JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2021
·Vol. 21
·期 12
·6088-6093
·
IF 0
Bai Wenxia,Zhou Jinxuan,Shi Xueting,Wang Haitao,Liu Yanhua,Feng Libang
The widespread application of artificial superhydrophobic material is hindered by the poor durability and regeneration of artificial superhydrophobicity. The problem is expected to be resolved by endowing the superhydrophobic material with self-similarity. Herein, Copper-based superhydrophobic
material intensified by furfuryl alcohol resin (Cu/FAR) with long-term durability and high strength is developed, and the obtained Cu/FAR composite reveals excellent and durable superhydrophobicity. Moreover, it is a remarkable fact that the as-prepared superhydrophobic Cu/FAR exhibits outstanding
durability and maintenance of superhydrophobicity grounded on the good self-similarity in micro-structure, chemical structure and composition both externally and internally. Consequently, the superhydrophobicity can be maintained or regenerated without difficulty even if superhydrophobic surface
has been damaged or fouled accidentally. Therefore, the method provides a new thought to prepare superhydrophobic material with robust durability and outstanding maintenance.
研究领域:
材料科学
·
表面化学
✓ 已验证
DOI
Journal of CO2 Utilization
·
2019
·
IF 5.189
Miao Wang,Xiaona Ren,Gang Yuan,Xiaopo Niu,Qingli Xu,Wenluan Gao,Shuaikang Zhu,Qingfa Wang
Element doping is an effective strategy to enhance the selectivity of electrochemical carbon dioxide reduction. In this work, a dendritic core-shell In-doped Cu@Cu 2 O catalyst is prepared by co-electrodeposition method on carbon fiber paper for selective electroreduction of CO 2 to CO. Faradaic efficiency of producing CO over this dendritic In-doped Cu@Cu 2 O reaches 87.6 ± 2.2% with total current density of 11.1 ± 0.85 mA cm −2 at −0.8 V vs RHE, which outperforms most of the reported Cu-based electrocatalysts. The excellent performance is mainly derived from charge re-distribution and the enhanced intrinsic activity due to the formation of In-doped Cu 2 O layer. Meanwhile, the Cu + /Cu 0 can be adjusted by tailoring the doped-In content. The relatively high ECSA and small charge transfer resistance are also conducive to improve the selectivity and activity. The oxyphilic In metal incorporated into the copper lattice can well stabilize the intermediate *COOH through enhancing interaction with O-ends of *COOH. This work provides a facile approach and a deep insight on design and synthesis of high efficiency hybrid electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 37
·2401530
·
IF 13
Zezhong Xie,Qiushi Wang,Hao Yang,Jin Feng,Jian Chen,Shuqin Song,Changgong Meng,Kun Wang,Yexiang Tong
The unavoidable and unpredictable surface reconstruction of metallic copper (Cu) during the electrocatalytic carbon dioxide (CO 2 ) reduction process is a double-edged sword affecting the production of high-value-added hydrocarbon products. It is crucial to control the surface facet reconstruction and regulate the targeted facets/facet interfaces, and further understand the mechanism between activity/selectivity and the reconstructed structure of Cu for CO 2 reduction. Based on the current catalyst design methods, a facile strategy combining chemical reduction and electro-reduction is proposed to achieve specified Cu(111) facets and the Cu(110)/(111) interfaces in reconstructed Cu derived from cuprous oxide (Cu 2 O). The surface facet reconstruction significantly boosted the electrocatalytic conversion of CO 2 into multi-carbon (C 2+ ) products comparing to the unmodified catalyst. Theoretical and experimental analyses show that the Cu(110)/(111)s interface between Cu(110) and a small amount of Cu(111) can tailor the reaction routes and lower the reaction energy barrier of C–C coupling to ethylene (C 2 H 4 ). The work will guide the surface facets reconstruction strategy for Cu-based CO 2 electrocatalysts, providing a promising paradigm to understand the structural variation in catalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 2
·105
·
IF 4.3
Jiuyu Chen,Chensheng Gao,Jingwen Chen,Fei Liu,Zhiwen Liu
The development of copper-based materials with a high efficiency and low cost is desirable for use in iodine (I2) remediation. Herein, Cu0-nanoparticles-functionalized, ZIF-8 (Zeolite Imidazole Framework-8)-derived, nitrogen-doped carbon composites (Cu@Zn-NC) were synthesized by ball milling and pyrolysis processes. The as-prepared composites were characterized using SEM, BET, XRD, XPS, and FT-IR analyses. The results showed that the morphology of ZIF-8 changed from a leaf-like structure into an irregular structure after the introduction of a copper salt and carbonization. The copper in the pyrolysis samples was mainly in the form of Cu0particles. The presence of an appropriate amount of Cu0particles could increase the specific surface area of Cu@Zn-NC. The subsequent batch adsorption results demonstrated that the as-fabricated composites showed high I2adsorption amounts (1204.9 mg/g) and relatively fast dynamics in an iodine–cyclohexane solution when the Cu content was 30% and the pyrolysis temperature was 600 °C, outperforming the other Cu-based materials. The isothermal adsorption followed both Langmuir and Dubinin–Radushkevich isotherm models, while the kinetics of I2adsorption followed a pseudo-second-order kinetic model. The activation energy (Eα) of the adsorbent was determined to be 47.2 kJ/mol, according to the Arrhenius equation. According to the experimental and DFT analyses, I2-Zn interactions and I2-Cu0chemisorption jointly promoted the elimination of iodine. In general, this study provided an operative adsorbent for the highly effective capture of iodine in solution, which might be worth applying on a large scale.
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
Micro & Nano Letters
·
2021
·Vol. 16
·期 9
·478-483
·
IF 1.102
Shi Li,Wenshuai Feng,Xiaohui Gao,Aimin Guo,Hongjian Li
An effective and rapid method for the detection of hydrazine hydrate is urgently needed as a result of its high toxicity and extensive use. Here, copper nanoparticles supported on carbon (written as: Cu NP/C) and copper oxide polycrystalline solids (written as: CuO PS), synthesized by calcining the same metal–organic framework at high temperature, were respectively used as electrode materials for electrochemical sensing hydrazine. The results show that the prepared Cu NP/C exhibits a better performance with a sensitivity of 0.1726 mA (mmol/L) −1 , a wider linear range of 0.1–2.4 mM and a lower detection limit of 0.0014 mmol·L −1 , compared to the obtained CuO PS. This can be reasonably explained by the lower copper valence state and its interaction with the carbon supports in Cu NP/C. Furthermore, the good selectivity and anti-interference ability from the Cu NP/C are also acquired for electrochemical detection of hydrazine.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Fazli Wahid,Shiyu Wang,Minhao Yan,Yaping Zhang,Xuezhi Dai,Qiang Tian
Sustainable methods for oil/water separation are highly important for worldwide industries due to their significant impact on different applications, such as treating industrial wastewater and addressing marine oil spills. However, current superhydrophobic membranes have difficulties in effectively removing organic matter from complex oily wastewater while maintaining large-scale oil/water separation. Herein, a copper mesh-based membrane was fabricated by a simple oxidation process, followed by sulfurization, and subsequently modified with stearic acid to develop a multifunctional superhydrophobic membrane. The fabricated membrane showed a high oil/water separation flux of ∼35,515 Lm −2 h −1 with an efficiency of >99.6 %. Meanwhile, the membrane exhibited recyclability, self-cleaning capability, mechanical durability, and stability under harsh conditions. The oil/water separation performance of the membrane is comparable to that of other advanced copper-based superhydrophobic membranes. Additionally, the membrane demonstrated Fenton-like rapid degradation of organic dyes, achieving a substantial degradation rate of 98.2 % within 24 min at 25 °C. The effects of sample dosage, H 2 O 2 content, initial pH of the solution, and reaction temperature were also investigated on the dye degradation. This work integrates catalysis with effective oil/water separation technologies, advancing the development of multifunctional membranes for wastewater treatment.
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
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 56
·期 4
·3062-3077
·
IF 3.553
Chen Xiangyang,Bao Rui,Yi Jianhong,Fang Dong,Tao Jingmei,Li Fengxian
Pure Cu matrix composite reinforced by Cr x O y -CNT hybrid was prepared via powder metallurgy in the present work. Microstructural analysis revealed that the formation of Cu 2 O nanoparticles at the interface is contributed to the interfacial bonding. The Cr x O y -CNT/Cu composite of 1.0 vol% hybrid reinforcement exhibited excellent ultimate strength of 402.6 MPa, which was ~ 90.0% higher than that of unreinforced Cu (211.9 MPa). Meanwhile, the ultimate strength of the hybrid reinforcement was much higher than those of the separate components, which were 238.4 MPa of 1.0 vol% CNT/Cu composite and 339.1 MPa of 1.0 vol% Cr x O y /Cu composite, respectively. Furthermore, the quantitative analysis indicated that Orowan looping system contributed the most to strength in Cr x O y /Cu and Cr x O y -CNT/Cu composites, whereas load transfer then contributed the most strength for CNT/Cu composite.
研究领域:
材料科学
·
力学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Chi Zhang,Man Fang,Yuanbo Gao,Yunchao Li,Louzhen Fan,Xiaohong Li
Oxidase-mimicking nanozymes with specificity for catalyzing oxidation of aromatic amines are of great significance for recognition of aromatic amines but rarely reported. Herein, Cu-A nanozyme (synthesized with Cu2+ as a node and adenine as a linker) could specifically catalyze oxidation of o-phenylenediamine (OPD) in Britton–Robinson buffer solution. Such a specific catalytic performance was also corroborated with other aromatic amines, such as p-phenylenediamine (PPD), 1,5-naphthalene diamine (1,5-NDA), 1,8-naphthalene diamine (1,8-NDA), and 2-aminoanthracene (2-AA). Moreover, the presence of salts (1 mM NaNO2, NaHCO3, NH4Cl, KCl, NaCl, NaBr, and NaI) greatly mediated the catalytic activity with the order of NaNO2 < blank ≈ NaHCO3 < NH4Cl ≈ KCl ≈ NaCl < NaBr < NaI, which was due to anions sequentially increasing interfacial Cu+ content via anionic redox reaction, while the effect of cations was negligible. With the increased Cu+ content, Km decreased and Vmax increased, indicating valence-engineered catalytic activity. Based on high specificity and satisfactory activity, a colorimetric sensor array with NaCl, NaBr, and NaI as sensing channels was constructed to identify five representative aromatic amines (OPD, PPD, 1,5-NDA, 1,8-NDA, and 2-AA) as low as 50 μM, quantitatively analyze single aromatic amine (with OPD and PPD as model analysts), and even identify 20 unknown samples with an accuracy of 100%. In addition, the performance was further validated through accurately recognizing various concentration ratios of binary, ternary, quaternary, and quinary mixtures. Finally, the practical applications were demonstrated by successfully discriminating five aromatic amines in tap, river, sewage, and sea water, providing a simple and feasible assay for large-scale scanning aromatic amine levels in environmental water samples.
研究领域:
生物化学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2023
·
IF 17.1
Jianglong Kong,Rui Zou,Runxuan Chu,Nan Hu,Jiawen Liu,Yuting Sun,Xiaohan Ge,Meiru Mao,Hongrui Yu,Yi Wang
Ischemic stroke is one of the major causes of death and disability worldwide, and an effective and timely treatment of ischemic stroke has been a challenge because of the narrow therapeutic window and the poor affinity with thrombus of the thrombolytic agent. In this study, rPZDCu, a multifunctional nanoparticle (NP) with the effects of thrombolysis, reactive oxygen species (ROS) scavenging, and neuroprotection, was synthesized based on an ultrasmall Cu4.6O NP, the thrombolytic agent rt-PA, and docosahexaenoic acid (DHA), which is a major component of the neuronal membrane. rPZDCu showed strong thrombus-targeting ability, which was achieved by the platelet cell membrane coating on the NP surface, and a good thrombolytic effect in both the common carotid artery clot model and embolic middle cerebral artery occlusion (MCAO) model of rats. Furthermore, rPZDCu exhibited a good escape from the phagocytosis of macrophages, effective promotion of the polarization of microglia, and efficient recovery of neurobiological and behavioral functions in the embolic MCAO model of rats. This is a heuristic report of (1) the Cu0/Cu+ NP for the treatments of brain diseases, (2) the integration of DHA and ROS scavengers for central nervous system therapies, and (3) diselenide-based ROS-responsive NPs for ischemic stroke treatments. This study also offers an example of cell membrane-camouflaged stimuli-responsive nanomedicine for brain-targeting drug delivery.
研究领域:
医学
·
药学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 24
·2000
·
IF 4.4
Zhipeng Yu,Pengxu Yan,Yilei Sheng,Chengwei Zhang,Zhun Qiao,Qikui Fan,Chuncai Kong,Zhimao Yang
Copper-based materials, renowned for their redox versatility and conductivity, have extensive applications in electrochemical sensing. Herein, we construct stable Cu+/Cu2+interfaces within dual-valence copper nanostructures to achieve enhanced sensitivity in glucose sensing. By employing a hydrolysis method to tune Cu2+/Cu+ratios precisely, we achieved an optimal electrochemical interface with heightened stability and reactivity. The Cu+/Cu2+interface-based flexible electrode demonstrated excellent glucose sensitivity (332.4 µA mmol/L−1cm−2at +0.65 V), wide linear range (up to 10 mmol), a low detection limit of 1.02 nmol/L, and strong selectivity, including detection in human sweat, making this study significant for advanced electrochemical sensors.
研究领域:
材料科学
·
生物医学工程
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhongcheng Yang,Yue Yang,Yunna Li,Junwen Qi,Zhigao Zhu,Yujun Zhou,Jiansheng Li
A novel hollow fiber membrane containing a carbon-coated CuO x (CuC-HFM) was prepared for in-situ CO 2 electrochemical reduction to ethanol during wastewater treatment. The ratio of Cu-based metal organic framework/carbon black of 1/1 was relatively optimal (Cu 1 C 1 -HFM) due to higher pure water permeance (24.62 L m −2 h −1 bar −1 ), better hydrophilicity (contact angle of 60.00°), and more ethanol yield (165.22 mg L −1 m −1 ) at −2.5 V with KOH as electrolyte. For control group (Cu 2 C 1 -HFM and Cu 1 C 2 -HFM), they were 76.50°/89.10°, 3.90/4.42 L m −2 h −1 bar −1 , 64.85/57.32 mg L −1 m −1 , respectively. The peaks of Cu (002) crystal plane, Cu 2+ electronic orbits, covalent bonds between C and O, and CuO x were appeared on prepared membrane. The CuO x could strongly adsorb CO and subsequently carbon shell could selectively produce HOCCH and HOCHCH, which were benefit for CO 2 electro reduction to ethanol. Therefore, the Cu 1 C 1 -HFM owned higher ethanol production (88.50 g L −1 m −2 h −1 ) during filtrating anaerobic supernatant. Meanwhile, the membrane could reject 97.2 % COD with only 14.7 % membrane flux loss. The membrane without bias suffered 27.1 % flux loss. This system gave a new thought for CO 2 electro reduction and the CuC-HFM had a promising employment in anaerobic bioreactor in the future.
研究领域:
环境科学
·
材料科学
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jiayu Feng,Lijuan Jia,Fei Wang,Xin Sun,Ping Ning,Chi Wang,Yuan Li,Kai Li
In this work, we report a novel urea-modified copper-based material (XUrea@Cu) obtained by directly calcinating a mixture of urea and copper nitrate. This material enables the efficient purification of H 2 S under dry and anaerobic conditions. The performance test results showed that the H 2 S capacity of the optimal adsorbent (2Urea@Cu) could reach 364.2 mg(H 2 S)∙g sorbent -1 , which is much superior to those of other adsorbents in the literature. Further study demonstrates that the ultra-desulfurization performance of 2Urea@Cu is mainly attributed to the extensive alkaline site, the high concentrations of active oxygen, and the abundance of oxygen vacancy; which are quite effective for capturing H 2 S (acidic and strong reducibility). Interestingly, the deactivation adsorbent (De-2Urea@Cu) is mainly composed of high-purity CuS, which means that the Urea@Cu adsorbent can simultaneously achieve efficient purification of H 2 S and recovery of sulfur resources since CuS is a valuable product. In addition, in-situ FT-IR and theoretical calculation results indicate that H 2 S molecules dissociate on the CuO(1 1 1) surface by stepwise dehydrogenation, while S combines with adjacent Cu to form CuS. The consumption of active components (CuO) and the accumulation of reaction products (CuS) are the primary reasons for the deactivation of adsorbents. Considering the simple preparation process, low cost, and excellent H 2 S adsorption activity, these urea-modified copper-based materials are very promising H 2 S adsorbents.
研究领域:
材料科学
·
环境科学
✓ 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）