ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Ying Xu,Jiaxiang Ma,Yu Han,Jingjing Zhang,Fuyi Cui,Ying Zhao,Xin Li,Wei Wang
Pure water production by solar distillation under no light concentration is attracting ever greater attention in the rural area with electricity limit due to its constant energy input. Meanwhile, the polluted raw water in these areas also lacks effective decontamination treatment. Rather than relying on external steps for decontamination process, photothermal materials with pollutant removal ability would have better water cleaning performance. Here, we designed a multifunctional photothermal material based on a copper mesh with abundant CuO nanowires. This CuO nanowire mesh exhibited a high solar absorption of 93% and superhydrophilicity for water transport, contributing to a high solar vapor efficiency of 84.4% under one-sun illumination. Besides, the CuO nanowires possessed a great catalytic ability for the degradation of contaminants in raw water. Moreover, the diffusion inhibition test showed a clear antimicrobial effect of the CuO nanowire mesh on the bacteria. Hence, the as-prepared multifunctional CuO nanowire mesh allows for the incorporation of solar evaporation, pollutant degradation, and antibacterial action, which holds great application potential in the pure water production in solar distillation.
研究领域:
材料科学
·
环境科学
·
光热转换
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 37
·375603
·
IF 3.874
Chundong Liu,Jia Li,Fengcai Lei,Yisheng Wei,Zhen Li,Chao Zhang,Qianqian Peng,Jing Yu,Baoyuan Man
The surface-enhanced Raman spectroscopy (SERS) has attracted much attention due to the powerful capability of quantificational analysis. Nowadays, most of the enhancement effect by SERS substrate is provided by the 'hot spots' occupying relatively small space. When the amount of analyte is too low, it is difficult to ensure that all the probe molecules can be placed into the 'hot spots', which is a headache in SERS quatification. In order to solve this problem, we have developed a structure of CuO nanowires/Ag nanoparticles with wettability capacity difference, which can aggregate molecules in water and oil simultaneously under two different mechanisms. The limit of detection and enhancement factor of this structure are estimated as 10−15 M and 1.55 × 1011 respectively (for rhodamine 6G, R6G). In a proof-in-principle experiment of sewage detection, it successfully achieved the aggregation and additional enhancement of both the R6G molecules in aqueous solution and thiuram molecules in toluene, realizing efficient and accurate Raman detection.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Xun Zhou,Yongxiang Wu,Yao Jiang,Chen Li,Longping Xu,Peng Cui,Xinsong She
Integrated one–dimensional CuO–nanowire arrays/Cu–foam (CuO–NWAs/Cu–foam) nanostructure, which was fabricated by oxidation and calcination, has been newly utilized as non–enzymatic electrocatalytic electrode for exploring histamine level. Under optimal condition of pH at 13 and potential at 0.55 V ( vs Ag/Ag/Cl), the sensitivity of CuO–NWAs/Cu–foam electrode towards non–enzymatic electrochemical histamine determination presented as high as 12.94 mA mM −1 cm −2 , linear range spanned between 0.5 and 1046 μM, a detection limit (S/N = 3) was about 44 nM. The unprecedented causes of ultrahigh sensitivity were physically contributed to enhancing active surface area and declining charge transfer resistance. More crucially, the outstanding selectivity, stability and reproducibility facilitated its practical capacity on evaluating histamine levels in different–bacteria fermented mandarin fish, which triggered the potential feasibility for commercializing non–enzymatic electrochemical determination of histamine with high sensitivity, reliable precision and low expenditure.
研究领域:
生物传感
·
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Qinjun Sun,Shaolong Zhou,Xiaolei Shi,Xiaochun Wang,Liyan Gao,Zhanfeng Li,Yuying Hao
CuO nanowires (NWs) with the diameters ranging from 130 to 275 nm have been successfully prepared by electrospinning technique, followed by a calcination process. Inverted planar heterojunction perovskite solar cells (PSCs) with the structure of indium tin oxide/CuO NWs/poly(3,4-ethylenedioxythiophene) (PEDOT):poly(styrenesulphonate) (PSS)/CH3NH3PbI3/phenyl C61-butyric acid methyl ester/Bphen/Ag were designed, achieving a best power conversion efficiency (PCE) of 16.87%, which is 21% improvement compared to that of the control PSCs without CuO NWs. By the characterizations of an optical microscope, X-ray diffraction, and scanning electron microscopy, it was found that CuO NWs have uniform morphology and orderly arrangement. Electrochemical impedance spectrometry and external quantum efficiency were used to reveal the effect of CuO NWs on the performance of PSCs. Compared to ZnO NWs with the same diameters and quantitative analysis based on a simple model, we conclude that the improvement of PCE by about 13% can be ascribed to the increase of the PEDOT:PSS/CH3NH3PbI3 interface area and the remaining increase of 8% can be attributed to the higher hole mobility of the CuO NWs/PEDOT:PSS composite film. The results indicate that the efficiency of PSCs will have a significant enhancement when the optimal CuO NWs are introduced into the charge transport layer.
研究领域:
材料科学
·
能源研究
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 9
·097510
·
IF 4.386
Zhenting Zhao,Zibang Huang,Dafeng Long,Kai Li,Zhaohui Guo,Fanglong Zhu,Weiping Gong,Jie Hu
A kind of NiCo2O4-based hierarchically-nanostructured composites has been synthesized for electrooxidation of glucose. The Cu(OH)2 nanowires were initially growth in situ on the surface of Cu foam (CF) and wrapped with Ni-Co precursor (Ni-Co Pre) to prepare nanocomposites (Ni-Co Pre@Cu(OH)2 NWs/CF). Then, the obtained composites were annealed in air to form the NiCo2O4 nanosheets wrapped CuO nanowires nanostructures which were supported on the Cu foam (NiCo2O4@CuO NWs/CF). Because of the synergism of Ni, Co and Cu, as well as the enhanced surface area by hierarchical nanostructure, the as-prepared NiCo2O4@CuO NWs/CF sensor exhibits outstanding electrooxidation activity for glucose detection, including high sensitivity (7.98 μA/μM cm−2), wide linear range (1.0 × 10−3−2.0 mM), low detection limit (0.68 μM) and fast response/recovery times (1.3/2.0 s). Meanwhile, the as-fabricated sensor also possesses good reproducibility, flexibility, selectivity and long-term stability, which is a promising platform for glucose electrooxidation and determination in serum sample.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Chengxu Lin,Chunhua He,Jianbin Lin,Chenyu Li,Bo Sun,Shilong Peng,Lingxian Kong,Shuang Xi,Zhiyong Liu,Guanglan Liao,Tielin Shi
Humidity sensor is crucial for broader applications like biomedicine and semiconductor fabrication. It is still a formidable challenge to achieve a humidity sensor with high sensitivity and anti-pollution ability. Inspired by horsefly eye, we propose a superhydrophilic CuO nanowires quartz crystal microbalance humidity sensor covered by micro-pit array, achieving outstanding self-cleaning properties. The physicochemical property of the sensing materials was characterized in situ by SEM, XRD, and XPS. The sensing characteristics of the specimen towards water molecules are studied by quartz crystal microbalance with dissipation monitoring, showing high sensitivity of 82.5±7.7 Hz/%RH. Molecular dynamic simulation and Brunauer-Emmett-Teller nitrogen sorption analysis are conducted for revealing the superhydrophilicity mechanism of CuO nanowires. Then a CuO nanowires humidity-sensing model is established, verified by both theoretical calculations and experiments. A smart non-contact sensing system based on the sensors was constructed, and the humidity intensity of human breath or fingers were detected. Our works demonstrate brilliant properties of the superhydrophilic CuO nanowires for non-contact sensing applications, providing new solutions for medical health monitoring, industrial environment detection, and human-computer interaction, etc.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Chenhuinan Wei,Xiao Zou,Qiming Liu,Shuxian Li,Chenxia Kang,Wei Xiang
CuS nanosheets modified Cu 2 O/CuO nanowire arrays (NWAs) were successfully fabricated on Cu foil by in-situ growth and successive ionic layer adsorption and reaction (SILAR) methods without binders. The three-dimensional Cu 2 O/CuO NWAs not only showed strong binding force with current collector but also provided abundant surface area to support CuS nanosheets. Different morphologies of CuS were obtained by varying the Cu(NO 3 ) 2 and Na 2 S concentrations and the SILAR cycle. When these step-wise prepared products were employed for non-enzymatic glucose sensing, the amperometric response of the optimized CuS/Cu 2 O/CuO/Cu electrode was approximately twice of that of Cu 2 O/CuO/Cu electrode. The result is attributed to the modification of CuS nanosheets with suitable amount which increases the active surface area of the electrode. This designed electrode presents an ultrahigh sensitivity of 4262 μA mM −1 cm −2 in the range from 0.002 to 4.096 mM, as well as the excellent selectivity, reproducibility and stability. Moreover, due to the facile preparation and the low cost of Cu based sensors, the CuS/Cu 2 O/CuO/Cu electrode will be one kind of promising materials for constructing practical non-enzymatic glucose sensors.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2021
·
IF 4.094
Nadia Taloub,Li Liu,Jun Li,Nahla Rahoui,Yudong Huang,Mohammad Hegazy
The effect of growing CuO nanowires decorated with Ag nanoparticle in the presence of poly(dopamine) (PDA) as intermediate agent on PIPD fiber surface was evaluated. This treatment exhibited significant enhancement of the interfacial and mechanical performance, along with increment of the antimicrobial activity against E. coli as a model for Gram-negative bacteria. The scanning electron microscopy (SEM) validates the growth of CuO NWs and Ag NPs on the surface of PIPD fiber. The X-ray diffraction (XRD), The X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and the ratio of weight loss analyses supported the above results. The interface shear strength (IFSS) between the PIPD fiber and epoxy resin was improved by 72%; and the coated Ag nanoparticles raised the fiber tensile strength (TS) by 13%. The influence of UV radiation and hydrothermal degradation on PIPD fiber was studied, and the UV and hydrothermal aging resistance were both increased by 15% and 22% respectively. The antimicrobial activity analysis results strong efficiency of the coated PIPD fibers by Ag NPs against gram negative bacteria E. coli.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Cheng Zuo,Xishi Tai,Qian Su
S-scheme heterojunction can accelerate the separation of photogenerated electron-hole pairs and retain strong redox ability, so it has outstanding advantages and application prospects in the field of photocatalysis . The Ce 3+ self-doping CeO 2-x @CuO nanowires arrays on copper mesh were synthesized with the strategy of surface hydrogenation and hydrothermal calcination method. The morphology, composition and properties of the catalysts were determined by SEM, TEM, EDS , UV-VIS, PL , CO 2 -TPD and other characterization methods. Ce 3+ self-doping introduces O vacancies on the surface of CeO 2 without introducing heteroatoms. The O vacancies of CeO 2-x could enhance the adsorption, activation and reduction of CO 2 . The existence of coaxial S-scheme heterojunctions could effectively enhance the light absorption range and the separation of photo-generated charges. The photocatalytic activity of the composite catalyst was much higher than that of pure CuO/copper mesh (CM) and CeO 2 , and the difference in activity of catalysts composed of different proportions was studied. When the Ce 3+ self-doping CeO 2-x loading was moderate, the methanol yield reached 6.73 μmol·g cat −1 after 4 h reaction under visible light , which is 5.26 times of CuO/CM and 9.35 times of CeO 2 . The reduction mechanism of the composite catalyst at the gas-liquid interface was studied. This work demonstrates a feasible strategy to create efficient S-scheme heterojunction photocatalysts with rich active surface O vacancies for photocatalytic CO 2 reduction.
研究领域:
材料科学
·
环境科学
·
光催化领域
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2017
·
IF 4.536
Cui Lu,Jianying Wang,Steffen Czioska,Huan Dong,Zuofeng Chen
We report here the fabrication of CuO nanowires and their use as efficient electrocatalyst for the oxygen evolution reaction (OER) or as precursor for preparation of Cu3P nanowires for the hydrogen evolution reaction (HER). The surface-bound Cu(OH)2 nanowires are in situ grown on a three-dimensional copper foam (CF) by anodic treatment, which are then converted to CuO nanowires by calcination in air. The direct growth of nanowires from the underlying conductive substrate can eliminate the use of any conductive agents and binders, which ensures good electrical contact between the electrocatalyst and the conductive substrate. The hierarchically nanostructured Cu-based electrode exhibits excellent catalytic performance toward OER in 1 M KOH solution. Phosphorization of the CuO/CF electrode generates the Cu3P/CF electrode, which can act as an excellent electrocatalyst for HER in 1 M KOH. An alkaline electrolyzer is constructed using CuO and Cu3P nanowires coated copper foams as anode and cathode, which can realize overall water splitting with a current density of 102 mA/cm2 at an applied cell voltage of 2.2 V.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源转换与存储
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Qinjun Sun,Xiaolei Shi,Xiaochun Wang,Yanyu Zhai,Liyan Gao,Zhanfeng Li,Yuying Hao,Yucheng Wu
Metal nanowires have become an inevitable candidate for the next generation transparent conductive electrodes due to the high conductivity, transparency and flexibility. Here, copper nanowires (Cu NWs) with good uniformity were prepared in sequence by electrospinning technology, calcination and ethanol vapor phase reduction. Through adjusting vapor temperature accurately, the optimized Cu NWs with large aspect ratio of above 10 5 , a low sheet resistance down to 51.4 Ω/口and a high transmittance of 80% in visible spectra were prepared. Inverted planar heterojunction perovskite solar cells with Cu NWs network as transparent electrodes were designed and a power conversion efficiency of 5.32% was achieved when the coverage of Cu NWs was 22%.
研究领域:
材料科学
·
纳米技术
·
太阳能
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）