CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xueming Bao,Leilei Wu,Yuanyuan Yu,Bo Xu,Li Cui,Man Zhou,Qiang Wang,Ping Wang
Nowadays, with the rapid growth of population and acceleration of global urbanization, the microbial contamination on textiles and continuous formaldehyde (HCHO) releases from indoor decoration have aroused public attentions along with the textile consumption. Herein, a green, novel method for preparation of a multifunctional cotton fabric was reported, via the combination use of mussel-inspired fabrication of amine-quinone networks (AQN) and in-situ deposition of manganese dioxide (MnO 2 ). Unlike the conventional methods under extreme conditions, in this method, the MnO 2 particles were efficiently deposited on the fiber surfaces at room temperature within 30 min in the presence of reductive AQN surface composed of polyethyleneimine (PEI) and dopamine, and the MnO 2 -deposited cotton fabric exhibits efficient photothermal antibacterial capability against both Staphylococcus aureus and Escherichia coli , with inactivation efficiencies over 97% after 20 min of irradiation. In addition, this multi-functional fabric shows prominent UV-shielding property (UPF > 100) and HCHO purification ability, making 106.04 μg of HCHO rapidly removed within 30 min by 2.5 g of modified cotton. Therefore, we believe that the functional fabric exhibits wide applications in the fields of home textiles for antibacterial and air purification under mild conditions, and the special AQN structure can be further expanded to fabrications of other multifunctional nano-composites.
研究领域:
材料科学
·
环境科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xue Gao,Hongmei Zhang,Lu Liu,Mu Jia,Xuepeng Li,Jianrong Li
A ratiometric fluorescence and colorimetry dual-mode nano-biosensor has been established for Staphylococcus aureus ( S. aureus ) determination. The prepared approaches of Manganese dioxide nanosheets (MnO 2 NSs) and carbon dots (BCDs) were facile, efficient and labor-saving and MnO 2 NSs-mediated fluorescence quenching and oxidation could amplify detection signals. The dual-mode determination had a broad linear range of 37 ∼ 3.7 × 10 6 CFU/mL and low detection limits of 9 CFU/mL (ratiometric fluorescence) and 22 CFU/mL (colorimetry). Meanwhile, the method was applied in real samples with recovery ranging of 90 ∼ 102% and RSD < 4.44%, which was an insignificant difference with standard plate counting. The new dual-mode approach of S. aureus possesses the advantages of superior sensitivity, precision, accuracy and specificity. Moreover, the dual-mode nano-biosensor can be adopted in other foodborne pathogens determination by changing corresponding aptamers and provide an enlightenment in monitoring food safety.
研究领域:
生物传感
·
食品安全检测
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xianhua Zhang,Yuan Liang,Fan Liu,Jie Liu,Bin Yu,Wenbo Li,Mengyu Yuan,Haozhe Tang,Yanchao Zhao,Dongxiao Ji,Kangkang Ou,Jianxin He,Xiaoyan Sun,Weili Shao
Among indoor air pollutants, particulate matter with a diameter less than 2.5 μm (PM 2.5 ) and volatile organic compounds with small molecules are the greatest threat to human health. However, complete removal of these pollutants is challenging, and the incomplete removal causes secondary pollution. In this study, manganese dioxide nanoparticles (MnO 2 NPs) were controllably grown on the surface of mullite nanofibers (MNFs) using a potassium permanganate (KMnO 4 ) reduction method to prepare MNF@MnO 2 composite membranes that could effectively remove PM 2.5 and formaldehyde from indoor air. After loading the optimal amount of MnO 2 NPs, the filtration efficiency of a nanofiber membrane for salt particles with diameters of 0.3 μm increased from 97.32 % to 99.47 %, and the removal rate of formaldehyde reached 88.3 % within 170 min in the closed laboratory space. After five repeated tests, the formaldehyde decomposition rate remained above 80 %. The MNF@MnO 2 membrane was successfully used to prepare an indoor air purifier filter element, demonstrating considerable potential for improving the indoor air quality and reducing health risks.
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jian Peng,Wenshan Gou,Tian Jiang,Kunpeng Ding,Anyang Yu,Qi Fan,Qingyu Xu
The integration of electronic devices has placed increasing demands on the low area occupancy, high areal capacity and safety of energy storage devices. Aqueous zinc ion batteries are expected to be used in highly integrated precision electronics due to their high safety, environmentally friendly and low cost advantages. However, the conventional coating method limits the structure and the areal capacity of electrodes. To address this issue, we design and fabricate a novel 3D printed reticular MnO 2 self-supporting cathode. Ascribed to the high mass loading and reticular structure of the reticular MnO 2 cathode, the AZIBs deliver a high areal capacity (3.43 mAh cm −2 at 2 mA cm −2 ). It is demonstrated that the reticular structure facilitates electrolyte storage and rapid diffusion of Zn 2+ and reduces charge transfer impedance. Furthermore, the 3D printing technology can realize layer-by-layer printing of electrodes. The areal capacity of the two-layer 3D reticular MnO 2 cathode is almost twice as high as that of 3D reticular MnO 2 . This work indicates the great potential of 3D printing technology in the design and fabrication of high-load electrodes with a high areal capacity and customized shapes.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 7
·3871-3882
·
IF 4.036
Mingming Zhao,Xiaoxi Song,Jiahui Lu,Siwen Liu,Xuan Sha,Qi Wang,Xu Cao,Kai Xu,Jingjing Li
Accurate drug delivery is a common topic, and it has always been an aim that scientists strive to achieve. To address this need, multifunctional and stimulus-sensitive nanoplatforms have attracted significant attention. Here we fabricated a glutathione (GSH) and adenosine-5′-triphosphate (ATP) dual-sensitive nanoplatform for controlled drug release and activatable MRI of tumors based on DNA aptamer and manganese dioxide (MnO2) nanosheets. Cleverly utilizing the DNA tunability, AS1411 aptamer which binds nucleolin, a protein specifically expressed on tumor-associated endothelial cells, was designed with ATP aptamer and its cDNA to load the anticancer drug, doxorubicin (Dox). The formed DNA-Dox complex was delivered to the tumor region with the help of MnO2 nanosheets and AS1411 aptamer. Then, the on-demand drug release in tumor cells was realized with the co-effect of the ATP aptamer and GSH reduction. It was found that without the structure of the MnO2 nanosheets being broken by GSH, Dox almost could not be released even in the presence of ATP. Similarly, without ATP, Dox was still maintained in the duplex even with GSH. Further combining the MRI ability and chemodynamic therapy of the produced Mn2+, an improved effect of the inhibition of tumor growth and imaging was achieved. Our designed DNA aptamer-based dual-responsive nanoplatform can realize the targeted drug delivery and MRI of breast tumor cells both in vitro and in vivo.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Li Qing,Chen Ao,Wang Donghong,Zhao Yuwei,Wang Xiaoqi,Jin Xu,Xiong Bo,Zhi Chunyi
Aqueous zinc metal batteries are a viable candidate for cost-effective energy storage. However, the cycle life of the cell is adversely affected by the morphological evolution of the metal electrode surface upon prolonged cycling. Here, we investigate different electrochemical protocols to favour the formation of stable zinc metal electrode surface morphologies. By coupling electrochemical and optical microscopy measurements, we demonstrate that an initial zinc deposition on the metal electrode allows homogeneous stripping and plating processes during prolonged cycling in symmetric Zn||Zn cell. Interestingly, when an initially plated zinc metal electrode is tested in combination with a manganese dioxide-based positive electrode and a two molar zinc sulfate aqueous electrolyte solution in coin cell configuration, a specific discharge capacity of about 90 mAh g −1 can be delivered after 2000 cycles at around 5.6 mA cm −2 and 25 °C.
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
CRYSTENGCOMM
·
2022
·Vol. 24
·期 37
·6546-6557
·
IF 3.756
Quan Zhou,Xingjian Dai,Kailin Li,Chenzhi Zhang,Xinfang Zhang,Zhilan Du,Shuang Yi,Pingan Yang,Jinsong Rao,Yuxin Zhang
Manganese dioxide@NiFe layered double hydroxide@montmorillonite (MNFM) with a nanoflower-like two-dimensional layered core–shell construction has been successfully synthesized by a two-step hydrothermal method. The structural and compositional influences on its electromagnetic wave (EW) absorption characteristics were discussed. MNFM with 8 mm thickness displayed excellent performance, which showed a minimum reflection loss (RLmin) of −21.8 dB at 15.4 GHz and an effective absorption bandwidth of 4.6 GHz. Meanwhile, RLmin was −13.5 dB at 13. 5 GHz when the thickness was 2.8 mm, and the effective absorption bandwidth was 3.31 GHz. The improved EW absorption performance may be attributed to the multilayer core–shell heterostructure leading to multipole relaxations and the ternary composite with excellent impedance matching. Hence, this work introduces a new idea for constructing core–shell clay-based nanocomposites, which are a promising material for EW absorption.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Xiang Chen,Haiyang Zhang,Xiaoye Liang,Lingling Li
Glutathione (GSH) is one of the important substances to maintain the redox balance in vivo, accurate monitoring of its changes is conducive to the early diagnosis and treatment of related diseases. Herein, we reported a two-in-one nanoflower-structured sensing platform (ZCGO@MnO 2 ) with luminescence resonance energy transfer (LRET) property and oxidase-like activity for dual-mode detection of GSH. The sensor consisted of persistent luminescence nanoparticles (PLNPs) with near-infrared emission and manganese dioxide (MnO 2 ) with luminescence quenching ability and oxidase-like activity. The addition of GSH could reduce MnO 2 to Mn 2+ , resulting in the recovery of persistent luminescence and inhibition of oxidase-like activity, then achieving persistent luminescence and colorimetric dual-mode signal outputs. The sensor utilized the persistent luminescence of PLNPs to eliminate the background interference of the complex biological matrix, improved the signal-to-noise ratio (S/N) of detection and took advantage of dual-mode sensing to improve the accuracy of detection, showing excellent analytical performance. Besides, the sensor was capable of monitoring changes in intracellular GSH levels through bioimaging . This work provides new ideas for the design of sensors in complex samples and broadens the application of PLNPs in the field of biosensing.
研究领域:
分析化学
·
生物医学工程
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 52
·31527-31534
·
IF 3.119
Shiyu Liu,Xiaoxiao Song,Jinping Li,Jiahong Zhou,Weidan Na,Dawei Deng
Multimode sensing has attracted extensive attention because they provide more than one transduction channel, thus improving accuracy and sensitivity. Due to the structural diversity, MnO2 nanosheets and nanoneedles were successively obtained via one-step redox reaction and different self-assembly methods. MnO2 nanosheets possess outstanding optical properties including extremely strong resonance Rayleigh scattering (RRS) and absorbance signal, and were selected as a dual-mode sensing material. Inspired by the selectivity of alkaline phosphatase (ALP) towards dephosphorylate ascorbic acid 2-phosphate (AAP) to generate ascorbic acid (AA), which has the ability to decompose MnO2 nanosheets along with optical signals and colour change, a dual-mode optical ALP sensing platform has been designed. Therefore, MnO2 nanosheets can serve as colorimetric probes by directly visualizing the colour variation with bare eyes. Moreover, the detection limit obtained by the RRS sensing mode can be as low as 0.17 mU L−1, which is far superior to that obtained by previously reported methods. The strategy not only has good feasibility and sensitivity, but also shows good prospects for a series of ALP-extended sensing applications.
研究领域:
生物化学
·
医学检测
·
纳米材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 105
·期 5
·3339-3352
·
IF 3.784
Junjie Qian,Bin Du,Chao He,Mei Cai,Xinrong Zhong,Sizhu Ren,Jiayi Lou,Anze Shui
The development of electromagnetic wave (EMW) absorption materials with lightweight, wide absorption bandwidth, thin thickness, and strong EMW absorption performance has become a hotspot. Herein, the morphology-controlled preparation of α-manganese dioxide (α-MnO 2 ) was successfully obtained via a facile hydrothermal method, and the EMW absorption performance of α-MnO 2 was investigated in detail. The results indicated the as-obtained Mn-1.0-120 possessed the best EMW absorption performance with minimum reflection loss of −53.43 dB at about 5.2 GHz with a thickness of 4.1 mm originated from the synergistic effects of multiply scattering, dielectric loss, and magnetic loss. This contribution demonstrates that the MnO 2 has promising candidates with a tunable EMW absorption performance for applications in the electromagnetic field in the future.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
ANALYST
·
2020
·Vol. 145
·期 9
·3283-3288
·
IF 3.978
Juan Li,Huifang Shen,Suhua Yu,Geshan Zhang,Chuanli Ren,Xiaoya Hu,Zhanjun Yang
In this research, a novel manganese dioxide nanorod-anchored graphene oxide (MnO2 NRs/GO) composite was synthesized by a simple hydrothermal method for electrochemical sensing application. A highly sensitive electrochemical sensor for dopamine (DA) was constructed by modifying glassy carbon electrode (GCE) with MnO2 NRs/GO. The morphology and performance of the composite material and modified GCEs were investigated by using scanning electron microscopy (SEM), X-ray diffraction (XRD) and cyclic voltammetry (CV), respectively. The resultant MnO2 NRs/GO composite has a large electroactive area and shows excellent electrochemical activity toward DA. Under the optimal conditions, the DA sensor shows a linear response in the DA concentration ranges of 0.1 μM–0.08 mM and 0.08–0.41 mM with a low detection limit of 0.027 μM and a high sensitivity of 602.4 μA·mM−1·cm−2. The MnO2 NRs/GO composite provides a promising platform for the construction of a highly sensitive and selective sensor of DA.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Haiyu Wang,Linghui Peng,Guiying Li,Hongli Liu,Zhishu Liang,Huijun Zhao,Taicheng An
Catalytic ozonation is a promising bioaerosol control technology, as O 3 is prevalent in atmosphere. However, O 3 at atmosphere concentration has limited oxidation potential and reactive oxygen species (ROSs) production, leading incomplete bioaerosol inactivation. Therefore, a catalytic ozonation system with a manganese dioxide/Ni foam (MN) was prepared for efficient bioaerosol inactivation. The MN exhibited superior activity in catalytic ozonation bioaerosol inactivation, achieving 91.6% inactivation efficiency within 8.07 s at atmospheric concentration (0.1 ppm) of O 3 . The inactivation efficiency can be further improved to 99.0% by regulating surface oxygen vacancies (O V ) in MN, which is mainly attributed to abundant O V of MN that facilitate rapid conversion of O 3 to other ROSs. Meanwhile, the mechanism of rapid bacterial inactivation was also clarified at cellular level, showing that ROSs caused bacterial oxidative stress. This catalytic ozonation strategy would offer more choices to design efficient O 3 catalysts for bioaerosol control and public health protection.
研究领域:
环境科学
·
公共卫生
✓ 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）