O and CuO/Cu 2 O/Cu when simply calcinating a mixture of CuO and urea, in which urea acted as a reducing agent. The phases, microstructure, composition, photogenerated carrier lifetime, dark adsorption rate, photodegradation rate, and surface charges of the as-modified powder were investigated. The surface modification was found to change the negative surface charge of micro-sized CuO to a positive one, resulting in enhanced dark adsorption (nearly twice that of pristine CuO). Furthermore, the surface modification prolonged the photogenerated carrier lifetime, which in turn enhanced the photocatalytic efficiency. Overall, this work implies that the electric properties of surface charges and carrier lifetime can be altered by constructing an appropriate heterojunction on the surface of the photocatalyst.
研究领域:
材料科学
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光催化
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表面化学
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半导体物理
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环境功能材料
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纳米科技
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Lulu Pang,Haoran Li,Zhong Qi,Yaxin Liu,Yandan Du,Peng Pan,Huayi Li,Jie He,Hong Dong,Yahui Cheng,Rui Zhang,Zhengchun Yang
Nitrite is a widespread contaminant in environmental and food systems, and its excessive intake poses significant risks to human health, creating an urgent need for sensitive and robust detection technologies. The performance of conventional electrochemical sensors is often limited by the limited conductivity, aggregation tendency, and interfacial instability of copper-oxide-based materials. A CuO/Cu 2 O/C composite electrode was developed through controlled thermal treatment, where mixed-valence copper oxides are integrated into a conductive carbon framework to address these intrinsic limitations. The optimized CuO/Cu 2 O/C electrode exhibits outstanding electrocatalytic performance toward nitrite oxidation, delivering a broad linear range (2 μM–5000 μM), high sensitivity (52.32 μA μM −1 cm −2 ), and a low detection limit (0.101 μM). The results indicate that the prepared CuO/Cu 2 O/C composite material promotes charge separation and transfer through the heterojunction interface, utilizing the Cu 2+ /Cu + redox couple to provide abundant active sites. Moreover, the carbon substrate not only improves conductivity, inhibits particle aggregation, and increases the electrochemical active area, but also optimizes the oxidation state of copper to the Cu 2+ /Cu + redox pair. These findings provide a promising materials platform and meaningful guidance for the rational design of copper-oxide-based composites tailored for high-performance electrochemical sensing.
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DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
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2020
·Vol. 22
·期 5
·1-7
·
IF 2.132
Yuan Wenjing,Wu Yaoyao,Wang Xiaodan,Fang Chihhsiang,Wang Yingfei,Liu Xun
Developing a facile strategy for the construction of advanced electrocatalysts to accelerate oxygen evolution kinetics to meet the needs of new energy conversion technologies is highly desirable. Herein, a novel and facile route is devised to grow the amorphous Ru x O y on CuO/Cu 2 O nanowire arrays. Experimental results show that the typical product displays an outstanding electrocatalytic oxygen evolution activity involving a low overpotential of 236 mV at 20 mA cm −2 and an excellent durability. The reasons for which is associated with the synergistic effect of amorphous Ru x O y and CuO/Cu 2 O nanowire arrays, as well as the existence of abundant oxygen vacancies. This study exhibits new insights into using the composite of amorphous Ru x O y and copper (Cu)–based oxides as high-activity catalysts for oxygen evolution.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xin Ban,Jiamu Li,Wenwen Sun,Aijia Sun,Huayi Li,Zhengchun Yang,Peng Pan,Jie He,Rui Zhang,Yang Zhao
A highly sensitive non-enzymatic glucose electrode based on truncated octahedral CuO-modified Cu 2 O@Cu composite was fabricated by a simple hydrothermal method combined with a two-step liquid-phase reduction process. Research on utilizing nanostructures to increase the contact opportunities between electroactive materials and target analytes, thereby enhancing electrocatalytic activity, is currently insufficient. In this study, we employed a reduction method to create a core–shell structure with copper shells encapsulating internal nanomaterials. This structure was designed to provide more active sites for glucose molecules, thereby enhancing the electrocatalytic response current of glucose. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the morphology and components of the products obtained from each step, while the CuO/Cu 2 O@Cu ternary composites were specifically analyzed using transmission electron microscopy (TEM). For glucose detection, CuO/Cu 2 O@Cu composite was modified onto a glassy carbon electrode (GCE) as a working electrode for electrochemical performance testing. The cyclic voltammetry (CV) test results indicate that the CuO/Cu 2 O@Cu-GCE electrode exhibits a sensitivity of 771 μA cm −2 mM −1 within the glucose concentration range of 0 to 10 mM, with a detection limit of 3.39 μM. Chronoamperometry (CA) results demonstrate that the electrode achieves a sensitivity of 1067 μA cm −2 mM −1 in the glucose concentration range of 0 to 1 mM, with a detection limit of 0.56 μM. Exhibiting a broad linear response range, high sensitivity, minimal detection limit, and robust selectivity against common interferents, the electrode maintained 99 % stability over four days and retained more than 85 % of its current response for two weeks, also showing notable sensitivity in artificial sweat samples. Owing to its simple fabrication, cost-effectiveness, and outstanding electrochemical properties, the CuO/Cu 2 O@Cu composite offers significant potential for application in non-enzymatic glucose sensing.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Jian Lv,Chuncai Kong,Yun Xu,Zhimao Yang,Xiaojing Zhang,Shengchun Yang,Ge Meng,Jinglei Bi,Jianhui Li,Sen Yang
Design and synthesis of binder-free electrodes with active nanomaterials on the surface are expected to enhance electrochemical properties. In the work, a novel thin film formed by assembled CuO nanosheets and ultra-thin Cu 2 O film directly adhered on copper foil was obtained by just simply oxidizing the Cu foil using H 2 O 2 . The obtained product on Cu foil consists of a film assembled by CuO/Cu 2 O nanosheets. The ultrathin CuO nanosheets with large surface area provide adequate active sites for the electrocatalysis and the strong binding will promote the electron transfer between active nanomaterials and Cu substrate. The electrochemical performance shows that this novel structure as an electrode exhibits excellent properties for the non-enzyme glucose sensor, with an ultrahigh sensitivity of 1.541 mA mM −1 cm −2 , a low detection limit of 0.57 μM and the linear range is up to 4 mM. Good stability and high selectivity were also obtained by using CuO/Cu 2 O nanosheets@Cu as a nonenzymatic glucose sensor, and furthermore, the electrode shows powerful reliability for analyzing human serum samples. Therefore, the CuO/Cu 2 O film based on Cu foil binder-free electrode may become a promising nonenzymatic glucose sensor and the work also provides a strategy for the design of electrochemical electrode.
研究领域:
生物医学工程
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纳米医学
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电化学传感
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糖尿病监测
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转化医学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）