CERAMICS INTERNATIONAL
·
2026
·
IF 6
Zhan-jun Yang,Mi Li,Yan-Bo Cao,Yi Wu,Qiang Xu
This study addresses the issues of the limited contact interface between the fuel and the oxidizer. A strategy for simultaneously optimizing the formulation design and the preparation process was proposed. Three types of fuels - pure aluminum, aluminum-magnesium alloy, and aluminum-silicon alloy - were selected, and polyvinylidene fluoride (PVDF) was used as the binder. Six groups of thermal reaction samples were prepared by two methods: physical mixing (PM) and electrostatic spray atomization (ES). The microstructure, combustion characteristics, thermal behavior, and product composition of the samples were systematically studied using scanning electron microscopy, X-ray diffraction, high-speed photography, infrared thermal imaging, and synchronous thermal analysis. The results showed that the alloy fuels affected the later stage of the reaction by altering the melting behavior and surface oxide layer characteristics, while electrostatic spray atomization played a key role in the early stage, functioning by shortening the mass transfer distance and enhancing the “pre-ignition” effect of polyvinylidene fluoride. The coupling of fuel formulation and preparation process enables differential modulation of the combustion performance of Al/CuO thermites. This study provides an effective strategy for developing high-performance aluminum-based thermite materials.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiangjian Liu,Wenxiu Yang,Lulu Chen,Jianbo Jia
Metal and metal oxides with various nanostructures have been widely studied in non-enzymatic glucose sensing. In this work, we report an efficient catalyst platform, which is made of three-dimensional copper foam (CF) skeleton and copper oxide nanowire arrays (CuONWA), is used to construct glucose sensor. The three-dimensional CuONWA/CF was synthesized via a facile wet-chemical method and subsequent annealing. The CuONWA is evenly covered by CuO nanoflowers . The morphology and composition of the platform were characterized. The nanowire arrays and nanoflowers both enhanced the electrocatalytic performance of the integrated electrode via greatly increasing the surface area of the CF substrate. The electrocatalytic properties of the non-enzymatic glucose sensor were characterized by a series of electrochemical measurements. The sensor exhibits excellent performance, with a linear range of 0.10 μM–0.50 mM, a sensitivity of 32330 μA mM −1 cm −2 , a low limit of detection of 20 nM (S/N = 3), excellent selectivity, reproducibility, and stability. The sensor was also used for glucose sensing in human serum and Wahaha ice black tea, with relative standard deviations (for n = 6) of 3.15% and 2.43%, respectively.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2022
·Vol. 9
·期 9
·095501
·
IF 2.025
Diwen Zhou,Xianjuan Pu,Zheng Jiao,Weitao Li
With the development of the times, more and more pollutants such as dyes produced by industry have inevitably caused harm to human health. Dyes are complex and stable in structure, and traditional methods of physically and chemically processing dyes have been proven to be inefficient. The heterogeneous photocatalytic technology has been widely regarded as one of the most promising processes for the treatment of harmful organic wastewater. In this paper, copper oxide (CuO) nanomaterials were synthesized via a hydrothermal method and it was found that the stirring temperature can regulate its morphology and structure, which in turn affects the optical, electrical and catalytic properties of the final product. By controlling the stirring temperature, CuO nanomaterials in the range of ∼30–500 nm were obtained. The as-prepared composites were characterized using x-ray diffraction, transmission electron microscope, scanning electron microscopy, and ultraviolet-visible spectroscopy techniques, among others. After a possible mechanism was proposed according to the above data, the photocatalytic performance of the CuO nanomaterials was evaluated by measuring the decomposition rate of rhodamine B (RhB) solutions. The results indicated that the CuO obtained at 100 °C exhibited excellent photocatalytic activity in comparison to other samples, with around 93% degradation of the RhB solution after 80 min. Finally, the recycling performance of the CuO nanomaterials was also tested and found to be extremely stable, with a high degradation level of 78% maintained after five cycles. In conclusion, the CuO nanomaterials are efficient catalysts for the complete degradation of RhB.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2026
·
IF 7.2
Luyao Zhang,Danyang Zhang,Silu Li,Bufan Xu,Fan Jiang,Yufan Nie,Guoliang Li
Copper oxide nanoparticles (CuO NPs), with their superior catalytic activity, antimicrobial performance and photoelectric properties, are widely used in production and daily life, thereby increasing their environmental release risk. Compared with the well-studied effects of ionic copper, the chronic toxicity of CuO NPs remains largely overlooked. In this study, zebrafish were exposed to environmentally relevant concentrations (5 mg/L Cu) of CuO NPs or copper sulfate (CuSO 4 ) to systematically evaluate intestinal toxicity induced by long-term exposure to different forms of copper. An integrated strategy incorporating ultrastructural analysis, biochemical assays, gut microbiota profiling, and metabolomic analysis was employed. Both copper forms induced mitochondrial damage, metabolic perturbations, and gut microbial dysbiosis in intestinal epithelial cells. However, CuO NPs showed markedly stronger intestinal toxicity than ionic copper. Specifically, CuO NPs can directly penetrate mitochondria in particulate form, impair mitochondrial structure, and potently activate the FDX1-LIAS-DLAT cuproptosis pathway, thereby triggering significant disturbances in amino acid, lipid, and nucleotide metabolism. Furthermore, CuO NPs exerted a more robust impact on the bidirectional gut microbiota-host metabolite interactions. In conclusion, this study clarifies form-dependent differences in copper-induced intestinal toxicity and highlights the critical role of microbiota-metabolite crosstalk in CuO NP-mediated adverse effects. These findings yield critical mechanistic insights and provide a robust scientific basis for evaluating the potential health risks posed by chronic exposure to CuO NPs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR BIOSCIENCE
·
2022
·Vol. 22
·期 10
·2200208
·
IF 5.859
Qingxi Hu,Runsheng Lu,Suihong Liu,Yakui Liu,Yan Gu,Haiguang Zhang
Biocompatible hydrogels have been considered one of the most well-known and promising in various materials used in the fabrication of tissue-engineering scaffolds. Although considerable progress has been made in recent decades, many limitations remain, such as poor mechanical and degradation properties of biomaterials. In addition, vascularization of tissue-engineering scaffold is an enduring challenge, which limited the fabrication and application of scaffold with clinically relevant dimension. To cover these challenges, in this work, a novel nanocomposite interpenetrating polymer networks (IPN) hydrogel scaffold consists of methacrylated gelatin (GelMA), poly(vinyl alcohol) (PVA), and copper oxide nanoparticles (CuONPs) is fabricated by extrusion-based 3D printing. A series of physiochemical and biological characterizations of the nanocomposite GelMA/PVA scaffolds are performed. Results showed that the mechanical and degradation properties of the nanocomposite GelMA/PVA scaffolds are obviously improved compared to GelMA scaffolds with single network. In vitro cell experiments and chick embryo angiogenesis (CEA) assay confirmed good cytocompatibility of the fabricated scaffold and its potential to promote cell migration and angiogenesis. In conclusion, altogether the results demonstrated that GelMA/PVA IPN scaffolds modified with CuONPs have great potential for fabrication of volumetric scaffolds and promote angiogenesis during tissue growth and repair.
研究领域:
材料科学
·
生物材料
·
组织工程
·
纳米技术
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 6
·
IF 4.324
Fang Peng,Yan Sun,Weiwei Yu,Yue Lu,Jiaming Hao,Rui Cong,Jichao Shi,Meiying Ge,Ning Dai
In this work, the compositional optimization in copper oxide/tungsten trioxide (CuO/WO3) composites was systematically studied for hydrogen sulfide (H2S) sensing. The response of CuO/WO3composites changes fromp-type ton-type as the CuO content decreases. Furthermore, thep-type response weakens while then-type response strengthens as the Cu/W molar ratio decreases from 1:0 to 1:10. The optimal Cu/W molar ratio is 1:10, at which the sensor presents the ultrahighn-type response of 1.19 × 105to 20 ppm H2S gas at 40 °C. Once the temperature rises from 40 °C to 250 °C, the CuO/WO3(1:1) sensor presents thep-nresponse transformation, and the CuO/WO3(1:1.5) sensor changes from no response ton-type response, because the increased temperature facilitates the Cu-S bonds break and weakens thep-type CuO contribution to the total response, such that the CuS bond decomposition by a thermal effect was verified by a Raman analysis. In addition, with a decrease in CuO content, the CuO is transformed from partly to completely converting to CuS, causing the resistance of CuO to decrease from increasing and, hence, a weakening mode ofp-CuO andn-WO3to the total response turns to a synergistic mode to it.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Fuqiang Guo,Cheng Feng,Zheng Zhang,Lili Zhang,Chang Xu,Congting Zhang,Shuang Lin,Huanxing Wu,Baohua Zhang,Aersi Tabusi,Yineng Huang
In this paper, the Ti 3 C 2 T x /CuO nanocomposites were successfully prepared by an environment-friendly and simple hydrothermal method . The synthetics are evaluated using a series of characterization techniques, such as XRD , SEM, TEM , XPS , FTIR, UV–vis, and BET techniques. The results show that Ti 3 C 2 T x /CuO nanocomposites are mesoporous and have a higher specific surface area than Ti 3 C 2 T x , confirming the presence of more gas adsorption/diffusion regions. Furthermore, the Ti 3 C 2 T x with the introduction of CuO has rich oxygen vacancies and adsorbed oxygen. In particular, the response of Ti 3 C 2 T x /CuO sensor (56.99%) is 5 times higher than that of Ti 3 C 2 T x (11.17%) sensor to 50 ppm NO 2 at room temperature (RT). Especially, the Ti 3 C 2 T x /CuO sensor exhibits ultra-fast response/recovery time (16.6/31.3 s to 20 ppm NO 2 ), great reversibility , outstanding selectivity to NO 2 , and desirable long-term stability (over 40 days). The enhanced gas sensing performance may be attributed to the formation of hybrid heterojunctions between CuO and Ti 3 C 2 T x that provide carrier migration channels to hasten the redox reaction . At the same time, Ti 3 C 2 T x /CuO possesses more oxygen vacancies and adsorbed oxygen than Ti 3 C 2 T x , which will reduce the required energy for gas adsorption to further enhance the gas sensing performance. Hopefully, the above improved gas sensing performance indicators modified with CuO are expected to become the advantage of constructing Ti 3 C 2 T x -based sensor, which will be put into commercial NO 2 detection in the future.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·126505
·
IF 4.386
Yaqi Liu,Kaidong Zhan,Zhili Shi,Wenjing Lv,Pujia Cheng,Xuecheng Ren,Fan Wu
CuO nanoarrays were synthesized by using a hydrothermal method, and TiO2 nanocrystals were deposited on the surface of CuO nanoarrays to form bulk heterostructure photoelectrodes. The current-time curve revealed that TiO2 nanocrystals can enhance the photocurrent of CuO nanoarrays, resulting from the higher charge separation efficiency and transfer rate. In addition, the effects of small biases (–0.1 and 0.1 V) on the photocurrent and photogenerated charge dynamics in the aforementioned photoelectrodes were evaluated. A small bias was found to not influence the macroscopic dynamical process during charging and discharging of the CuO photoelectrode, but it was more correlated with the microscopic dynamics. Additionally, the built-in electric field in the CuO nanoarray/TiO2 heterojunction could be affected by a small external bias, thereby influencing the charge separation and charge diffusion concentration, which, subsequently, influenced the charge diffusion length, L. In contrast, L in the pristine CuO nanoarray was not improved under a small reverse bias, because the small reverse bias could not efficiently improve the diffusion concentration owing to the lack of a built-in electric field to dissociate electron-hole pairs. These kinetic mechanisms are helpful in understanding the photoelectric conversion process in heterogeneous photoelectrodes.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2022
·
IF 8.455
Jingxin Yang,Hongrui Ma,Chuan Wang,Hong Liu
Bromate formation has been found in the SO 4 •− -based oxidation processes, but previous studies primarily focused on the bromate formation in the homogeneous SO 4 •− -based oxidation processes. The kinetics and mechanisms of bromate formation are poorly understood in the heterogeneous SO 4 •− -based oxidation processes, although which have been widely studied in the eliminations of micropollutants. In this work, we found that the presence of CuO, a common heterogeneous catalyst of peroxymonosulfate (PMS), appreciably enhanced the bromate formation from the oxidation of bromide by PMS. The conversion ratio of bromide to bromate achieved over 85% within 10 min in this process. CuO was demonstrated to play a multiple role in the bromate formation: (1) catalyzed PMS to generate SO 4 •− , which then oxidizes bromide to bromate; (2) catalyzed the formed free bromine to disproportionate to bromate; (3) catalyzed the formed free bromine to decomposed back into bromide. In the CuO-PMS-Br system, bromate formation increases with increasing CuO dosages, initial CuO and bromide concentrations, but decreases with increasing bicarbonate concentrations. The presence of NOM (natural organic matter) resulted in a lower formed bromate accompanied with organic bromine formation. Notably, CuO catalyzes PMS to transform more than 70% of initial bromide to bromate even after recycled used for six times. The formation of bromate in the PMS catalysis by CuO system was also confirmed in real water.
✓ 已验证
产品关联
DOI
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.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Qian Wang,Huanshun Yin,Yunlei Zhou,Jun Wang,Shiyun Ai
As an important epigenetic modification, 5-formylcytosine (5fC) plays a vital role in cell differentiation, genomic DNA structure and function regulation. Its low abundance in all suckler tissues and cells and high structural similarity with cytosine (C) and its derivatives, the sensitive and selective detection method for 5fC is required. In this work, a photoelectrochemical biosensor was constructed using BiIO 4 -WS 2 composite as photosensitive material, the synergy of ternary heterojunction of BiIO 4 -WS 2 /CuO as signal amplification technology and 5-formylcytosine deoxyribonucleoside (5fdC) as target. Firstly, the ITO electrode modified by BiIO 4 -WS 2 was aminated by (3- aminopropyl) triethoxysilane. 5fC was captured on the electrode surface with amidogen as recognition reagent, based on the amide bond formed between amidogen and aldehyde group. Then, 4-carboxyphenylboronic acid (4-CPBA) was linked by covalent reaction between boronic acid and O -diol of 5fdC. Finally, the signal amplification material of amino-functionalized CuO was deposited on the electrode surface through the formation of amide bond based on −COOH of 4-CPBA and –NH 2 on CuO. In view of the constitution of a ternary heterojunction between CuO and BiIO 4 -WS 2 , the photoactivity of BiIO 4 -WS 2 was greatly enhanced, which also increased the detection sensitivity with the wide examination area from 0.005 to 200 nM and low limit of detection was 0.38pM (3σ). Based on the specific covalent identification pattern, this method showed high selectivity for 5fC, even discriminating 5fC with C and 5hmC. The impacts of antibiotics and heavy metals on 5fdC content change in genomic DNA of wheat tissues were investigated, and thus the feasibility of this work was evaluated.
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2021
·Vol. 14
·期 10
·3439-3445
·
IF 8.897
Li Zixin,Xu Quanlong,Gou Faliang,He Bing,Chen Wei,Zheng Weiwei,Jiang Xu,Chen Kai,Qi Chenze,Ma Dekun
Photoelectrochemical oxygen reduction reaction (ORR) toward H 2 O 2 is highly desirable because only sunlight, O 2 and water are required in the process. However, the corresponding studies are still at its infancy because of the lack of suitable photocathodes, especially inorganic semiconductor photocathodes. In this work, we report CuBi 2 O 4 /CuO (CBO/CuO) heterojunction submicrocrystalline film photocathodes with efficient ORR activity for H 2 O 2 production. The heterojunction film photocathodes were prepared through thermal evaporation of Cu and Bi metals under vacuum and subsequent annealing treatment. Furthermore, the doping of Gd 3+ ions into CBO/CuO could significantly enhance the yield of H 2 O 2 . As a result, the concentration of H 2 O 2 could reach 1.3 mM within 30 min, which is 6 times higher than that obtained on the pristine CBO/CuO photocathode. The theoretical calculations suggested that the introduction of Gd could adjust the electronic structure of CBO surface and promote 2e ORR pathway for selective production of H 2 O 2 . Our work not only provides a new strategy for designing highly efficient photocathode for H 2 O 2 production but also will evoke more interest in photoelectrocatalytic ORR through inorganic semiconductor photocathode.
✓ 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）