CHEMICAL PHYSICS LETTERS
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2021
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IF 2.328
Qian Wu,Guo Feng,Lifeng Miao,Zijuan Tang,Weihui Jiang,Jian Liang,Jianmin Liu
Mesoporous petal-like MgAl 2 O 4 spinel has been prepared by molten salt assisted nonhydrolytic sol–gel method. The influence of Mg/Al molar ratio (0.45, 0.50, 0.55, 0.60, 0.70 and 0.80) on the morphology and surface area of MgAl 2 O 4 was investigated. The results reveal that Mg/Al molar ratio has a significant influence on the morphology. At Mg/Al molar ratio of 0.7, the achieved petal-like MgAl 2 O 4 is highly uniformed in morphology, the surface area and pore volume reached maximum values of 141 m 2 g −1 and 0.24 cm 3 g −1 , respectively. These properties make it have promising applications in the catalyst support field.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 9
·6770-6777
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IF 3.201
Kai Luo,Shi-Xi Zhao,Yi-Feng Wang,Shu-Jin Zhao,Xi-Hui Zhang
Petal-like δ-MnO2 microspheres were successfully synthesized by a very simple hydrothermal method with potassium permanganate (KMnO4) as the only raw material. By adjusting the initial concentration of KMnO4 solution and the time of the hydrothermal reaction, the morphology and crystallinity of δ-MnO2 can be controlled. The synthesized δ-MnO2 microspheres were characterized by XRD, SEM, TEM, TG/DSC, BET, ICP-AES and XPS. The catalytic ozonation performance of δ-MnO2 prepared by a hydrothermal reaction at 160 °C for 24 h using 0.1 mol L−1 KMnO4 solution was tested. Its catalytic activity is excellent. The degradation efficiencies of bisphenol A and ibuprofen using 0.1 g L−1 δ-MnO2 as the catalyst were 68.2% and 68.5% in 20 min reaction time. The results were much better than those of individual ozone treatment and with commercial MnO2 as the catalyst. The formation of hydroxyl radicals was not the main reason for the rapid degradation of organic compounds in the catalytic reaction with δ-MnO2 as the catalyst. The strong interaction among the catalyst surface, ozone and organic molecules was the important reason for catalysis based on the related experimental results.
研究领域:
环境科学
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材料化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2013
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IF 2.404
Xueyan Zou,Kun Li,Yanbin Yin,Yanbao Zhao,Yu Zhang,Binjie Li,Shasha Yao,Chunpeng Song
Petal-like ferric oxide/cysteine (FeOOH/Cys) architectures were prepared through a solvothermal route, which possessed high thiol group density. These thiol groups as binding sites can chelate Ni 2 + ions, which can be further used to enrich and separate his-tagged proteins directly from the mixture of lysed cells without sample pretreatment. These results show that the FeOOH/Cys architectures with immobilized Ni 2 + ions present negligible nonspecific protein adsorption and high protein adsorption capacity, with the saturation capacity being 88 mg/g, which are especially suitable for purification of his-tagged proteins.
研究领域:
生物化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
·
IF 4.1
Xingnian Duan,Jianmei Cen,Xiaoyu Qiu,Xixiang Liu
The development of high-performance and cost-effective electrocatalysts for oxygen evolution reactions (OER) is key to renewable energy conversion and storage technologies. In this paper, a hierarchical Co(OH) 2 -MoO 3 nanosheets with petal-like architecture was prepared by a simple one-step hydrothermal method using ZIF-67/NF as a precursor, and it was used as a direct electrocatalyst for OER. Notably, this petal-like Co(OH) 2 -MoO 3 /NF layered nanosheets not only prevent the agglomeration of nanostructured material , but also facilitate the complete penetration and diffusion of electrolyte. In addition, due to the strong electronic interaction between Co(OH) 2 and MoO 3 in the Co(OH) 2 -MoO 3 /NF system, Co(OH) 2 -MoO 3 /NF exhibits excellent electrocatalytic OER performance. It has a low overpotential of 273 mV at 10 mA cm −2 and excellent stability. This study provides a simple and effective strategy for the rational design and structural evolution of MOF-derived materials to achieve inexpensive and effective electrocatalysis.
研究领域:
材料科学
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能源化学
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电催化
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Yu-fang Fu,Jian Zhu,Xin Li,Guo-jun Weng,Jian-jun Li,Jun-wu Zhao
In this work, we synthesized Au-Ag alloy nano-garlands with multiple petal-like branches and internal cavities in two steps. First, we etched silver nanospheres with HAuCl 4 to obtain Au-Ag alloy nanoshells with different shell layer thicknesses and hollow core sizes. After that, based on different nanoshells, 4-NTP was used as a shape-directing agent, HAuCl 4 and AgNO 3 as precursor raw materials, and AA as a reducing agent for the growth of petals to form Au-Ag bimetallic nano-garlands with multi-branching structure. The regulation of the branching morphology of the nano-garlands could be achieved by changing the amounts of 4-NTP and HAuCl 4 . The SERS activity of the nano-garlands could be further improved by changing the AA concentration, the size of nanoshells, and the Au/Ag ratio of the precursor raw materials. Because the bimetallic nano-garlands have hollow cavities and petal-like branches, there are couplings between the cavities and the branches, between the adjacent branches, and between the metals inside and outside of the cores, which can achieve a good enhancement of SERS. The highest SERS enhancement factor of Au-Ag bimetallic nano-garlands can reach 4.47×10 8 , which can be used as a good candidate for SERS substrate for the trace detection of biomolecules , pesticides, and other substances.
研究领域:
材料科学
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纳米技术
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2024
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IF 2.6
Mou Yuhang,He Qing,He Ying,Meng Chenyao,Liu Hui,Li Liang
Supercapacitors as green energy storage devices are widely utilized in vehicle manufacturing, rail transportation, power systems, and other fields. In this study, petal-like NiO was synthesized via a one-step hydrothermal method, followed by the preparation of NiO@ZIF-67 composite electrode material at room temperature. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) tests demonstrated that the NiO in NiO@ZIF-67 possesses a porous petal-like structure, with ZIF-67 particles uniformly growing on NiO sheets. The effect of ZIF-67 content on the electrochemical performance of NiO was investigated, and results showed that NiO@ZIF-67/1, prepared with a mass ratio of NiO to Co(NO₃)₂·6 H₂O of 1:1, exhibits the optimal electrochemical performance. The specific capacitance of NiO@ZIF-67/1 electrode material reached 188.44 F·g⁻¹ at 1 A/g. Furthermore, the symmetric supercapacitor assembled with NiO@ZIF-67 exhibited a maximum energy density of 41.76 Wh/kg at 1.4 kW/h, with a capacitance retention rate of 87.2% after 5000 cycles. Graphical abstract
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 10
·7606-7615
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IF 2.22
Cai Haopeng,Wei Qinqin,Xiao Hongbo,Liu Hongwei,Wang Jun
The petal-like CoO/CNFs composites was synthesized in situ by a simple hydrothermal modus. Electromagnetic parameters of the CoO/CNFs composites are further adjusted by adjusting the weight fractional number of the CoO. A rich interface of CoO is introduced into the carbon nanofibers to form a flower-like composite. This unique flower-like layered structure and appropriate electromagnetic parameters effectively enhance the impedance matching and attenuation capabilities. When the mass ratio of CoO to CNFs is 2:1, the obtained flower-like CoO/CNFs composites achieves a maximum reflection loss of − 34.62 dB with a thickness of 3 mm at 7.8 GHz. At the same time, the effective absorption area is 2.89 GHz (7.035–9.925 GHz). Therefore, taking into consideration its excellent microwave absorption properties, the petal-like CoO/CNFs composites may be deemed as a high-efficiency absorbing agent that satisfies the impedance matching and attenuation characteristics.
研究领域:
材料科学
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电磁学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Kang Yang,Chao Duan,Zixuan Meng,Yuanmei Liu,Yueyin Liu,Zengyin Xie,Yonghao Ni
Water collection from atmospheric fog was deemed to be an efficient and sustainable strategy to defuse the freshwater scarcity crisis. Fog harvesting and trapping fibers, therefore, has aroused extensive interest due to their ease of preparation, weave, and use. However, the traditional fibers used in fog collector usually have a low fog collection capacity and efficiency because of their unreasonable morphology and structure design. Herein, we proposed a simple process to construct advanced fibers using a one-step wet spinning of hydrophobic polyvinylidene fluoride (PVDF) and hydrophilic cellulose mixture fiber for fog harvesting. The as-prepared fibers featured a petaloid structure and surface hydrophobic gradient, thus facilitating fog deposition, water droplet formation, and drainage. The unique longitudinal groove structure above enabled the hybrid fiber to achieve an excellent fog collection efficiency of 2750.26 mg/cm 2 /h per monofilament , which outstripped most of other fiber materials. When woven these fibers were in a longitudinal array network with an interval of 1 mm, and the fog collection efficiency can maintain at 10.30 L/m 2 /h. Therefore, this work provided a new strategy for further exploration of effective fog collection by cellulose-based fiber materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Technology
·
2022
·Vol. 10
·期 11
·2200809
·
IF 4.149
Guiquan Liu,Guorong Wang,Xin Guo,Xuqiang Hao,Kai Wang,Zhiliang Jin
The charge conductivity properties and ionic delivery of pseudocapacitive materials are important factors for the charge storage process. Herein, the new petal-like S-NiV-layered double hydroxide (LDH) materials are successfully synthesized by a presynthetic solvothermal reaction and a sulfidation modification procedure. The specific capacitance of the new petal-like S-NiV-LDHs electrode reaches 1403 F g −1 when the current density is 1 A g −1 , and this is attributed to Ni 3 S 2 formed on the surface of NiV-LDHs. When the current density is up to 20 A g −1 , the rate performance of the new petal-like S-NiV-LDHs electrode is 65.04%. It can be seen that the comprehensive electrochemical performance of the new petal-like S-NiV-LDHs is better than the petal-like NiV-LDHs before modification. When the power density of the S-NiV-LDHs//activated carbon asymmetric supercapacitor cell is 2278.48 W kg −1 , its energy density is 20 Wh kg −1 . The innovation of this work lies in that, based on the microstructure of petal-like NiV-LDHs with rich mesoporous structure, the surface of petal-like NiV-LDHs is slightly sulfurized, which makes the new petal-like S-NiV-LDHs electrode material have smaller electrochemical impedance, richer oxidation states, richer chemical active sites, better energy storage, and cycle stability.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
LAB ON A CHIP
·
2019
·Vol. 19
·期 14
·2383-2393
·
IF 6.914
Hui Hui Chai,Feng Chen,Shu Jie Zhang,Ya Dan Li,Zhi Song Lu,Yue Jun Kang,Ling Yu
The root system of plants is a major component of their bodies in terms of both function and bulk. The investigation of root system development is greatly assisted by microfluidic devices, which improve the spatial and temporal resolution of observations without destroying tissue. In the present study, a multi-chamber petaloid root-growth chip was developed for studying the development and physiology of root systems that have thin branching structures (i.e., fibrous root systems). The petaloid root-growth chip includes a central seed germination chamber and five root-growth chambers for observing the development of fibrous roots. The proposed device was applied for investigating the root system development of Oryza sativa. The phenotype and growth kinetics of O. sativa root systems grown in the proposed device were compared with those obtained during growth in a conventional conical flask with agar-based medium, and the results indicated that cultivation in the miniaturized device did not delay root system growth in the early stage (≤2 weeks). In addition, the transparent device enabled the non-destructive observation of the developmental and microstructural characteristics of the roots, such as the root caps, root border cells, and root hairs. Moreover, the ability to control the microenvironment in each of the five root-growth chambers individually facilitated the investigation of specific adaptations in the fibrous root growth of single O. sativa seedlings to different drought stresses. Accordingly, five polyethylene glycol (PEG)6000-induced drought stress conditions were established in the five root-growth chambers to investigate the root development of a single O. sativa seedling in the central germination chamber. In situ observations demonstrated that the different PEG6000-induced conditions affected the root growth responses and root microstructural adaptations of the single seedlings in each root-growth chamber. Therefore, the petaloid root-growth microfluidic chip can eliminate the effects of variations in different plant seeds to reveal the responses of plants to different environmental conditions more objectively while concurrently allowing for non-destructive observations at very high spatial and temporal resolution.
研究领域:
植物学
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农学
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分子生物学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Qian Wu,Guo Feng,Feng Jiang,Lifeng Miao,Weihui Jiang,Jian Liang,Jianmin Liu,Jingang Tan,Xiaojun Zhang,Xinbin Lao
Petal-like MgAl 2 O 4 spinel was successfully prepared using a novel inorganic salt-assisted nonhydrolytic sol-gel method without a template and was employed as absorbent in the removal of the Congo red (CR). The effects of the inorganic salt type, heat-treatment temperature, and dwelling time on the morphology and phase composition of the petal-like MgAl 2 O 4 spinel were investigated systematically. Results indicated that when Na 2 MoO 4 was employed as the salt and the heat-treatment temperature and dwelling time were 600 °C and 5 h, respectively, the as-obtained petal-like MgAl 2 O 4 spinel exhibited a highly uniform morphology with a thickness of 19–23 nm and a length of 240–280 nm. The N 2 adsorption-desorption results revealed that the petal-like MgAl 2 O 4 exhibited a large BET specific surface area of 161 m 2 g -1 with a pore volume of 0.24 cm 3 g -1 . The growth mechanism of the petal-like MgAl 2 O 4 is believed to be the formation of a two-dimensional layered network structure by the coordination between the condensation product of the magnesium aluminium bimetallic alkoxides and the ions in the salt. The as-prepared MgAl 2 O 4 petal exhibited an effective adsorption capacity toward anionic dyes CR. The maximum adsorption capacity of CR onto the mesoporous MgAl 2 O 4 petal was found to be 572.01 mg/g, it is showed the petal-like MgAl 2 O 4 exhibit huge potential of application in the field of environmental remediation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Cai Zhang,Zheng Deng,Xianglong Sun,Kangzhi Yuan,Jiadong Wang,Xirui Wu,Yifan Zhang,Kai Yang,Junjun Zhang,Guangbao Yang
The morphological features of materials significantly influence their interactions with cells, consequently affecting the cellular uptake of these materials. In this study, we examine the cellular uptake behavior of spherical metal–organic frameworks (MOFs) and petaloid MOFs, both possessing similar sizes and compositions. In comparison to spherical MOFs, dendritic cells (DCs) and macrophages exhibit superior phagocytic uptake of petaloid MOFs. Next, the results demonstrate that R848@petaloid MOFs more effectively promote the repolarization of tumor-associated macrophages (TAMs) from the M2 to M1 phenotype and the maturation of DCs. More importantly, the R848-loaded petaloid MOFs are found to significantly enhance the therapeutic effects of radiotherapy (RT) by eliciting antitumor responses. Furthermore, R848@petaloid MOFs combined with RT and αPD-L1 elicit a potent abscopal effect, effectively suppressing tumor metastasis. Therefore, this work proposes a new strategy to enhance the uptake of immunomodulators by immune cells through modulating the morphology of drug delivery carriers.
研究领域:
生物材料学
·
免疫学
·
肿瘤学
✓ 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）