CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiawei Li,Zejing Chu,Shimeng Wang,Haipeng Liu,Biao Dong
Photodynamic antibacterial based on metal organic framework (MOF) structure shows broad application prospects. But it is limited by the problem of hypoxia in the bacterial microenvironment. The oxygen-producing nanozyme strategy is the key to solving the problem. In this work, MnO 2 oxygen-producing nanozyme was introduced on the basis of the metal organic framework Cu-TCPP to obtain Cu-TCPP@MnO 2 , which can produce oxygen synchronously during PDT. Moreover, under the excitation of 660 + 808 nm dual laser irradiation, the synergistic treatment of PDT, CDT and PTT was achieved. In the in vitro antibacterial experiment, the inhibition rate of Cu-TCPP@MnO 2 against Staphylococcus aureus under dual laser excitation can reach 99.9 %, and the biofilm removal rate is close to 80 %. The inhibition rate of Escherichia coli is also as high as 99.5 %. In the in vivo treatment of mouse models, the wound area was only 2.39 % after 13 days, achieving efficient sterilization, controlling inflammation and promoting tissue repair. This synergistic antibacterial strategy has shown remarkable effects in wound healing giving the material great potential for medical applications.
研究领域:
生物医学工程
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纳米医学
·
感染与免疫
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yi Wang,Jie Wang,Dong Wei,Lan Xu
In this study, a multicore-shell ternary composite electrode material (MnO 2 @Ppy@NPCNFs) with excellent electrochemical performances was prepared by using surface modification, in which core–shell Ppy@N-doped porous carbon nanofibers (Ppy@NPCNFs) with large specific surface area and high conductivity were used as the substrate (a multicore layer), and MnO 2 was loaded on the substrate by hydrothermal synthesis to form a shell layer, further improving the SC of electrode material. The parameters of hydrothermal growth of MnO 2 on Ppy@NPCNFs were explored by means of the control variable method and response surface methodology, and the optimal parameters were predicted and verified. Electrochemical test results showed that the SC of MnO 2 @Ppy@NPCNFs prepared under the optimal reaction parameters was as high as 595.77 F g −1 , and its capacitance retention was 96.2 % after 1000 cycles. Moreover, a symmetric supercapacitor prepared with the optimal multicore-shell electrode showed an energy density of 9.36 Wh kg −1 at a power density of 1000 W kg −1 and a retention rate of 92.46 % after 1000 cycles, indicating the promising application of multicore-shell ternary composite electrode material in high-performance supercapacitors.
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
Catalysts
·
2023
·Vol. 13
·期 3
·588
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IF 3.9
Haiou Zhang,Yixin Zhang,Huikang Song,Yan Cui,Yingying Xue,Cai-e Wu,Chao Pan,Jingxin Xu,Jian Qiu,Leilei Xu,Mindong Chen
As a toxic pollutant, carbon monoxide (CO) usually causes harmful effects on human health. Therefore, the thermally catalytic oxidation of CO has received extensive attention in recent years. The CuO-based catalysts have been widely investigated due to their availability. In this study, a series of transition metal oxides (Fe2O3, Co3O4and NiO) promoted CuO-based catalysts supported on the α-MnO2nanowire catalysts were prepared by the deposition precipitation method for catalytic CO oxidation reactions. The effects of the loaded transition metal type, the loading amount, and the calcination temperature on the catalytic performances were systematically investigated. Further catalyst characterization showed that the CuO/α-MnO2catalyst modified with 3 wt% Co3O4and calcined at 400 °C performed the highest CO catalytic activity (T90= 75 °C) among the investigated catalysts. It was supposed that the loading of the Co3O4dopant not only increased the content of oxygen vacancies in the catalyst but also increased the specific surface area and pore volume of the CuO/α-MnO2nanowire catalyst, which would further enhance the catalytic activity. The CuO/α-MnO2catalyst modified with 3 wt% NiO and calcined at 400 °C exhibited the highest surface adsorbed oxygen content and the best normalized reaction rate, but the specific surface area limited its activity. Therefore, the appropriate loading of the Co3O4modifier could greatly enhance the activity of CuO/α-MnO2. This research could provide a reference method for constructing efficient low-temperature CO oxidation catalysts.Keywords:transition metal oxides;CuO-based catalysts;Co3O4modification;α-MnO2nanowire;catalytic oxidation of CO
研究领域:
催化
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Mingyue Ma,Zhenxiong Ye,Jie Zhang,Youbin Wang,Shunyan Ning,Xiangbiao Yin,Toyohisa Fujita,Yanliang Chen,Hanyu Wu,Xinpeng Wang
To address the imperative need for efficient removal of uranium-containing wastewater and mitigate radioactive contamination risks associated with nuclear energy, the development of materials with high removal efficiency and facile separation is crucial. This study designed and synthesised MnO 2 @chitosan (CTS) composite aerogel beads by in-situ growing δ-MnO 2 on porous CTS aerogel beads. This approach not only mitigates the agglomeration of MnO 2 nanospheres but also significantly enhances the porous structure and surface area of MnO 2 @CTS. These cost-effective and eco-friendly millimeter-scale spherical aerogels exhibited convenient separation properties after adsorption. These characteristics help mitigate the risk of equipment seam blockage and secondary pollution that are often associated with powdered adsorbents. Additionally, MnO 2 @CTS exhibited remarkable mechanical strength (stress approximately 0.55 MPa at 60 % strain), enabling rapid separation and easy regeneration while maintaining high adsorption performance even after five cycles. Significantly, MnO 2 @CTS exhibited a maximum adsorption capacity of 410.7 mg/g at pH 6 and 298 K, surpassing reported values for most CTS/MnO 2 -based adsorbents. The chemisorption process of U(VI) on MnO 2 @CTS followed the pseudo-second-order kinetic and Dubinin-Radushkevish models. X-ray photoelectron spectroscopy analysis further confirmed the reduction of U(VI) to U(V/IV). These findings highlight the substantial potential of MnO 2 @CTS aerogel beads for U(VI) removal from aqueous solutions, positioning them as a promising solution for addressing U(VI) contamination in wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Du Huang,Zhenya Lu,Xingyue Liu,Junning Gao,Zhiwu Chen,Xin Wang,Xiaoyi Fu
NiCo 2 O 4 nanoflowers with high specific surface area were prepared on nickel foam (NF) by hydrothermal method and used as frameworks for developing cathode and anode of flexible asymmetric supercapacitor. With the unique nanoflower-like NiCo 2 O 4 arrays as skeleton, the NiCo 2 O 4 /Au/MnO 2 cathode was prepared by gold-spraying and electrochemical deposition and the NiCo 2 S 4 /PPy anode was prepared by second-hydrothermal and electro-polymerization. The hierarchical structured electrodes offer sufficient redox sites and adequate channels for accelerating ion and electron transport between electrodes and electrolyte. Moreover, the NiCo 2 S 4 /PPy was first reported as the anode, and its cycling stability (capacitance retention of 86.04 % after 5000 cycles) and specific capacitance (1612.5F/g at 1 A/g). The assembled flexible all-solid-state asymmetric supercapacitor (NiCo 2 O 4 /Au/MnO 2 // NiCo 2 S 4 /PPy) displays a high energy density of 206.37 Wh kg −1 at a power density of 398.57 W kg −1 and an outstanding cyclability (capacitance retention of 83.41 % after 5000 cycles).
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Bo Chen,Linrui Cai,Rangrang Fan,Min Mu,Di Chuan,Yangmei Ren,Haifeng Chen,Gang Guo
Photodynamic therapy (PDT) as emerging phototherapy has attracted extensive attention in cancer therapy. However, the overexpressed glutathione (GSH) and hypoxic conditions of the tumor microenvironment (TME) sevely limit the therapeutic efficiency of PDT. Herein, we design a multifunctional nanoplatform (CBDM) for cancer therapy consisting of photosensitizer (Ce6), bovine serum albumin (BSA), and polydopamine-manganese dioxide (MnO 2 ) nanocomplex, which is simultaneously modified by nucleolin-targeting AS1411 aptamer. This MnO 2 -based nanoplatform ameliorates tumor hypoxia and promotes oxygen production via the reaction between MnO 2 and endogenous H 2 O 2 and acid H + in the TME. Besides, this biocompatibility nanoplatform exhibits an augmented PDT effect and high photothermal conversion efficiency under 808 nm laser irradiation. Importantly, the MnO 2 -based nanoplatform achieves a significant in vivo synergistic therapeutic effect and fights against liver metastasis of breast cancer. As a result, the excellent biocompatibility, especially the superior anticancer efficacy, and suppression of tumor metastasis make the MnO 2 -based nanoplatform a promising candidate for cancer therapy.
研究领域:
癌症治疗
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纳米医学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xingyu Fan,Qingshan Han,Runtian Miao,Lingke Liu,Yueqin Li
Flexible zinc-ion batteries (ZIBs) based on hydrogel electrolytes are promising candidates for wearable electronics. However, the inferior intrinsic conductivity of the cathode materials and the poor interfacial adhesion between hydrogel electrolytes and solid electrodes still limit ZIBs’ real application. Herein, a stretchable and adhesive xanthan gum/poly(acrylamide-co-[2-(methacryloyloxy) ethyl] dimethyl-(3-sulfo-propyl) ammonium hydroxide)/(ZnSO4 + MnSO4) (XG/P(AM-co-SBMA)) zwitterionic hydrogel electrolyte was prepared by a one-step method. The as-prepared XG/P(AM-co-SBMA) hydrogel electrolyte exhibited favorable mechanical properties (tensile strain of 1560% and strength of 52.06 kPa), high ionic conductivity (46.53 mS cm−1) and strong adhesion with various substrates (maximum adhesive strength of 20.36 kPa). Then, a series of MnO2/polyaniline (MnO2/PANI) cathode materials were prepared to explore the coating effect of PANI on the electrochemical performance of the assembled Zn//XG/P(AM-co-SBMA)//MnO2/PANI flexible ZIBs. Due to the high ionic conductivity of the XG/P(AM-co-SBMA) hydrogel electrolyte and the tight interfacial contact at the electrode/electrolyte interface, the ZIBs could deliver a high specific capacity of 239.5 mA h g−1 at 0.25 A g−1. Furthermore, it can reliably operate for over 500 cycles at 2.0 A g−1 with a capacity retention rate of 84.5% and nearly 100% coulomb efficiency. Moreover, such flexible devices can withstand various deformations such as bending, compressing, and folding without compromising the electrochemical performance.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yaru Wang,Jiaqin He,Xunxun Li,Mengmeng Wang,Yuanbo Zhou,Jun Xiao,Dongyun Chen,Jianmei Lu
MnO2 nanotubes loaded with Pt and Ni–Fe spinel were synthesized using simple hydrothermal and sol–gel techniques. After loading with Ni–Fe spinel, the specific surface area of the material increases 3-fold. This change helped to provide more active sites and facilitated the association between the catalyst and volatile organic compounds (VOCs). X-ray photoelectron spectroscopy determined that the adsorbed oxygen concentrations were all greatly increased after Pt loading, indicating that Pt promoted the adsorption of oxygen and so accelerated the combustion process. The performance of the catalyst after loading with 2 wt % Pt was greatly improved, such that the T90 for benzene decomposition was decreased to 113 °C. In addition, the 2% Pt/2Mn@NFO exhibited excellent low-temperature catalytic activity when reacting with low concentrations of toluene and ethyl acetate. This work therefore demonstrates a viable new approach to the development of Mn-based catalysts for the low temperature catalytic remediation of VOCs.
研究领域:
环境科学
·
催化材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Advanced Ceramics
·
2022
·Vol. 11
·期 11
·1735-1750
·
IF 11.534
Yang Weiyi,Wang Jian,Gao Shuang,Zhang Haoyu,Wang Hongyang,Li Qi
It is important to develop green and sustainable approaches to enhance electrochemical charge storage efficiencies. Herein, a two-step in-situ growth process was developed to fabricate carbon fiber paper-supported CeO 2 /MnO 2 composite (CeO 2 /MnO 2 —CFP) as a binder-free photo-electrode for the photo-assisted electrochemical charge storage. The formation of CeO 2 /MnO 2 type II heterojunction largely enhanced the separation efficiency of photo-generated charge carriers, resulting in a substantially enhanced photo-assisted charging capability of ∼20%. Furthermore, it retained a large part of its photo-enhanced capacitance (∼56%) in dark even after the illumination was off for 12 h, which could be attributed to its slow release of stored photo-generated electrons from its specific band structure to avoid their reaction with O 2 in dark. This study proposed the design principles for supercapacitors with both the photo-assisted charging capability and its long-lasting retainment in dark, which may be readily applied to other pseudocapacitive materials to better utilize solar energy.
研究领域:
材料科学
·
能源科学
·
光电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Dong Wang,Yumeng Wang,Xuefen Wang
In this work, a thorn ball-like three-dimensional (3D) heterostructured ZIF-67@α-MnO 2 catalyst consisting of ZIF-67 nanocages impaled by α-MnO 2 nanorods were robustly embedded in polyacrylonitrile nanofibers by electrospinning technique for highly efficient removal of low-molecular-weight pollutants (LMWPs, like dyes and antibiotics) from wastewater. Benefiting from abundant active sites and enhanced charge transfer abilities provided by ZIF-67@α-MnO 2 nanoparticles, the optimal ZIF-67@α-MnO 2 nanofibrous membranes (NFMs) showed a significant response towards acid fuchsin (AF) in terms of comparable adsorption capacity (2495 mg/g) and impressive catalytic activity (degradation degree of 99 % AF within 20 min). In addition, the resultant membranes possessed satisfactory versatile catalytic activity toward tetracycline (95.3 %), norfloxacin (98.4 %) and doxycycline hyclate (89.2 %). Besides, the resultant membranes had high permeability of 1302 L·m − 2 ·h − 1 driven by gravity and could efficiently treat 370.5 L·m − 2 AF (20 ppm), which was significantly higher than that of pure ZIF-67 NFMs (141.8 L·m − 2 ). The successful fabricating of such membrane with extraordinary adsorption and catalytic performance provided a promising approach for high-performance catalytic membranes.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yanli He,Shuguang Shen,Ying Wang,Chenyuan Guo,Yaping Yuan,Yaru Fan,Lili Zhang,Yuyan Song
A simple and low-cost method for the synthesis of α -MnO 2 /C catalyst was proposed, in which KMnO 4 was reduced in-situ by cellulose in urea solution. The heterogeneous catalytic degradation of urea wastewater were carried out over α -MnO 2 /C. The effect of KMnO 4 -urea solution concentration on the structure and performance of the catalysts was investigated. The results indicate that δ -MnO 2 tends to curl and collapse into tunnel structure of α -MnO 2 as the concentration of KMnO 4 -urea solution increases, leading to α -MnO 2 is evenly distributed on carbon carrier. When the concentration of KMnO 4 -urea solution is appropriate, the catalyst has not only a large specific surface area but also high oxygen vacancy density, which is the key to be able to completely degrade the urea process wastewater. The reaction kinetics show that the catalytic hydrolysis of urea behaves as a pseudo-first-order reaction. A possible catalytic mechanism of urea hydrolysis over α -MnO 2 /C was proposed. In addition, the reusability experiments show that the α -MnO 2 /C catalyst has a good recycling ability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Ke Zhang,Yafeng Bai,Liying Wang,Yang Gao,Xuesong Li,Xijia Yang,Wei Lü
Zinc-ion hybrid capacitors (ZIHCs) are expected to become the next generation of energy storage devices, highly anticipated for their battery-like performance and lower cost. However, because of their unmanageable structural deformation and inadequate cycling capabilities, they face significant difficulties and challenges in practical production and applications. In this paper, we developed and assembled a flexible solid-state zinc ion hybrid capacitor, which utilizes a gel electrolyte, activated carbon (AC) as the anode, and porous Fe3+ doped MnO2 (Fe-MnO2) as the cathode. The embedding of Fe3+ in MnO2 broadens the original ion channels and provides more electrochemically active sites. The gel electrolyte is formed with poly(vinyl alcohol) (PVA) providing a flexible framework, carboxymethylcellulose (CMC) offering rigid support, and enhanced low-temperature performance due to the addition of ethylene glycol (EG). This combination results in excellent mechanical properties and high ionic conductivity, ensuring stability even under low-temperature conditions. As a result, the flexible ZIHC showcases exceptional specific capacitance, achieving a capacitance of 848.8 mF cm–2 at a current density of 2 mA cm–2, and strong stability when subjected to bending tests. Notably, even under low-temperature conditions of −20 °C, the device maintains consistent electrochemical performance, with a remarkable cycle retention rate of 93.75% after 15 000 cycles. This study demonstrates significant advancements in energy storage systems, creating opportunities for the use of flexible devices across a range of applications.
研究领域:
材料科学
·
能源存储技术
✓ 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）