ACS Omega
·
2021
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IF 3.512
Ratul Rehman,Sudip Kumar Lahiri,Ashraful Islam,Peng Wei,Yue Xu
A novel copper-based catalyst supported by a long-chain hydrocarbon stearic acid (CuxO@C18H36O2) was synthesized by a hydrothermal method and double replacement reactions. The as-prepared catalyst is shown as self-assembled hierarchical nanoflakes with an average size of ∼22 nm and a specific surface area of 51.4 m2 g–1. The catalyst has a good performance on adsorption as well as Fenton-like catalytic degradation of Rhodamine B (RhB). The catalyst (10 mg/L) showed an excellent adsorption efficiency toward RhB (20 mg/L) for pH ranging from 5 to 13, with the highest adsorption rate (99%) exhibited at pH 13. The Fenton-like catalytic degradation reaction of RhB (20 mg/L) by CuxO@C18H36O2 nanoflakes was effective over a wide range of pH of 3–11, and •OH radicals were generated via Cu2O/H2O2 interactions in acidic conditions and CuO/H2O2 reactions in a neutral solution. The highest efficiency catalytic degradation of RhB (20 mg/L) was 99.2% under acidic conditions (pH = 3, H2O2 = 0.05 M), with an excellent reusability of 96% at the 6th cycle. The results demonstrated that the as-prepared CuxO@C18H36O2 nanoflakes are an efficient candidate for wastewater treatment, with excellent adsorption capacity and superior Fenton-like catalytic efficiency and stability for RhB.
研究领域:
材料科学
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环境科学
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化学工程
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纳米技术
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DOI
PubMed
高影响因子
Small Methods
·
2021
·Vol. 5
·期 7
·2100423
·
IF 14.188
Mingzhe Shao,Dapeng Liu,Baolin Yan,Xilan Feng,Xiaojuan Zhang,Yu Zhang
Inorganic nanomaterials have attracted much attention as enzyme mimics because of simple and stable spatial conformation of those artificially synthesized nanocatalysts. Cu 2 O, as an important kind of narrow band gap semiconductor, is identified as effective as visible-light-driven photocatalysts, which can catalyze decomposition of H 2 O 2 into reactive oxygen species. Moreover, after forming Cu x O/CeO 2 hybrids, the strongly coupled interface between the two components will further improve their catalytic performance. In this paper, the authors try to construct FTO/TiO 2 /Cu x O/CeO 2 (1 < x < 2) nanohybrids with such a kind of active interface via a layer-by-layer electrodeposition strategy by aid of the following surface etching process. It is found that FTO/TiO 2 /Cu x O/CeO 2 exhibits good peroxidase mimic activity in the dark but much better performance under visible light irradiation (λ ≥ 420 nm) during catalytic oxidation of 3,3′,5,5′-tetramethylbenzidine substrates in the presence of H 2 O 2 . Detailed characterizations disclose that the construction of TiO 2 /Cu 2 O pn-heterojunctions do effectively accelerate separation of photogenerated carriers, and the formation of a highly active Cu x O/CeO 2 interface is synergistically favorable for selectively generating singlet oxygen to boost the catalytic performance of FTO/TiO 2 /Cu x O/CeO 2 .
研究领域:
材料科学
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催化化学
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纳米技术
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2016
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IF 7.145
Juan Yang,Huili Ye,Faqiong Zhao,Baizhao Zeng
A novel core–shell heterostructure of CuxO nanoparticles@zeolitic imidazolate framework (CuxO NPs@ZIF-8) was successfully prepared through facile pyrolysis of a nanocrystalline copper-based metal–organic framework [nHKUST-1, i.e., Cu3(BTC)2 (BTC = 1,3,5-benzene-tricarboxylate)]@ZIF-8, based on the different thermal stability of the two metal–organic frameworks (MOFs). The small CuxO NPs derived from nHKUST-1 were uniformly dispersed inside the host material and provided active sites, while ZIF-8 kept the original structure as the molecular sieving shell. Owing to the proper pore shape and pore size of ZIF-8, H2O2 could diffuse through the shell, but bigger molecules could not pass. Thus, the composite material exhibited high selectivity when it was used to construct a H2O2 sensor. In addition, the sensor showed an extended linear detection range (from 1.5 to 21442 μM), low detection limit (0.15 μM), and high sensitivity, due to the good electrocatalysis of CuxO NPs and the synergistic effect of the core–shell structure.
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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分析化学
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zixin Xie,Xihong Zu,Qianwei Lai,Yicheng Cao,Xueqing Qiu
Hydrogen production by biomass electrolysis offers a promising and sustainable route for producing green hydrogen and high-value utilization of biomass. However, this process consumes electricity and suffers from low anode Faraday efficiency of the organic electro-oxidation reaction. Herein, we develop a novel strategy that integrates a room-temperature, high-power lignin-derived aldehyde flow fuel cell (FFC) with hydrogen production, which converts the power-consuming electrocatalytic hydrogen production step into an electricity-generating process. The highly active Ag-Cu x O/CF (copper foam) electrocatalyst exhibits dual functionality of efficient electricity generation and simultaneous hydrogen production by catalyzing low-potential aldehyde group oxidation at the anode, which concurrently releases electrons and generates hydrogen. The Ag-Cu x O/CF electrocatalyst can significantly improve the electron transfer rate and catalytic conversion efficiency of the anode, attributable to its mixed Cu 0 /Cu + valence states, enlarged double-layer capacitance (C dl ), reduced interfacial resistance, and optimized adsorption capacity. The Ag-Cu x O/CF catalyst achieves ∼95 % benzaldehyde conversion and ∼98.4 % Faradaic efficiency for hydrogen production at 0.35 V RHE . Furthermore, the FFC based on Ag-Cu x O/CF electrocatalyst demonstrated excellent dual-functionality at room temperature, achieving both a power density of 173.5 mW cm −2 and a hydrogen production rate of 1.96 mmol cm −2 h −1 . The constructed FFC achieved a room-temperature power density threefold greater than the reported lignin-based power generation technology, while maintaining comparable hydrogen production rate to biomass electrolysis processes. This study provides a novel approach to reduce the cost of green hydrogen production and mitigate the global energy crisis.
研究领域:
电催化
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能源化学
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可再生能源
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氢能源
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生物质转化
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环境能源材料
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DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xinyu Wang,Wenbin Wang,Meng Gao,Hao Yu,Min Fu,Wei Chen
A molecularly imprinted electrochemical sensor was designed for the quantitative and efficient detection of melatonin (MT) based on a CuxO/MXene modified screen-printed carbon electrode (MIP/CuxO/MXene/SPCE). Herein, the CuxO/MXene nanocomposite was prepared via a hydrothermal method. The CuxO was uniformly dispersed on the surface and the interlayers of the MXene, forming hybrid heterostructures. The encapsulated CuxO increased the interlayer distance of the MXene matrix to bring more active sites and accelerated the oxidation reaction of melatonin molecules, and thereby the electrochemical response of the sensor was improved. The MIP was constructed by electropolymerization of o-phenylenediamine (o-PD) in the presence of MT on the surface of the CuxO/MXene/SPCE. The morphology and chemical composition of the hybrid film were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy; the electrochemical behaviors of the sensor were evaluated by cyclic voltammetry and electrochemical impedance spectroscopy. Under the optimal conditions, the MIP/CuxO/MXene/SPCE sensor had a wide linear detection range of 5–700 μM and a low detection limit of 0.029 μM (S/N = 3) for MT. The sensor also showed excellent selectivity, reproducibility, and stability. Finally, it was successfully applied for MT detection in human urine with satisfactory recovery. Overall, this study provided a sensitive and efficient strategy for the determination of MT.
研究领域:
分析化学
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纳米技术
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电化学
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生物传感器
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DOI
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2019
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IF 1.411
Huijun Liu,Zhen Lu,Jun Qin,Kewei Wang,Feng Feng,Yong Guo
CuxO@polypyrrole nanofibre (PpyNF) composites were synthesized by a simple and fast microwave method. The samples were characterized using X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy; galvanostatic charge–discharge tests, cyclic voltammetry and electrochemical impedance spectroscopy were also conducted. The PpyNF composites showed a maximum specific capacitance of 464.6 F g−1 at 0.5 A g−1 with excellent cyclability (95.6% capacitance retention after 2,000 cycles at 1 A g−1), thereby demonstrating their excellent potential for application to supercapacitors. An asymmetric supercapacitor based on CuxO@PpyNF//active carbon revealed a maximum gravimetric energy density of 12.50 Wh kg−1 and power density of 0.38 kW kg −1.
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
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IF 3.7
Jian Zhang,Jieqiong Zhao,Caifeng Qi,Zhe An,Yanru Zhu,Xin Shu,Hongyan Song,Jing He
Oxidative carbonylation of ethanol to diethyl carbonate (DEC), an essential electrolyte for lithium-ion battery, has attracted broad interest from both academia and industry in recent years. But high selective formation of DEC is a great challenge due to the difficulty in efficient activation of CO at the same time as the site-specific activation of O—H bond in ethanol. Herein, we propose a Pd-Cu x O synergetic catalysis toward oxidative carbonylation of ethanol, where the synergy between Pd and Cu x O promotes CO activation and carbonylation, thus increasing the selectivity to the site-specific activation of O-H bond in ethanol. A nitrogen-doped carbon nanotubes supported Pd-Cu x O (Pd-Cu x O/NCNTs) has been designed via galvanic displacement of Pd on Cu x O to form the strong interactions between Pd and Cu x O, affording a selectivity of 94.7 % to DEC and a space-time yield (STY) of up to 5966 mg∙g –1 ∙h –1 , which is an order of magnitude higher than that reported in the literatures. This work offers novel insights for the design of highly efficient catalysts and advances the industrial development for the oxidative carbonylation of ethanol.
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高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Yudie Lv,Yang Yang,Jiaxin Niu,Xu Sun,Han Zhang,Xiangdong Kong
Oxidative stress is closely linked to androgenetic alopecia (AGA). However, research on antioxidants specifically targeting hair follicle tissue has been limited. The utilization of nanomaterials that possess superior reactive oxygen species (ROS)-scavenging capabilities and biocompatibility is a promising approach for the treatment of AGA. The microneedle-mediated transdermal delivery system can overcome the limitations of the stratum corneum and effectively deliver functional nanomaterials to the vicinity of hair follicles. In this study, we report a degradable microneedle patch loaded with ROS-scavenging CuxO nanozyme (CuxO-MNs) for targeted treatment of AGA. Tiny CuxO nanozymes were synthesized using a robust and eco-friendly method, demonstrating effective ROS-scavenging ability at both in vitro and cellular levels. With the penetration and dissolution of sodium hyaluronate microneedles, CuxO can be rapidly released and effectively reach the area around the hair follicle, enabling targeted removal of ROS. In the AGA model, CuxO-MNs effectively alleviate oxidative stress, restore the hair follicle microenvironment, and stimulate the transition of hair follicles from the telogen to the anagen. These combined effects significantly enhance hair regeneration and exhibit therapeutic efficacy comparable to the clinical drug minoxidil, suggesting the safety and translational potential of this strategy for AGA treatment.
研究领域:
生物医学工程
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皮肤病学
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纳米技术
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药剂学
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DOI
PubMed
高影响因子
Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-15
·
IF 31.6
Pan Yexin,Yu Ruohan,Jiang Yalong,Zhong Haosong,Yuan Qiaoyaxiao,Lee Connie Kong Wai,Yang Rongliang,Chen Siyu,Chen Yi,Poon Wing Yan,Li Mitch Guijun
Electronic waste (e-waste) and diabetes are global challenges to modern societies. However, solving these two challenges together has been challenging until now. Herein, we propose a laser-induced transfer method to fabricate portable glucose sensors by recycling copper from e-waste. We bring up a laser-induced full-automatic fabrication method for synthesizing continuous heterogeneous Cu x O (h-Cu x O) nano-skeletons electrode for glucose sensing, offering rapid (< 1 min), clean, air-compatible, and continuous fabrication, applicable to a wide range of Cu-containing substrates. Leveraging this approach, h-Cu x O nano-skeletons, with an inner core predominantly composed of Cu 2 O with lower oxygen content, juxtaposed with an outer layer rich in amorphous Cu x O (a-Cu x O) with higher oxygen content, are derived from discarded printed circuit boards. When employed in glucose detection, the h-Cu x O nano-skeletons undergo a structural evolution process, transitioning into rigid Cu 2 O@CuO nano-skeletons prompted by electrochemical activation. This transformation yields exceptional glucose-sensing performance (sensitivity: 9.893 mA mM −1 cm −2 ; detection limit: 0.34 μM), outperforming most previously reported glucose sensors. Density functional theory analysis elucidates that the heterogeneous structure facilitates gluconolactone desorption. This glucose detection device has also been downsized to optimize its scalability and portability for convenient integration into people’s everyday lives.
研究领域:
材料科学
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生物医学工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
SENSORS
·
2023
·Vol. 23
·期 2
·695
·
IF 3.9
Zhipeng Yu,Huan Wu,Zhongshuang Xu,Zhimao Yang,Jian Lv,Chuncai Kong
Designing highly active material to fabricate a high-performance noninvasive wearable glucose sensor was of great importance for diabetes monitoring. In this work, we developed CuxO nanoflakes (NFs)/Cu nanoparticles (NPs) nanocomposites to serve as the sensing materials for noninvasive sweat-based wearable glucose sensors. We involve CuCl2to enhance the oxidation of Cu NPs to generate Cu2O/CuO NFs on the surface. Due to more active sites endowed by the CuxO NFs, the as-prepared sample exhibited high sensitivity (779 μA mM−1cm−2) for noninvasive wearable sweat sensing. Combined with a low detection limit (79.1 nM), high selectivity and the durability of bending and twisting, the CuxO NFs/Cu NPs-based sensor can detect the glucose level change of sweat in daily life. Such a high-performance wearable sensor fabricated by a convenient method provides a facile way to design copper oxide nanomaterials for noninvasive wearable glucose sensors.Keywords:noninvasive wearable sensing;metal oxide;sweat glucose detection
研究领域:
生物医学工程
·
材料科学
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DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Zhang Gongguo,Ma Yanyun,Liu Feng,Tong Zhibo,Sha Jingquan,Zhao Wenjun,Liu Maochang,Zheng Yiqun
We report a facile synthesis of Au@CuxO core–shell mesoporous nanospheres with tunable size in the aqueous phase via seeded growth. The success of the current work relies on the use of a halide-free copper (Cu) precursor and n-oleyl-1,3-propanediamine as a capping agent to facilitate the formation of a copperish oxide shell with a mesoporous structure and the presence of mixed oxidation states of Cu. By varying the amount of spherical Au seeds while keeping other parameters unchanged, their diameters could be readily tuned without noticeable change in morphology. As compared with commercial Cu2O, the as-prepared Au@CuxO core–shell mesoporous nanospheres exhibit the higher adsorption ability, enhanced activity, and excellent stability toward photocatalytic degradation of methyl orange (MO) under visible light irradiation, indicating their potential applications in water treatment.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2020
·Vol. 24
·期 3
·583-590
·
IF 2.646
Yu Zhipeng,Kong Chuncai,Lv Jian,Ma Bo,Zhang Xiaojing,Yang Zhimao
Designing highly active material to fabricate high-performance glucose sensor was great importance for diabetes treatment. In this work, we develop a novel nanocomposite composed of multilevel nanostructure with ultrathin Cu x O nanoflakes anchored on Cu 2 O nanowires, directly on Cu foil and its application as non-enzymatic glucose sensor. Due to more active sites endowed by the ultrathin Cu x O nanoflakes, the as-prepared Cu x O nanoflakes/Cu 2 O nanowires@Cu nanoarray exhibit high sensitivity (3.59 mA mM −1 cm −2 ), low detection limit (0.69 μM), high selectivity, fast amperometric response (~ 2 s) and excellent reliability in human serum. And the sensitivity of ultrathin Cu x O nanoflakes/Cu 2 O nanowires@Cu nanoarray was 1.9-fold than that of Cu 2 O nanowires@Cu nanoarray. Such novel multilevel nanoarray synthesized by convenient method provides a facile way to design metal oxide nanomaterial for promising non-enzymatic glucose sensor.
研究领域:
材料科学
·
纳米技术
·
分析化学
·
生物医学工程
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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）