LANGMUIR
·
2021
·
IF 3.882
Yong Yang,Ming Li,Chao Zhou,Kexin Zhou,Jian Yu,Yanjie Su,Nantao Hu,Yafei Zhang
Rational design and scalable construction of antibacterial mediators based on unique graphene architectures with highly efficient antibacterial ability and significant biocompatibility are challenging. Herein, sulfur-doped graphene skeletons uniformly decorated with metal oxide nanoparticles were designed and constructed via one-step laser-induced microexplosive techniques and demonstrated for the first time as highly efficient antibacterial agents. The optical density and flat colony counting methods demonstrated that the as-designed laser-induced MoOx/sulfur-doped graphene hybrids exhibited exceptional activity inhibition of Escherichia coli and Staphylococcus aureus. Moreover, the bacteria were treated with an impressive laser-induced MoOx/sulfur-doped graphene colloidal solution of concentration as low as 1 mg/mL for 4 h, leading to an excellent viability loss of 85% for the two bacteria. Cell toxicity experiments proved that the biological toxicity of laser-induced MoOx/sulfur-doped graphene to pig sperm cells was negligible. The molecular dynamics calculations proposed that the intrinsic interaction with N-acetylglucosamine at the cell wall and the high-efficiency synergistic effect of sulfur-doped graphene and MoOx played the key role in inhibiting the viability of bacteria. This work provides new insights for a novel structure design and opens up a potential route to construct antibacterial agents with high efficiency for clinical application.
研究领域:
材料科学
·
生物学
·
医学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fayi Jin,Xiaoli Yang,Jia Yang,Yang Lei,Wenfan Xu,Wei Jiang,Zhen Ma,Gemeng Liang,Haoxi Ben,Xingyun Li
Oxygen vacancies in oxides are core parameters determining the catalytic performance in various reactions. This study investigated the influence of oxygen vacancies of MoO x catalysts on the reverse water gas shift (RWGS) reaction to gain a deep insight into the structure–function relationship. A distinct volcano-shaped trend was observed among MoO x catalysts with different amounts of oxygen vacancies. Through comprehensive characterizations and steady-state kinetic analysis, an optimal concentration of oxygen vacancies was identified to not only facilitate the adsorption and activation of CO 2 but also restrain the formation of by-product CH 4 . In-situ characterizations combined with DFT calculations uncovered a formate-involved reaction pathway over the oxygen vacancies structured MoO x catalyst, with the hydrogenation of formate identified as the rate-determining step. These findings not only showcase the potential of Mo-based oxides in CO 2 hydrogenation reactions but also provide fundamental insights into the role of oxygen vacancies in shaping catalytic behavior.
研究领域:
催化化学
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材料科学
·
理论计算化学
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产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Linpin Luo,Wengang Cai,Wenqiao Su,Meilin Wang,Liang Zhang,Jing Sun,Jianlong Wang
The nanomaterials-functionalized composite packaging film with antimicrobial performance has attracted more and more research interests. However, designing the multi-mode synergistic composite film for efficient and intelligent antibacterial is still a challenge. In this work, a Fe-MoO x functionalized chitosan composite film (CS/FM) was designed by doping the Fe-MoO x into chitosan film. CS/FM film inherited excellent photothermal performance and photothermal-enhanced oxidase-like activity of Fe-MoO x , which endow CS/FM film with superior antimicrobial ability. The optimal composite film (CS/FM 0.2 ) able to killed ≥98.87% of S. aureus and ≥98.26% of E. coli , and could significantly inhibit the growth of P. expansum and P. italicum . Besides, CS/FM 0.2 film also showed good water vapor permeability (0.71 × 10 −10 g m −1 s −1 Pa −1 ) and tensile strength (58.16 MPa). Low hemolysis rate (≤ 4.91%), high cell viability (≥ 90.32%), and the normal body organs after being treated with Fe-MoO x verified the biosafety of CS/FM film. The tangerine preservation results indicated that CS/FM 0.2 film could extend the shelf life of tangerine by at least 9 days and prevent the loss of tangerine nutrients. Our work boosted the development of designing composite packaging film with multi-mode synergistic antimicrobial effect via nanomaterials functionalized for food preservation.
研究领域:
材料科学
·
食品科学
·
生物技术
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Wenhui Ai,Ge Chen,Jiayao Chen,Yao Jin,Xiufeng Wang,Ting Zhou,Zhiqing Zhang,Fang Wang,Guodong Zhang
The abuse of antibiotics has seriously threatened human health and living environment. Nevertheless, the detection of quinolones is currently mainly performed by high-cost and cumbersome means, such as High-Performance Liquid Chromatography (HPLC). Herein, we reported a novel method based on copper-doped MoO x nanoparticles (Cu-MoO x NPs) with peroxidase-like enhancement activity for the easy preparation, sensitive and rapid visualization of quinolone detection. Cu-MoO x NPs can make the chromogenic substrate 3,3′,5,5′-Tetramethylbenzidine (TMB) change from colorless to blue. Moreover, the addition of quantitative quinolone antibiotics can significantly accelerate the TMB oxidation reaction. Based on this phenomenon, a colorimetric method for detecting quinolone antibiotics was established with a good linear relationship ranging from 1 × 10 −6 M to 1.3 × 10 −4 M, and the detection limit was 0.310 μM for ciprofloxacin (CIP) and 0.520 μM for levofloxacin (LVFX). Furthermore, the mechanism was also explored, and the results showed that the peroxidase-like activity of Cu-MoO x NPs was probably derived from the generated OH, 1 O 2 , oxygen vacancies and partially reduced Cu + , and on the other hand was derived from quinolone antibiotics and nanozymes electrostatic interaction between them.
研究领域:
生物化学
·
环境科学
·
医学检测
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Daobin Tang,Xuebin Lin,Qi Zhang,Zhenni Wang,Yuhang Liu,Yanqiao Jin,Xinru Wu,Cejun Hu,Pei Yuan
Lignin is continuously investigated by various techniques for valorization due to its high content of oxygen-containing functional groups. Catalytic systems employing hydrolysis‑hydrogenolysis, leveraging the synergistic effect of redox metal sites and acid sites, exhibit efficient degradation of lignin. The predominance of either hydrolysis or hydrogenolysis reactions hinges upon the relative activity of acid and metal sites, as well as the intensity of the reductive atmosphere. In this study, the Pd-MoO x /TiO 2 catalyst was found to primarily catalyze hydrolysis in the lignin depolymerization process, attributed to the abundance of moderate acidic sites on Pd and the redox-assisted catalysis of MoO x under inert conditions. After subjecting the reaction to 240 °C for 30 h, a yield of 48.22 wt% of total phenolic monomers , with 5.90 wt% consisting of diphenols, was achieved. Investigation into the conversion of 4-propylguaiacol (4-PG), a major depolymerized monomer of corncob lignin, revealed the production of ketone intermediates, a phenomenon closely linked to the unique properties of MoO x . Dehydrogenation of the propyl is a key step in initiating the reaction, and 4-PG could be almost completely transformed, accompanied by an over 97 % of 4-propylcatechol selectivity. This distinctive system lays a new theoretical groundwork for the eco-friendly valorization of lignin.
研究领域:
化学工程
·
催化科学
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产品关联
DOI
PubMed
高影响因子
FUEL
·
2026
·
IF 7.8
Jian Wang,Yu Zhao,Tianhua Yang,Xinyong Diao,Yao Tong,Shuang Cui,Bingshuo Li,Rundong Li
Guaiacol, an important lignin-derived compound, presents a central challenge in the efficient upgrading of biomass into sustainable biofuels. Conventional conversion processes are often limited by dependence on corrosive acids, noble metals, or external hydrogen sources, leading to increased costs and safety concerns. In this study, we developed a hydrothermal conversion method that enables guaiacol to catechol transformation without the need for external hydrogen or inorganic acids. This was accomplished using transition-metal-based n Ni– y MoO x /Nb 2 O 5 catalysts capable of cleaving C–O bonds. The results showed that the Ni/MoO x ratio was critical in governing the formation of the NiMoO 4 spinel phase while inducing a strong metal–support interaction (SMSI) that directly affected the surface acidity and oxygen vacancy concentration. Using the 5Ni-5MoO x /Nb 2 O 5 catalyst (Ni/Mo = 1:1) at 300 °C for 2 h, 26.15% guaiacol conversion was achieved, with catechol selectivity 12.9-fold higher than in the noncatalytic system. This superior performance originated from a synergistic effect between the moderate acid strength and the high concentration of defective oxygen vacancies, which collectively drove the selective cleavage of the O–CH 3 bond. The produced catechol serves as a pivotal platform intermediate for synthesizing renewable fuel additives and advanced biofuel components. This study presents a sustainable catalyst design strategy for converting lignin resources into valuable biofuel precursors.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Wen-Yuan Zhou,Zhi-Wei Yao,Jun-Hao Zheng,Jun-Peng Fan,Chao-Yu Xiang
Perovskite quantum dot light-emitting diodes (Pe QLEDs) hold significant application potential in next-generation displays, but the device performance remains compromised by the acidity and hygroscopicity of the widely adopted hole injection layer (HIL), poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). Molybdenum oxide (MoOx) has garnered significant attention due to its excellent environmental stability; however, there is still a lack of research on the influence of different molybdenum ion contents on the physicochemical properties of molybdenum oxide itself and its application as a hole injection layer (HIL) in red Pe QLEDs. In this work, three MoOx solutions with the conduction band level from −4.70 to −5.15 eV were prepared by modulating the H2O2 ratio to regulate the Mo5+ and Mo6+ content, and different MoOx were adopted as HIL to systematically investigate the influence of energy landscapes on device performance. A gradient conduction band energy was realized, and optimal hole injection was obtained when the ratio of Mo5+ is 48.1%, with an external quantum efficiency (EQE) of 28.6% realized. This efficiency is comparable to that of PEDOT:PSS-based devices and represents the highest value reported for MoOx-based red Pe QLEDs. Besides, the operational stability was enhanced from 3.0 to 10.6 h, and after being stored for 48 h in a high-humidity environment, the half-life (T50) remained above 3.0 h, far exceeding that of PEDOT:PSS-based devices, which nearly lost their operational stability. The proposed MoOx-based Pe QLEDs exhibited significantly improved operational and storage stabilities.
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Wenhui Zhou,Boxu Dong,Shan Zhu,Fengxiang Ma,Ziqi Si,Likui Feng,Liang Zhang,Yue Zhao,Jiantao Zai,Xuefeng Qian
A Mo 2 C-bridged MoO x /N-doped carbon heterostructure (MoO x -Mo 2 C-N@C) synthesized via one-step calcination demonstrates exceptional photocatalytic activity for sulfur hexafluoride (SF 6 ) degradation, achieving a remarkable capacity of 2.12 mmol/g under UV irradiation, tenfold higher than commercial MoO 2 . The enhanced performance originates from synergistic interfacial electronic modulation: Mo 2 C channels create electron-deficient Mo sites that facilitate SF 6 adsorption and S–F bond cleavage, while N-doped carbon matrices promote charge separation and protect active centers against fluorine poisoning. This work presents an effective metal–carbon hybrid strategy for activating super-stable molecules through rational interface engineering.
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 12
·1-8
·
IF 5.479
Meng Xiangying,Chen Xiao,Wu Weihua,Zheng Wei,Deng Haohua,Xu Luyao,Chen Wei,Li Zhulai,Peng Huaping
Molybdenum oxide quantum dots (MoO x QDs) were synthesized by a one-pot method and used as a versatile probe in an electrochemiluminescent (ECL) immunoassay of the non-small cell lung cancer biomarker cytokeratin 19 fragment 21–1 (CYFRA21-1) as a model analyte. The MoO x QDs exhibited stable and strong cathodic green ECL, with an emission peak at 535 nm, in the presence of K 2 S 2 O 8 within the potential range of −2.0 to 0 V. On exposure to CYFRA21-1, the ECL decreases because of the immunoreaction between CYFRA21-1 and its antibody which generates a barrier for electron transfer. The determination of CYFRA21-1 with favorable analytical performances was successfully realized under the optimal conditions. ECL decreases linearly in the 1 pg mL −1 to 350 ng mL −1 CYFRA21-1 concentration range, and the detection is as low as 0.3 pg mL −1 . Excellent recoveries from CYFRA21-1-spiked human serum indicate that the assay can be operated under physiological conditions.
Schematic representation of the fabrication of molybdenum oxide quantum dots (MoO x QDs) and the electrochemiluminescent (ECL) immunoassay based on the use of the MoO x QDs ECL probe for cytokeratin 19 fragment 21–1 (CYFRA21-1).
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DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2021
·
IF 7.92
Jian Sheng,Wen-Cui Li,Yue-Ran Wang,Wen-Duo Lu,Bing Yan,Bin Qiu,Xin-Qian Gao,Shi-Qun Cheng,Lei He,An-Hui Lu
Styrene and benzaldehyde are manufactured by energy-intensive direct dehydrogenation and an intermittent liquid chlorine oxidation batch process, respectively. The coproduction of styrene and benzaldehyde through selective oxidation of ethylbenzene is an environmentally friendly and economically feasible alternative. However, it is hard to control the selectivity for styrene or benzaldehyde as a result of deep oxidation reactions. Here, we report an efficient selective oxidation catalyst, boron nitride-supported monomeric MoO x (MoO x /BN), over which styrene and benzaldehyde can be selectively coproduced. Structure characterization and catalytic evaluation reveal that the MoO x /BN catalyst is conducive to the generation of benzaldehyde and less formation of CO x than for monomeric MoO x supported on inert silica. Based on the kinetic analysis, over MoO x /BN catalyst, styrene is the primary product and benzaldehyde is the major by-product in the subsequent oxidation reaction. The boron hydroxy groups of the MoO x /BN catalyst are involved in the reaction network, which could regulate the reaction behavior of monomeric MoO x species; thus the reaction generates more benzaldehyde.
研究领域:
化学工程
·
催化科学
·
环境化学
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产品关联
DOI
高影响因子
Catalysts
·
2023
·Vol. 13
·期 11
·1426
·
IF 3.9
Shihu Zhu,Tiantian Liu,Shuang Yu,Huijing Yang,Qimeng Sun,Jin You Zheng
The hydrothermal method is a frequently used approach for synthesizing HER electrocatalysts. However, a weak tolerance to high temperature is an intrinsic property of carbon cloth (CC) in most situations, and CC-based catalysts, which require complex technological processes in low-temperature environments, exhibit weak stability and electrochemical performance. Hence, we provide a new solution for these issues. In this work, MoO3-NiSxfilms of 9H5E-CC catalysts are synthesized, first through electrodeposition to form Ni particles on CC and then through a hydrothermal reaction to reform the reaction. The advantages of this synthetic process include mild reaction conditions and convenient operation. The obtained MoO3-NiSxfilm presents excellent catalytic activity and stability for HER. MoO3-NiSxfilm requires only a low overpotential of 142 mV to drive 10 mA cm−2for HER in 1.0 m KOH, and the obtained 9H5E-CF film only needs 294 mV to achieve 50 mA cm−2for OER. Remarkably, they also show excellent OER, HER, and full water splitting long-term electrochemical stability, maintaining their performance for at least 72 h. This work can be expanded to provide a new strategy for the fabrication of stable, high-performing electrodes using simple, mild reaction conditions.Keywords:hydrothermal reaction;MoO3-NiSxfilm;electrodeposition and reforming reaction;anodizing
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Linpin Luo,Meilin Wang,Wenqiao Su,Junchen Zhuo,Liang Zhang,Wenxin Zhu,Wentao Zhang,Rong Wang,Jianlong Wang
Antimicrobial packing showed great potential in extending the shelf life of food. However, developing a new biocomposite film with an intelligent and efficient antimicrobial performance is still desirable. Herein, a Fe-MoOx encapsulated with curcumin (Cur) filled chitosan-based composite film (CCF films) was prepared by solvent casting method. The total color differences of the CCF films were less than 30%, and satisfactory surface color, transparency, hydrophobicity, and thermal stability were also obtained. Besides, the UV-light/water/oxygen barrier capability and mechanical properties were enhanced with the incorporation of Cur@Fe-MoOx. Moreover, CCF films showed photothermal performance and thermal-controlled curcumin release ability, which endowed the CCF0.15 film with excellent antibacterial capability toward E. coli (≥99.95%) and S. aureus (≥99.96%) due to the synergistic antibacterial effect. Fe-MoOx exhibited high cell viability and less than 5% hemolysis even under the concentration of 500 μg mL–1. Based on those unique characteristics, the CCF0.15 film was chosen for tangerine preservation. The CCF0.15 film could prolong the shelf life of tangerine by at least 9 days compared with the unpacking group, and the tangerines could maintain the freshness characteristics over a 24 day storage period. Such thermal-mediated antibacterial film proposed by our work showed promising potential in food packaging.
研究领域:
食品科学
·
材料科学
·
生物技术
✓ 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）