ACS Sensors
·
2025
·
IF 9.1
Huijuan Chen,Li Lv,Kaifeng Xue,Pinhua Zhang,Lulu Du,Guangliang Cui
Developing a portable and compact sensor for room temperature detection of H2S in exhaled breath for health assessment presents considerable technical challenges. This work successfully synthesized Cu2O/ZnO heterostructures with excellent gas sensitivity to H2S at room and lower temperatures using a two-dimensional (2D) electrodeposition in situ assembly method with the application of a semisine wave voltage as well as CuZnO nanoarrays deposited under direct current voltage. The Cu2O/ZnO heterostructure sensors, with high response of 8.53 × 104 to 1 ppm of H2S and a minimum detection limit of 10 ppb at room temperature, exhibit a response of 42 for 10 ppm of H2S even at −20 °C, and its response to 50 ppm of H2S is approximately 3774 times greater than that of the CuZnO sensor, which is a significant challenge to achieve with sensors based on oxygen adsorption/desorption mechanisms. These outstanding gas-sensing properties are attributed to the formation of p–n heterojunctions in the Cu2O/ZnO heterostructures and the occurrence of the sulfuration reaction. In addition, we successfully employed the Cu2O/ZnO sensor to detect H2S in human exhaled breath, offering valuable insights for the monitoring of various chronic diseases and new directions for the development of portable room-temperature breath sensors.
研究领域:
材料科学
·
医学诊断
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2021
·
IF 3.407
Pinhua Zhang,Wenhao Di,Kaifeng Xue,Guangliang Cui
Cu 2 O/ZnO heterostructure ordered nanoarrays were prepared with an in situ electrodeposition method for H 2 S detection in biological samples at room temperature. Based on this new material, a novel sensor was proposed, which exhibited good performances for sensitivity and selectivity for bio-H 2 S detection due to the surface/interface effects and long-range ordered structure. It was confirmed by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) that these good performances were mainly attributed to the conversion of Cu 2 O to metallic Cu x S on the surface of the ordered structure. In addition, the sensor had good portability due to its small size. Our results suggest that the Cu 2 O/ZnO heterostructure ordered nanoarrays are promising candidates for high-performance H 2 S sensors applied in disease diagnosis and environmental assessment.
研究领域:
材料科学
·
生物学
·
环境科学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Zhigang Hu,Tian Gao,Jinghua Li
A janus polydopamine-coated Cu 2 O/ZnO nanoarchitectures (ZnCuO@PDA) is presented and show favorable applications in environmental remediation, specifically dye degradation. The nanoarchitectures consisted of a heterostructure co-composed of the N-type semiconductor ZnO and the narrow bandgap P-type semiconductor Cu 2 O as the core. The formation of the Cu 2 O/ZnO heterojunction lowered the rate of electron-hole complexation, and the PDA provided the nanomaterials with excellent photo-thermal properties and active sites, which worked together to enhance the degradation rate for dye by photothermal enhanced Fenton catalytic effect. Rhodamine B (RhB) was served as modal dye contaminant, then the degradation experiments showed that the low concentration of ZnCuO@PDA exhibited excellent dye degradation over a wide pH range. Furthermore, ZnCuO@PDA exhibits favorable biocompatibility and recyclability, making it an environmentally sustainable and economically multiphase catalytic system. This innovation presents a novel approach for effective dye degradation.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2021
·
IF 3.927
Benjie Zhu,Guofei Jiang,Yan Lv,Fang Liu,Juan Sun
In oilfield produced water, polyacrylamide (PAM) is a kind of organic polymer , which may gradually degrade to produce a large number of acrylamide (AM) monomer , and cause great damage to the peripheral nervous system of human and animals. In order to improve its removal efficiency, rGO@Fe 3 O 4 /Cu 2 O@ZnO magnetic composites with strong hydrophobicity , high photocatalytic performance and recyclability was prepared. The degradation process of PAM on composites photocatalyst was studied by simulating the sunlight irradiation, and the magnetic recovery performance and photocatalytic stability of composite were explored. Finally, the photocatalytic degradation mechanism of rGO@Fe 3 O 4 /Cu 2 O@ZnO composite was discussed by free radical capture experiment. The results showed that the highest photocatalytic degradation efficiency was 97.3% when the mass ratio of GO@Fe 3 O 4 and Cu 2 O@ZnO was 1:5, the dosage of rGO@Fe 3 O 4 /Cu 2 O@ZnO was 0.6 g L −1 , pH value was 7 and the initial concentration of PAM was 100 g L −1 . After four cycles, the magnetic recovery and degradation efficiency of PAM can still up to 91.3% and 81%, respectively, which both meet the needs of magnetic recovery and photocatalysis . In addition, according to the free radical capture experiment, the main active species was superoxide radical (·O 2− ). This work provides a strategy for designing magnetic composites with hydrophobic and high catalytic for photodegradation of organic pollutants.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2019
·Vol. 26
·期 24
·25286-25300
·
IF 2.914
Liu Fang,Che Yangli,Chai Qingwen,Zhao Mengfei,Lv Yan,Sun Hui,Wang Yongqiang,Sun Juan,Zhao Chaocheng
Copper and zinc composite oxides (Cu 2 O/ZnO) were synthesized by an impregnation-reduction-air oxidation method. A series of Cu 2 O/ZnO/rGO ternary composites were prepared by coupling with graphene oxide (GO) with different mass fractions in a solvothermal reaction system. The microscopic morphology, crystal structure, and optical characteristics of the photocatalysts were characterized. The degradation of p-Nitrophenol (PNP) and polyacrylamide (PAM) by photocatalytic materials under simulated solar irradiation were studied, and the degradation kinetics were also investigated. The results showed that cubic Cu 2 O was modified by ZnO nanorods and distributed on rGO nanosheets. The ternary Cu 2 O/ZnO/rGO nanocomposites have stronger simulated solar absorption ability and higher photodegradation efficiency than pure ZnO and binary Cu 2 O/ZnO nanocomposites. When the amount of Cu 2 O/ZnO/rGO-10 was 0.3 g L −1 , the degradation rate of 10 mg L −1 PNP reached 98% at 90 min and 99.6% of 100 mg L −1 PAM at 30 min. The photocatalytic degradation processes of PNP and PAM all followed the pseudo-first-order kinetic model. Free radical trapping experiments showed that superoxide radicals were the main active substances to improve photocatalytic efficiency. In addition, after four recycles, the catalytic efficiency of Cu 2 O/ZnO/rGO-10 was still over 90%. It showed that Cu 2 O/ZnO/rGO-10 was a promising catalyst for wastewater treatment because of its good photostability and reusability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2013
·
IF 3.535
Jing Li,Hongbo Li,Yan Xue,Hailin Fang,Wei Wang
A novel environment-friendly all oxide semiconductor Cu 2 O/ZnO heterojunction was first applied in photoelectrochemical biosensing. The heterojunction was prepared by facile two-steps of electrodeposition and characterized by scanning electron microscopy, X-ray diffractometry, and ultraviolet and visible spectrophotometer. The enhancement of photocurrent is attributed to the rapid and efficient electron transition and the inhibition of photo-induced electron–hole pairs recombination, which stems from the formation of energy level matching Cu 2 O/ZnO heterojunction. Using glutathione (GSH) as a model, the fabricated photoelectrochemical sensor showed good performances with a rapid response, facile preparation, wide concentration range, excellent stability and low detection limit (0.8 μmol L −1 ). It had been successfully applied to the detection of GSH in glucose injection and the result agreed well with that given in the instruction. This strategy opened a new channel for Cu 2 O/ZnO heterojunction in photoelectrochemical sensing.
研究领域:
生物传感器
·
纳米医学
·
分析化学
·
材料科学
·
环境科学
·
分子诊断
✓ 已验证
DOI
高影响因子
Nanoscale
·
2012
·Vol. 4
·期 24
·7817-7824
·
IF 5.914
Yang Wang,Shouchuan Li,Hui Shi,Ke Yu
Two kinds of Cu2O–ZnO nano-heteroarchitectures were fabricated through a hydrothermal method. By utilizing polyethyleneimine (PEI) as a binding agent, ZnO nanoparticles were uniformly self-assembled onto Cu2O micro structures. Photoluminescence (PL), field emission and photocatalytic activities of the composite samples were investigated and compared with those of the pure Cu2O samples. The results reveal that ZnO nanoparticles combined on Cu2O microstructures remarkably changed the PL signals, and significantly enhanced the field emission and photocatalytic activities. The novel PL properties, enhanced field emission and photocatalysis activities are attributed to the electron transition and the inhibition of photo-induced electron–hole pairs recombination, which stem from interfacial defect states and energy band differentials at the interface of Cu2O and ZnO. The surface nano-protrusions, large surface area and better dye adsorption induced by ZnO nanoparticles are responsible for the field emission and photocatalysis improvements as well.
研究领域:
材料科学
·
光学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 45
·期 6
·3095-3101
·
IF 3.288
Yilin Yin,Jingchao Liu,Zengnan Wu,Ting Zhang,Zenghe Li
As one of the most essential semiconductors, ZnO has been widely used for solar cells, photocatalysis, environmental remediation, etc. Doping and morphology control of ZnO can significantly improve the efficiency of its photocatalytic performance. Tetracycline hydrochloride (TC) is widely used in medical and veterinary fields. Its excess use harms the environment and human health. Herein, we have successfully prepared Cu2O-doped ZnO with a porous structure by calcination using ZIF-8 as the precursor. After exposure to visible light (λ >420 nm) for 75 min, these photocatalysts exhibited a reasonable TC degradation rate (∼83.6%). Compared with ZnO, the Cu2O-doped ZnO introduces a p–n heterojunction and increases oxygen vacancies, which reduces the band gap and electron–hole recombination. Therefore, the photocatalytic efficiency for TC and PEC performance have been improved.
研究领域:
材料科学
·
环境科学
·
化学工程
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Sehrish Ibrahim,Wensheng Xie,Xiaofeng Li,Guofeng Li,Xing Wang
Engineering interfacial electronic interactions between physically distinct metal oxides without phase transformation, doping, or lattice fusion remains a central challenge of interface science. Conventional Cu2O–ZnO systems rely on heterojunction formation or compositional mixing, whereas carbon-mediated electronic coupling between discrete phases remains largely unexplored. Here, we report strongly electronically coupled carbon-bridged Cu2O/ZnO nanocomposites (Cu2O–C–ZnO NCs) synthesized by incorporating spherical Cu2O and diamond-shaped ZnO nanoparticles into a gallic-acid-derived carbon framework. Structural and compositional analyses confirm the coexistence of crystalline Cu2O and ZnO interlocked in a homogeneous carbon matrix, with oxygenated carbon functionalities verified spectroscopically. X-ray photoelectron spectroscopy reveals binding energy shifts in Cu and Zn core levels, providing direct evidence of interfacial electronic coupling and charge redistribution without lattice fusion or heterojunction formation. This electronic interface coupling helps regulate charge transfer between the oxide materials, allowing the controlled release of metal ions and enhancing the generation of reactive oxygen species. As a functional consequence, the NCs exhibit significant antibacterial activity against Gram-negative and Gram-positive bacteria, as well as substantial antialgal activity against freshwater species. Mechanistic evidence validates that the activity stems from a synergy of phenomena, including controlled ion release, ROS, and membrane damage due to oxidative stress, supported by findings from enzymatic and cellular assays. These results demonstrate that carbon-mediated interfacial electronic coupling is a viable method for controlling the surface reactivity of multicomponent oxide systems with the intact structural integrity of individual components.
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Yangyang Li,Yongqi Wang,Dumei Ma,Chuan-Fan Ding,Yinghua Yan
Enhancing the ionization efficiency of saccharides remains a significant challenge in matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Herein, novel MOF-derived erythrocyte-like CuO/Cu2O@ZnO–CN nanomaterials were designed as a MALDI matrix for various saccharides’ detection. The ZIF-8-derived ZnO framework maintained its intrinsic porosity while gaining uniformly distributed C/N-doped catalytic sites. Copper oxides integration further induced an erythrocyte-like morphology with a substantially larger surface area. The CuO/Cu2O@ZnO–CN matrix demonstrated superior performance over conventional CHCA and DHB in LDI-MS analysis of saccharides (Xyl, Glc, and Malt), featuring the advantages of excellent conductivity and stability, minimum background interference, excellent ionization efficiency, high salt and protein tolerance, and remarkable specificity. The developed method enabled accurate glucose quantification in human serum (0.5–9 mM linear range, R2 = 0.998) with a low limit of detection (LOD) of 0.28 mM via internal standardization. Good reproducibility and reliability of the method were verified by intraday (1.7–5.6%) and interday precision (2.2–8.2%) and accuracy (93.8 to 101.6%). Analysis of glucose of human serum from healthy people and diabetes patients indicated the matrix’s potential application in clinical analysis.
研究领域:
分析化学
·
纳米材料
·
质谱分析
·
临床诊断
·
传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）