MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2021
·
IF 3.927
Yihang Dong,Xiangnan Wang,Ye Han,Shuyu Yao
{(ZrO 2 ) 0.92 (Y 2 O 3 ) 0.08 } 1- x (CuO) x (ZYC) synthesized by the co-precipitation method with different stoichiometry ( x =0, 0.1, 0.2 and 0.3) are evaluated through thermogravimetric-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD) and electrical conductivity using an electrochemical workstation and the effects of CuO doping content on the above properties are researched, respectively. The results are discussed in terms of the potential as diffusion barrier material to be applied in diffusion barrier limiting current oxygen sensors application at temperatures from 500 to 850 °C. Results derived from TG-DSC shows that the weight loss of the sample is mainly due to the decomposition of the precursor, forming ZYC above ~600 °C. XRD analysis shows that the ZYC sample is a cubic phase and the CuO doping is benefit to the crystallinity of ZYC. The electrical conductivity results indicate that the total conductivity decreases for ZYC1 but then increases with the increase of CuO doping content and reaches the maximum total conductivity of 2.02 × 10 −1 S cm −1 at 850 °C and the activation energy ( E a ) is 0.93 eV for ZYC3.
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高影响因子
IONICS
·
2019
·Vol. 25
·期 9
·4447-4457
·
IF 2.289
Zhang Jing,Chen Lu,Yang Ke
This work proposed a novel and facile in situ precipitation procedure for synthesis of CuO nanoparticles decorated hierarchical Ce-metal-organic framework nanocomposite (CuONPs/Ce-MOF). The Ce-MOF and CuONPs/Ce-MOF was characterized using electron microscopies, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetry analysis, which showed CuONPs uniformly on straw-sheaf-shaped Ce-MOF surface. In 0.1 M NaOH, CuONPs/Ce-MOF modified electrode showed excellent electrocatalytic activity to glucose oxidation, and the modified electrode was employed to construct a non-enzymatic glucose sensor. The proposed sensor displayed a wide linear range of 5 nM–8.6 mM spanned 6 orders of magnitude, an untrasensitivity of 2058.5 μA mM −1 cm −2 , and a low detection limit of 2 nM (S/ N = 3). In addition, this sensor displayed excellent repeatability, reproducibility, stability, and selectivity, and the results of glucose detection in human blood serum were very accurate. All these results indicated that CuONPs/Ce-MOF-modified electrode was a promising candidate for practical non-enzymatic sensing for glucose.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Zheng Meiru,Liu Ying,Qiao Peng,Wang Xueqin,Guo Xin,Zhang Mei,Zhang Jiaojing,Zhang Jianwei,Feng Fuping
Photocatalysis technologies for degrading organic pollutants have emerged as a promising strategy for environmental remediation. This study aimed to develop efficient photocatalysts by synthesizing TiO 2 -loaded composites derived from CuZnAl layered double hydroxides (LDHs) and assessed their performance in the decomposition of rhodamine B (RhB). CuZnAl-LDH nanosheets were synthesized via coprecipitation and then calcined at high temperatures to obtain CuZnAl layered double oxides (CZA-LDO). By varying the amount of ascorbic acid, the CuO in CZA-LDO was reduced to different extents, thereby varying the ratio of Cu, Cu 2 O and CuO. TiO 2 was then deposited on the surface. The morphology, crystal structure, bonding state, and photocatalytic performance of the composite materials were assessed. When exposed to UV light, the optimized TiO 2 /Cu–Cu 2 O–CuO–0.7 composite material achieved a degradation rate of 96.0% for RhB within 110 min, which was significantly better than TiO 2 /CZA-LDO (46.0%) and other Cu-modified samples (66.2%–77.9%). The enhanced photocatalytic properties of the prepared nanocomposite were ascribed to doping with Cu, Cu 2 O and CuO, which effectively enhanced the electron–hole pair separation efficiency. These findings demonstrate the potential of Cu-Cu 2 O-CuO-LDO-based photocatalysts as effective materials for degrading organic contaminants in environmental remediation. Graphical abstract
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DOI
高影响因子
MICROELECTRONICS RELIABILITY
·
2026
·
IF 2.5
Tao Yang,Guoyou Gan,Xianglei Yu,Hu Sun,Junpeng Li
This study investigates the electrical properties and stability of resistor pastes formulated from RuO 2 –CuO composites doped with La 2 O 3 . The pastes exhibit an approximately linear positive temperature coefficient (PTC) of resistance behavior, referred to as near-linear positive temperature coefficient of resistance (TCR) in this work, to emphasize the linearity of the resistance-temperature relationship, with optimal performance achieved at 1.2 wt% La 2 O 3 doping. Microstructural analyses indicate that La 2 O 3 promotes densification of the resistive layer, enhancing the stability of the conductive network. After 1000 h of storage at room temperature, the resistance change rate is approximately 0.5%. Under high-temperature conditions (150 °C for 240 h), the rate increases slightly to about 2%, demonstrating satisfactory preliminary stability.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Sisi Hu,Yanping Zhong,Jinghua Xu,Lingli Min,Xujun Liang,Rui Bai,Shuhua Wang
Waste printed circuit boards (PCBs), a common electronic waste, contain a high content of Cu. For environmental sustainability and economic benefit, it is necessary to recover the Cu as high value-added product instead of discarding it. In this work, Cu from PCBs was successfully recovered as CuO particles with high specific surface area and rich oxygen vacancies through cyclic leaching, chemical precipitation, low temperature aging, and calcination. Compared with CuO prepared from commercial Cu(NO 3 ) 2 ·5H 2 O, the PCBs-derived CuO (PCBs-CuO) exhibited comparable performance in activating peroxymonosulfate to degrade reactive blue 19, although its crystallinity and phase purity were relatively lower. Additionally, PCBs-CuO had an outstanding pH tolerance (2–12), confirming the practical application potential of PCBs-CuO in the removal of organic contaminants in various wastewater. Moreover, the quenching experiments, electrochemical measurements and electron paramagnetic resonance analysis suggested that 1 O 2 and ·OH played a significant role in PCBs-CuO/peroxymonosulfate system. The ≡Cu(II) and oxygen vacancies on the surface of PCBs-CuO was mainly responsible for the activation of peroxymonosulfate. This work provides a promising method for recycling metal from waste PCBs into high-effective peroxymonosulfate activator and simultaneously achieving environmental remediation.
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.7
Huitian Zhi,Lingwei Bu,Ruhui Shang,Xujie Wang,Yingchao Yang,Wanyu Zhang,Zhengquan Yan,Lei Hu
Food health and safety is one of the hottest topics to affect human life nowadays. To reliably detect toxic S 2− and to normalize bioactive ascorbic acid (AA), a kind of tiny CuO/CeO 2 modified bovine serum albumin (CuO/CeO 2 @BSA) was prepared under microwave-assisted conditions. Not only did the modification of BSA to CuO/CeO 2 nanospheres endow CuO/CeO 2 @BSA with high stability and an average mesoporous pore of 3.88 nm, it exhibited outstanding oxidase-like activity to catalyze the oxidization of 3,3′,5,5′-tetramethyl benzidine (TMB) with V max / K m of 0.15 mM/5.96 × 10 −8 M·s −1 . The presence of trace S 2− or AA could exclusively deteriorate the characteristic UV–vis absorbance intensity at 652 nm ( A 652 ) of CuO/CeO 2 @BSA-TMB with obvious hypochromic effect from dark blue to light blue. Under the optimal oxidase-mimic conditions, CuO/CeO 2 @BSA-TMB was applied for potable UV–vis spectral/smartphones-assisted red-green-blue (RGB) monitoring of S 2− or AA in complex agricultural products with detection limits as low as 9.2 × 10 −9 /4.0 × 10 −8 M or 6.1 × 10 −8 /7.2 × 10 −8 M. The analysis accuracy was reliable from comparing their F and t values and the detection mechanisms were proposed. It will shed a potential for portable monitoring of analytes in food samples practically.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuxiang Deng,Zhenyu Cai,Libo Yang,Zhiyao Wu,Bihong Chen,Chang Gao,Xinyu Yu,Nannan Wang,Xinpeng Wang
3DOM-TiO 2 /CuO S-scheme heterojunction synthesized via hard templating • Removes 99.06% U(VI) in 120 min; capacity of 1751.33 mg/g • Dynamic Cu valence change & O-vacancy evolution restrain charge recombination. • In situ multi-spectra & DFT reveal charge transfer and U(VI) reduction mechanism. Photocatalysis offers a sustainable approach for uranium-containing wastewater remediation, yet conventional materials still suffer from limited solar-light utilization and rapid charge recombination. Herein, a three-dimensional ordered macroporous TiO 2 /CuO composite (3DOM-TC) was synthesized using resorcinol–formaldehyde resin spheres as a hard template. The ordered macroporous TiO 2 framework enables slow-photon-assisted light harvesting and multiple light scattering, while CuO coupling broadens the light-response range and constructs an S-scheme TiO 2 /CuO heterojunction to promote directional charge separation. Meanwhile, oxygen vacancies mainly serve as electron-trapping and O 2 /intermediate adsorption–activation sites, which are coupled with the dynamic Cu 2+ /Cu + variation during photocatalysis. As a result, 3DOM-TC achieves 99.06% U(VI) removal within 120 min, corresponding to a maximum extraction capacity of 1751.33 mg/g. Photoelectrochemical tests confirm enhanced photocurrent density and efficient interfacial charge transport compared with pristine TiO 2 . In situ EPR, XPS, and DFT calculations reveal the photoinduced charge-transfer pathway and illumination-enhanced oxygen-vacancy signals. Moreover, in situ FTIR spectroscopy confirms that photogenerated ·O 2 − can further convert to H 2 O 2 -related species, thereby promoting U(VI) precipitation as (UO 2 )O 2 ·4H 2 O. This work highlights the synergistic integration of 3DOM-enabled light harvesting, S-scheme charge separation, and vacancy-assisted electron transfer and O 2 activation, providing a promising strategy for efficient photocatalytic U(VI) sequestration. Download: Download high-res image (232KB) Download: Download full-size image
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高影响因子
DESALINATION
·
2026
·
IF 9.9
Siyoung Byun,Jiha Shim,Sejeong Seo,Mingyeong Kim,Woosung Kwon,Sanghyun Jeong
Janus membrane was integrated with oil separation and solar-driven desalination • Janus CuO@NC-PVDF hydrogel membrane achieved remarkable oil rejection • CuO@NC-PVDF layer demonstrated high surface temperature of ∼72 °C • Janus hydrogel membrane resulted in a high evaporation rate of 1.29 kg m -2 h -1 • Janus membrane can show remarkable long-term performance Solar-driven desalination has emerged as a promising strategy to address freshwater scarcity; however, its practical application is often hindered by severe performance deterioration under oily seawater conditions. To overcome the limitations of conventional interfacial evaporation systems, this study presents an asymmetric Janus hydrogel membrane based on copper oxide nanoparticles encapsulated within a nitrogen-doped carbon shell (CuO@NC), integrated into a polyvinylidene fluoride (PVDF) matrix. The CuO@NC-PVDF Janus membrane features a hydrophilic–hydrophobic dual-layer architecture, enabling the functional decoupling of oil rejection and solar-driven evaporation. The hydrophobic layer effectively prevents oil penetration, while the hydrophilic photothermal layer facilitates efficient water evaporation. As a result, the membrane achieved outstanding oil rejection (>99.99%) across various oil-contaminated feed conditions. Under 1 sun irradiation, the membrane exhibited a high surface temperature (∼45 °C), along with an enhanced evaporation rate of 1.29 kg m −2 h −1 and a solar-to-vapor efficiency of 86.4%. The Janus configuration improved the evaporation performance by approximately 2.8 times compared to conventional single-function systems. Moreover, the membrane maintained high evaporation and thermal efficiencies under realistic oily seawater conditions and demonstrated stable long-term operation over repeated cycles (∼10 cycles). These findings highlight the effectiveness of integrating photothermal functionality with asymmetric wettability in a Janus architecture, providing a robust and scalable platform for simultaneous oil–water separation and solar-driven desalination. This approach offers strong potential for practical applications in sustainable oily wastewater treatment and resource recovery. Download: Download high-res image (202KB) Download: Download full-size image
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高影响因子
Sustainable Materials and Technologies
·
2026
·
IF 9.7
Hao Liang,Bingquan Li,Haokai Luo,Mengjie Zhang,Yan Sun,Lin Jin,Yuhui Ao,De Sun
Solar-driven interfacial evaporation (SDIE) holds immense potential for sustainable desalination, yet current solar evaporators remain severely obstructed by the limited evaporation efficiency, inherent mechanical fragility and the complex fabrication of robust photothermal layers. Herein, we propose a “waste-to-wealth” structural engineering and in situ interfacial coupling strategy to develop a highly robust, 3D evaporator (CuO/rGO/PVA/SA-CF). By utilizing recycled waste carbon fiber needle-punched felt as a rigid skeletal constraint for a hydrogel-derived porous matrix, the device achieves an exceptional loading stress of 54.61 MPa at 3% strain, fundamentally resolving the issue of structural deterioration under demanding operational conditions. Furthermore, a highly efficient, single-step vacuum-assisted thermal process was designed to drive a synchronous transformation: the in-situ oxidation of copper alongside the reduction of graphene oxide (GO). This simultaneous oxidation-reduction mechanism yields a highly coupled photothermal architecture, delivering broadband solar absorbance of 95% and effectively reducing the equivalent evaporation enthalpy to 1587.02 kJ kg −1 . Under 1 sun illumination (1 kW m −2 ), the evaporator exhibits a high evaporation rate of 2.142 kg m −2 h −1 with a photothermal conversion efficiency of 91.8%. Furthermore, the device maintains a stable evaporation rate of 1.753 kg m −2 h −1 even in high-salinity brine (20 wt%), demonstrating outstanding salt-rejection performance. This work establishes a scalable, mechanically durable, and eco-friendly paradigm for next-generation solar desalination systems.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Fan Zhao,Zhiyuan Jiang,Xiangrui Jiang,Ruihao Wang,Lingmin Yu,Hairong Wang
High-performance MEMS CO sensor based on in-situ grown CuO-In₂O₃ nanocubes, offering high response (1 to 50 ppm) and fast kinetics (11/45 s). • Excellent stability and reproducibility (2.02% deviation) achieved through robust in-situ growth on micro-hotplates. • A miniaturised wireless prototype demonstrates potential for portable, non-invasive neonatal jaundice monitoring. Accurate detection of carbon monoxide (CO) concentrations in the exhaled breath of newborns with jaundice is crucial for early diagnosis of the condition. However, the consistency and integration of existing sensors are often constrained by inherent limitations in their manufacturing processes and material systems. Herein, the MEMS micro-hotplate gas sensor based on in-situ grown CuO-In₂O₃ heterojunction nanocubes. This sensor enables precise, low-power temperature control through a MEMS micro-hotplate. Meanwhile, the in-situ growth technology facilitates a stable interfacial connection between the sensing material and the chip, which contributes to the exceptional consistency in device performance. Concurrently, the in-situ grown 10% CuO-In 2 O 3 heterojunction exhibits a uniform cubic structure, high specific surface area (81.2 m 2 /g), and large pore size (9.8 nm). This gas sensor exhibits high response toward CO (12.5 at 50 ppm), short response/recovery times (9/48 s), and excellent moisture resistance. More importantly, in batch-produced devices, the consistency error in sensor response is 2.02%, significantly enhancing the reliability and repeatability of device arrays. Density functional theory calculations revealed, at the atomic level, the selective adsorption and charge transfer mechanism of CO molecules at the CuO-In₂O₃ p-n heterojunction interface, elucidating the intrinsic cause of its enhanced sensitivity. Furthermore, we integrated this sensor with a Bluetooth module, successfully assembling a miniaturised wireless real-time monitoring device. This research establishes the material foundation for developing a new generation of non-invasive, portable bedside monitoring devices for neonatal jaundice. Download: Download high-res image (137KB) Download: Download full-size image
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 16
·2755
·
IF 5.1
Hongqiang Yuan,Zheyuan Zhan,Ying Zhang,Yue Ran,Chaofan Tan,Jialian Xie
In this study, oil sludge was utilized as a carbon source to prepare a carbon-based catalyst. By leveraging the oil sludge’s inherent iron content and subsequently introducing exogenous copper, a CuO/Fe 2 O 3 /carbon composite material (OSC-0.75Cu) was synthesized for the activation of peroxymonosulfate (PMS) to degrade p-nitrophenol. The OSC-0.75Cu/PMS system achieved a degradation efficiency of 92.19%, which was 2.91 times that of the OSC/PMS system (31.71%), and its reaction rate constant (k obs ) was 8.9 times greater. Furthermore, in simulated water matrices (containing anions and fulvic acid) and three real water matrices (rainwater, moat water, and Yangtze River water), the OSC-0.75Cu/PMS systemachieved PNP degradation efficiencies ranging from 71.63% to 76.36%. The degradation of p-nitrophenol in this system involves three primary reactive species: hydroxyl radicals (•OH), sulfate radicals (•SO 4 − ), and singlet oxygen ( 1 O 2 ), among which 1 O 2 plays the dominant role. The coexistence of Cu and Fe species may facilitate surface redox reactions during PMS activation, while defect-related oxygen sites may contribute to PMS adsorption and activation and the generation of 1 O 2 . This study provides a novel strategy that enables the resource utilization of oil sludge while simultaneously addressing environmental remediation challenges.
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PubMed
高影响因子
Journal of the American Chemical Society
·
2026
·
IF 16.6
Wei Tan,Xueqing Liu,Jiawei Yang,Xiaoyu Ji,Kailong Ye,Shaohua Xie,Ge Yao,Chuanzhi Sun,Fudong Liu,Lin Dong
Abstract The catalytic conversion of gaseous NO to NH3 offers a promising dual-benefit strategy for environmental remediation and sustainable chemical synthesis. Herein, CuO/Al2O3 catalysts with varied CuO loadings (x wt %, xCu/Al) were developed for the possible NH3 production from NO reduction by CO with the assistance of H2O. While increasing CuO loading (1–12 wt %) monotonically improved NO conversion to N2 under dry conditions, the introduction of H2O dramatically boosted NO conversion on 5Cu/Al with highly dispersed CuOx clusters, raising its NO conversion comparable to that of 12Cu/Al. Further analysis revealed that NH3 was generated on xCu/Al catalysts under wet conditions, with NH3 generation on 5Cu/Al initiating at the lowest temperature (275 °C) and being the most vigorous. Combined experimental and theoretical analysis suggested that, on CuOx clusters, H2O facilitated the conversion of the NCO* intermediate to NH3 with a much lower activation barrier compared to its CO-mediated pathway to N2, well explaining the boosted NO conversion and NH3 yield on the 5Cu/Al catalyst upon H2O addition to NO + CO flow. This work highlights that a simple, earth-abundant Cu catalyst enabled the efficient and cost-effective synthesis of NH3 from air pollutants of NO and CO under mild conditions, underscoring a sustainable strategy that simultaneously addresses pollution abatement and resource recovery.
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