JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 20
·12380-12389
·
IF 2.599
Li Jia-Chuang,Feng Fang,Yang Si-Han,Gu Yu-Ren,Xue Huai-Guo,Guo Sheng-Ping
Cu 3 Mo 2 O 9 nanorods (NRs) have been prepared via a facile hydrothermal method with subsequent heat treatment. The sample is characterized by the XRD, SEM, TEM, and XPS techniques. The results indicate that Cu 3 Mo 2 O 9 NRs crystallize in the orthorhombic space group Pnma and have the diameters at around 100 nm. As the anode material for lithium-ion batteries, Cu 3 Mo 2 O 9 NRs can deliver an initial discharge capacity of 1209 mAh/g at a current density of 300 mA/g in the potential window of 0.005–3 V, and a reversible capacity of 440 mAh/g can be maintained after 400 cycles. Furthermore, Cu 3 Mo 2 O 9 NRs still have the capacity of 437 mAh/g even at 1 A/g. The improved electrochemical performance of Cu 3 Mo 2 O 9 can be attributed to the effect of enhanced contact area and shortened Li + ions’ transport distance between the Cu 3 Mo 2 O 9 NRs and the electrolyte.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhenhao Xia,Xiaoyong Tian,Peipei Xu,Baijie Cheng,Hongyao Xu,Shanyi Guang
In this era of high drug resistance, there is an urgent need for novel antimicrobial agents and strategies to achieve smarter sterilization effects. However, developing an environmentally friendly, controllable, and self-cleaning smart antimicrobial material remains a formidable challenge. In this work, a smart antimicrobial nanoplatform composed of Cu 3 Mo 2 O 9 and MoS 2 has been successfully designed and synthesized. The computational findings reveal that, owing to the interfacial coupling between the two substances at the solid junction, this architecture can effectively absorb near-infrared light, significantly reduce migration resistance, and improve carrier separation efficiency. Empirical observations demonstrate that with a sample concentration of 100 μg/mL, under near-infrared (NIR) laser irradiation, the microenvironmental temperature proximal to the bacteria can be swiftly elevated from 28.6 °C to in excess of 50 °C within a mere 6 min. The overall photothermal conversion efficiency is 32.6 %, and it exhibits an active oxygen level nearly 5 times higher than that of Cu 3 Mo 2 O 9 . Furthermore, the permeability of the cell membrane was greatly improved with the increased temperature, which is beneficial for the generated reactive oxygen species (ROS) entering the bacterial cells. After synergistic antimicrobial treatment, the antibacterial rate against Escherichia coli can reach over 99 %. More importantly, this nano-platform features a unique ’activation’ mechanism that uses NIR as an ’activation switch’ to selectively toggle between ’passive defense,’ ’secondary sterilization,’ and ’active attack’ antibacterial modes as needed. Upon interaction with aqueous environments, its reusability and favorable biocompatibility with terrestrial and aquatic life promise to facilitate the intelligent eradication of deleterious microorganisms in aquatic systems via the diurnal cycle of sunrise and sunset. This is highly significant for the ongoing management and maintenance of public resources such as amusement parks, artificial fish ponds, and urban water features.
研究领域:
材料科学
·
微生物学
·
纳米医学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jinyun Liao,Yujie Wu,Youxiang Shao,Yufa Feng,Xuefeng Zhang,Wanling Zhang,Junhao Li,Ming Wu,Huafeng Dong,Quanbing Liu,Hao Li
Catalytic methanolysis of ammonia borane (AB) is an integrated hydrogen storage-production technology with bright prospects; the development of robust and cheap catalysts is crucial for its wide applications. In this study, we developed heterostructured Cu 3 Mo 2 O 9 /NiMoO 4 hollow spheres comprised of nanoplatelets as catalysts for AB methanolysis. The Cu 3 Mo 2 O 9 /NiMoO 4 catalyst with the optimal Cu/Ni ratio exhibited robust reactivity with a turnover frequency (TOF) of 62.1 mol hydrogen min −1 mol cat −1 , which is superior to other precious-metal-free catalysts ever reported in the literature. Based on the theoretical calculation results, it was found that the d band center of the heterostructured Cu 3 Mo 2 O 9 /NiMoO 4 catalysts exhibited an up shift compared to those of single Cu 3 Mo 2 O 9 and NiMoO 4 , which was favorable for the chemisorption of the reactants. In addition, it was revealed that the active Ni and Cu sites in Cu 3 Mo 2 O 9 /NiMoO 4 catalysts were responsible for the adsorption and activation of CH 3 OH and AB, respectively. The rate-determining step of AB methanolysis over Cu 3 Mo 2 O 9 /NiMoO 4 catalyst was identified, and a possible reaction mechanism was proposed. This study may provide a deeper understanding of the adsorption and activation behaviors of methanol and AB, cooperative roles of different active sites on the heterostructured catalyst, as well as the reaction mechanism, conducive to the rational design of inexpensive and high-performing catalysts for AB methanolysis for hydrogen production.
研究领域:
催化化学
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材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xia Li,Qiuyue Chen,Guoguo Wang,Xuguang An,Jing Zhang,Qian Liu,Lisi Xie,Xiaolei Li,Weitang Yao,Qingquan Kong
Electrochemical nitrite (NO2–) is a promising technology for NO2– removal and a sustainable method for generating valuable ammonia (NH3), but this process is intricate and generates other byproducts. In this work, we propose a facile and low-cost method for the preparation of a Cu3Mo2O9 nanosheet array, which can serve as an efficient electrocatalyst for the reduction of NO2– to NH3. The morphology of Cu3Mo2O9 can be adjusted by controlling the synthesis conditions. In neutral solution, Cu3Mo2O9 achieves a high NH3 yield of 30.46 mg h–1 cm–2 and an outstanding faradaic efficiency of 98.6% with excellent long-term electrochemical stability for NO2– reduction. Density functional theory calculations further reveal the key role of the Cu3Mo2O9 (202) surface and its possible reaction pathways in the electrocatalytic reduction of nitrite.
研究领域:
材料科学
·
电化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Bala Ismail Adamu,Attia Falak,Yi Tian,Xinghua Tan,Xiangmin Meng,Peipei Chen,Hanfu Wang,Weiguo Chu
High sensitivity, low limit of detection (LOD), and short response and recovery times at room temperature (RT) are critical for gas sensors. For NO2, different binary metal oxide-based sensors were developed to achieve superior performance at elevated temperatures instead of RT. Herein, we report on CuO@CuO and Cu3Mo2O9@CuO sensors with CuO and Cu3Mo2O9 micro/nanorods vertically aligned on the CuO layers, which were directly fabricated using a facile, low-cost, and catalyst-free chemical vapor deposition (CVD) technique. Their sensing performance tests revealed that the Cu3Mo2O9@CuO p–p heterojunction sensors exhibited a high response of 160% to 5 ppm NO2, an excellent sensitivity of 50% ppm–1, a low LOD of 2.30 ppb, a short response time of 49 s, and a rapid recovery of 241 s at RT, obviously better than those for CuO@CuO sensors. The superior performance of Cu3Mo2O9@CuO sensors could be attributed to the Schottky heterojunction formed between p-Cu3Mo2O9 micro/nanorods and p-CuO films, the catalytic effect, and the anisotropic nature of Cu3Mo2O9 micro/nanorods. This study not only provides a simple, low-cost, and batchable fabrication method of homo/heterojunction sensors with micro/nanorods vertically aligned on films but also opens an avenue for sensor design by tuning the Schottky barrier height to enhance RT performance.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Thabang Mokoba,Yajie Liu,Yue Wu,Tian Cheng Zhang,Shaojun Yuan
Significant progress has been made in the development of membranes characterized by high permeation flux, special wettability, selectivity, and stability during oily wastewater separation. However, more research is needed in multitasking membranes. Herein, we introduce a facile strategy of fabricating a superhydrophilic and underwater superoleophobic agave-angustifolia-like Cu3Mo2O9 nanoplate-coated copper mesh membrane via subsequent chemical oxidation, hydrothermal deposition, and calcination methods. The synergistic effect of the hierarchical structure and photocatalytic activity of the Cu3Mo2O9 coating endowed the as-fabricated membrane with superwettability and self-cleaning ability, resulting in high permeation flux (up to 3503.18 L·m–2·h–1 for surfactant-free emulsions and 917.20 L·m–2·h–1 for surfactant-stabilized emulsions) and low oil residues in the filtrate (COD value of 11.4 mg L–1 for surfactant-free emulsions and 86.8 mg L–1 for surfactant-stabilized emulsions) during oil-in-water emulsion separation, as well as photocatalytic dye degradation capabilities for methylene blue (92.4%) and rhodamine B (68.6%). Furthermore, the as-fabricated membrane exhibited favorable chemical stability and abrasive resistance. The strategy presented in this work provided a method to produce a durable membrane for efficient oil–water separation with photocatalytic properties and can withstand harsh environments.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
Jiaxin Lv,Xinli Chen,Susu Chen,He Li,Hong Deng
In this paper, an ultrasensitive photoelectrochemical sensor was developed for the detection of oxytetracycline , which was based on BaTiO 3 sensitized Cu 3 Mo 2 O 9 nano-composites with excellent visible-light photoelectrochemical activity. Cu 3 Mo 2 O 9 nanocrystals (NCs) with popsicle-like morphologies were synthesized through hydrothermal method and showed a very high photoelectrochemical signal. To achieve larger photocurrent density, nanostructured BaTiO 3 was then deposited on the surface of Cu 3 Mo 2 O 9 photocathodes, which led to 3-fold enhancement of the photocurrent as compared to pristine Cu 3 Mo 2 O 9 NCs. In order to obtain the specific response to oxytetracycline, oxytetracycline aptamer was fixed on the Au/BaTiO 3 /Cu 3 Mo 2 O 9 /FTO. Under visible light irradiation , the obtained aptamer/Au/BaTiO 3 /Cu 3 Mo 2 O 9 /FTO exhibited high sensitivity, good selectivity , outstanding reproducibility and low cost for detecting oxytetracycline. Furthermore, there was a linear relationship between detected signal and the oxytetracycline in the concentration range from 5 × 10 −10 to 10 −7 M, with a detection limit (3 S/N) of 4.6 × 10 −11 M under the optimal conditions. It is expected that this new photoelectric active material may have potential applications in biosensors, photocatalysis and other related fields.
研究领域:
材料科学
·
分析化学
·
环境科学
·
生物传感器
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 16
·12015-12024
·
IF 3.84
Juan Xia,Le Xin Song,Wei Liu,Yue Teng,Qing Shan Wang,Li Zhao,Mao Mao Ruan
We developed a simple and facile method for preparing two types of transition metal molybdates: AMoO4 (A = Ni and Zn) and B3Mo2O9 (B = Cu and Zn). Initially, a hydrothermal reaction at 383 K for 10 h in an aqueous solution of ammonium molybdate tetrahydrate (AMT) and metal acetates (MAc2, M = Ni, Cu and Zn) was carried out to synthesize their precursors: NiMoO4·xH2O, ZnMoO4·0.8H2O, Cu3(OH)2(MoO4)2 and Zn3(OH)2(MoO4)2. Subsequently, AMoO4 with a 1D structure and B3Mo2O9 with a 3D structure were successfully constructed by sintering the precursors at 873 K for 3 h in air. Our result presented the first evidence that the generation of α-ZnMoO4 and Zn3Mo2O9 is dependent on the initial concentration of AMT or Zn(Ac)2. More importantly, a highly monodisperse Cu3Mo2O9 micropompon structure was successfully created by an ethylenediaminetetraacetic acid (H4Y)-mediated hydrothermal route and a subsequent sintering process. We considered that H4Y, a strong competitive chelating ligand, played a significant role in prohibiting the formation of the intermediate (NH4)2Cu(MoO4)2, thereby not only producing a monodisperse structure of Cu3(OH)2(MoO4)2 but also reducing the size of the structure by forming a stable complex: CuY. Three independent experiments: photocatalysis, photocurrent response and lithium storage were performed to discuss several possible applications of the as-obtained Cu3Mo2O9 micropompons. Our data demonstrated that the Cu3Mo2O9 material exhibited excellent photocatalytic efficiency for the degradation of Congo red under visible light irradiation. Also, the time-dependent photoresponse of the Cu3Mo2O9 gave a very high ratio (about 171) of light current to dark current and a stable photocurrent density, which were a reflection of a high concentration of photogenerated electron–hole pairs. Further, the material indicated good charge–discharge stability and high coulombic efficiency in lithium-ion batteries even during the 100 cycles. We believe that the present study represents a significant step in the development of transition metal molybdates.
研究领域:
材料科学
·
无机化学
·
纳米科技
·
能源材料
·
光催化
·
电化学储能
✓ 已验证
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2026
·
IF 7.5
Zhan-jun Yang,Mi Li,Yi Wu
Cu 3 Mo 2 O 9 enables milder thermite combustion with sustained heat output. • Cu-O-Mo bonds suppress early Mo vaporization and gas-phase mass transfer. • Complex oxide structure enables controllable thermite energy release. In this study, copper-rich molybdate Cu 3 Mo 2 O 9 was synthesized via a hydrothermal-annealing route and employed as a foundational oxidizer to construct Al/Cu 3 Mo 2 O 9 composite thermites. A systematic comparative investigation was conducted against Al/(CuO + MoO 3 ) hybrid thermites regarding morphological characteristics, structural properties, combustion behavior, pressure output, thermal release profiles, and reaction pathways. The results demonstrate that the unique three-dimensional framework structure of Cu 3 Mo 2 O 9 effectively immobilizes molybdenum species through stable Cu-O-Mo bonds. This distinctive spatial configuration endows Al/Cu 3 Mo 2 O 9 with elevated activation energy, prolonged ignition delay, and reduced pressurization rates, manifesting a “mild combustion” characteristic with sustained and steady energy release. In contrast, Al/(CuO + MoO 3 ) exhibits violent deflagration behavior, significantly enhanced pressurization rates, and instantaneous heat concentration, attributable to the low-temperature sublimation of MoO 3 and multi-component selective reaction mechanisms. Analysis of pyrolysis and combustion products further confirms that divergent microscale mass transfer pathways constitute the primary origin of macroscopic energy release disparities between the two thermite systems. This study elucidates how complex metal oxide structures intrinsically regulate aluminothermic reaction kinetics and energy output, providing novel design strategies for high-performance, energy-tunable advanced thermite materials and broadening their prospects in thermal engineering applications.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）