NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 22
·10019-10025
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IF 2.7
Yaoge Huang,Wuga Shama
This study prepared epoxy resin reinforced porous beads (CERBs) by crosslinking a water-soluble epoxy monomer, 1,4-butanediol diglycidyl ether (BDE), with chitosan (CS) using isophorone diamine (IPD) as a crosslinking agent. CERBs are prepared by a one-step method under atmospheric pressure and used for the adsorption of Congo Red (CR). The Sips isotherm model indicates that the maximum adsorption capacity of CERBs for Congo Red is 2289.2 mg g−1. CERBs have a three-dimensional network structure and strong mechanical properties, and can be reused more than 5 times maintaining a high adsorption capacity. Therefore, this material can be produced on a large scale and has great potential for commercial applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Bioactive Materials
·
2025
·
IF 20.3
Jiannan Mao,Yichang Xu,Wenbo Wang,Xiongwei Deng,Yujian Hui,Min Rui,Jincheng Tang,Wei Wang,Yiyang Huang,Liang Wu,Kun Xi,Yunrong Zhu,Yong Gu,Liang Chen
Microspheres (MPs) and porous microspheres (PMPs) are the two most widely used microparticles in tissue engineering and stem cell therapy. However, how stem cells perceive the topological differences between them to regulate cell function remains to be unclear. Here, we systematically studied the changes in stem cell function under the action of MPs and PMPs and elucidated the related mechanisms. Our findings show that the porous structure of PMPs can be sensed by focal adhesions (FAs), which triggers the synthesis of F-actin to inhibit the phosphorylation and degradation of Yes-associated protein (YAP), while also transmitting stress to the nucleus through the contraction of F-actin, thereby enhancing the nuclear translocation of YAP protein. The activation of YAP significantly enhances the proliferation, osteogenesis, paracrine and glucose metabolism of BMSCs, making them exhibit stronger bone repair ability in both in vivo and in vitro experiments. In summary, this study provides a comprehensive and reliable understanding of the behavior of BMSCs in response to MPs and PMPs. It also deepens our understanding of the association between microparticles’ topological cues and biological functions, which will provide valuable guidance for the construction of bone tissue engineering (BTE) scaffolds.
研究领域:
组织工程学
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细胞生物学
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生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 43
·7020-7029
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IF 3.304
Xuehui Huang,Hongyun Pan,Kui Chen,Zhilin Yin,Jing Hong
A molten salt method has been used to prepare porous La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) (LSMC-X) microspheres and La0.8Sr0.2MnO3 (LSM) nanocubes using spherical and cubic MnCO3 as templates, respectively. XRD patterns showed a single perovskite phase when the Cu content was less than x = 0.3. SEM and TEM images indicated that the porous microspheres comprised many aggregated nanoparticles, while the nanocubes were solid with a smooth surface. LSM and LSMC-0 samples both possessed high surface areas (63.5045 and 49.6504 m2 g−1, respectively). Furthermore, the CO conversions showed that LSMC-0.2 had the best catalytic activity (T50 = 83.63 °C, T90 = 97.40 °C) and good stability. XPS analysis confirmed that Cu2+ doping induced Mn4+ formation and slight changes in the oxygen species, leading to different catalytic activity. Owing to their facile synthesis and high catalytic performance, we propose that these porous spherical La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) and nanocubic La0.8Sr0.2MnO3 catalysts are promising candidates for CO oxidation.
研究领域:
材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2017
·
IF 9.466
Kai Tao,Bin Xue,Samuel Frere,Inna Slutsky,Yi Cao,Wei Wang,Ehud Gazit
Artificial photosynthesis shows a promising potential for sustainable supply of nutritional ingredients. While most studies focus on the assembly of the light-sensitive chromophores to 1-D architectures in an artificial photosynthesis system, other supramolecular morphologies, especially bioinspired ones, which may have more efficient light-harvesting properties, have been far less studied. Here, MCpP-FF, a bioinspired building block fabricated by conjugating porphyrin and diphenylalanine, was designed to self-assemble into nanofibers-based multiporous microspheres. The highly organized aromatic moieties result in extensive excitation red-shifts and notable electron transfer, thus leading to a remarkable attenuated fluorescence decay and broad-spectrum light sensitivity of the microspheres. Moreover, the enhanced photoelectron production and transfer capability of the microspheres are demonstrated, making them ideal candidates for sunlight-sensitive antennas in artificial photosynthesis. These properties induce a high turnover frequency of NADH, which can be used to produce bioproducts in biocatalytic reactions. In addition, the direct electron transfer makes external mediators unnecessary, and the insolubility of the microspheres in water allows their easy retrieval for sustainable applications. Our findings demonstrate an alternative to design new platforms for artificial photosynthesis, as well as a new type of bioinspired, supramolecular multiporous materials.
研究领域:
生物化学
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材料科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zongrui Zhang,Weiwei Xu,Chi Zhang,Jianjun Sun,Guona Bai,Mingjie Wang,Mengyun Yu,Mengqun Li,Xinyu Wang
The development of cost-effective wastewater treatment technologies is imperative for heavy metal pollution mitigation, which presents considerable risks to water supplies, ecosystems, and human health. In this context, polyacrylonitrile/polyethylenimine porous microspheres (PAN/PEI PM) were synthesized through a dual-phase strategy combining polymer crystallization and vapor-induced phase separation, leading to effective removal of hexavalent chromium (Cr(VI)) from wastewater. The PAN/PEI PM, characterized by a substantial number of amino groups and a relatively uniform particle size ranging from 1.3 to 1.7 μm, demonstrated commendable thermal stability, a high specific surface area (93.5 m2/g), and a pore volume of 0.7 cm3/g. Furthermore, the PAN/PEI PM exhibited a significantly enhanced Cr(VI) adsorption efficiency, achieving levels of up to 194.5 mg/g. Even after five cycles, they consistently maintained a removal efficiency exceeding 64%, with an adsorption capacity still reaching 125.6 mg/g. The adsorption isotherm and kinetics were found to correlate well with the Langmuir and pseudo-second-order models, respectively. Adsorption experiments demonstrated that the porous microspheres effectively remove Cr(VI) primarily through complexation and electrostatic interactions, which is attributed to the elevated concentration of ionizable functional amino groups (NH2) within the microsphere structure. Additionally, the redox processes are predominantly reliant on the reduction of adsorbed Cr(VI) to Cr(III). These findings underscore the favorable adsorption characteristics and reusability of PAN/PEI PM, offering valuable insights for the development of more effective and sustainable strategies for Cr(VI) removal from 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
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2018
·Vol. 25
·期 2
·101-109
·
IF 0
Yuan Caideng,Zhang Lei,Li Haichao,Guo Ruiwei,Zhao Meng,Yang Lan
In this study, we prepared and applied polymeric porous microsphere adsorbents with selectivity for Li + extraction from aqueous solution. We synthesized the adsorbents by suspension polymerization using methacryloyoxyme-12-crown-4 (M12C4) as a functional monomer, which had been synthesized from 2-hyroxymethyl-12-crown-4 and methacryloyl chloride. We verified the chemical composition by solid nuclear magnetic resonance ( 13 C-NMR) spectroscopy and observed the porous structure by scanning electron microscopy (SEM). We conducted adsorption isothermal and kinetic tests to determine the adsorption properties. It was found that the adsorbents showed high adsorption efficiency and an adsorption equilibrium time of 200 min. In addition, since the crown ether used in this work could form a stable complex with Li + , we observed good selectivity for Li + in the prepared solution compared with other ions such as Na + , K + , Mg 2+ , and Ca 2+ . We reused the adsorbents five times with no significant decrease in adsorptive capacity.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
JOURNAL OF MATERIALS CHEMISTRY
·
2011
·Vol. 21
·期 27
·10189-10194
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IF 5.101
Hua Wang,Yongmin Wu,Yusong Bai,Wei Zhou,Yiran An,Jinghong Li,Lin Guo
The self-assembly of tin dioxide (SnO2) porous microspheres was conducted via a surfactant-free one step hydrothermal reaction. The crystalline structure and morphologies of the as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the porous microspheres consist of single crystalline SnO2 octahedral nanoparticles approximately 40 nm in width and 60 nm in length, with exposed high index {221} facets. The as-prepared porous nanostructure was used as an anode material for a lithium ion battery, whose cyclic voltammetry, electrochemical impedance, charge–discharge galvanstatic behavior and cycle performance were examined. A highly stable capacity about 690 mA g−1 after 50 cycles at a current density of 500 mA g−1 was achieved, which is much higher than that of non-assembled SnO2 octahedral nanoparticles and irregular SnO2 nanoparticles. The superior electrochemical properties result from the preferable nanostructure, with the pores favorable to the diffusion of electrolyte and providing buffer space for the volume change during alloying and dealloying reactions. Meanwhile, the special crystalline facets of the octahedral nanoparticles can facilitate Li+ ion insertion and extraction.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2014
·Vol. 31
·期 12
·2192-2197
·
IF 1.241
Anjum Muhammad Naveed,Zia Khalid Mahmood,Zhu Lihua,Haroon-ur-Rashid,Ahmad Mirza Nadeem,Zuber Mohammad,Tang Heqing
Self-assembled hollow microspheres poly( o -chloroaniline) (POC) have been synthesized by simple oxidative polymerization of o -chloroaniline using camphor-sulfonic acid (CSA) as dopant acid and ammonium persulfate (APS) as oxidant. The POC microspheres were characterized by means of FTIR, XRD and SEM analysis. Adsorption characteristics of POC spheres were studied by using methyl orange (MO) as adsorbate. It was found that adsorption of MO by POC was better described by pseudo-second-order kinetics than any other kinetic model, such as the pseudo-first-order and intra-particle diffusion models. Langmuir adsorption isotherm model was the best to fit experimental data. The results showed that hollow microspheres of POC can be used as novel and low-cost adsorbent for removal of organic dye from waste water.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xiangzhen Zhu,Qingfeng Fu,Lingfei Tang,Chunfu Lin,Jian Xu,Guisheng Liang,Renjie Li,Lijie Luo,Yongjun Chen
M–Nb–O compounds are advanced anode materials for lithium-ion batteries (LIBs) due to their high specific capacities, safe operating potentials, and high cycling stability. Nevertheless, the found M–Nb–O anode materials are very limited. Here, Mg2Nb34O87 is developed as a new M–Nb–O material. Mg2Nb34O87 porous microspheres (Mg2Nb34O87-P) with primary-particle sizes of 30–100 nm are fabricated based on a solvothermal method. Mg2Nb34O87 has an open 3 × 4 × ∞ Wadsley–Roth shear structure and a large unit-cell volume, leading to its largest Li+ diffusion coefficients among all the developed M–Nb–O anode materials. In situ X-ray diffraction analyses reveal its high structural stability and intercalating characteristic. These architectural, conductivity, and structural advantages in Mg2Nb34O87-P lead to its most significant intercalation pseudocapacitive contribution (87.7% at 1.1 mV s–1) among the existing M–Nb–O anode materials and prominent rate capability (high reversible capacities of 338 mAh g–1 at 0.1C and 230 mAh g–1 at 10C). Additionally, this new material exhibits a safe operating potential (∼1.68 V), an ultrahigh initial Coulombic efficiency (94.8%), and an outstanding cycling stability (only 6.9% capacity loss at 10C over 500 cycles). All of these evidences indicate that Mg2Nb34O87-P is an ideal anode material for high-energy, safe, fast-charging, and stable LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jingjing Xie,Wei Jiang,Fei Tang,Ying Gao,Hongyu Li,Jiyang Li,Deyang Zhao,Zhiqiang Lv,Zhenglong Yang,Yanbin Xu
La 2 O 3 doped hollow porous Ni/NiCo 2 O 4 /C microspheres (NCO-La) are prepared by solvothermal method. The doping of porous La 2 O 3 nanoparticles is crucial to reduce the crystalline grain size of NiCo 2 O 4 and the internal resistance of the electrode, which facilitates ionic and electronic transportation efficiency. Hollow porous NCO-La microspheres with carbon networks have good mechanical strength and can effectively suppress volume expansion and aggregation. The combination of high-conductivity carbon and metallic nickel improves electronic conductivity. The nanostructure in the composite microspheres brings abundant active sites, which facilitates rapid redox of metal ions and allows rapid insertion and removal of Li + , consequently effectively improving the specific capacity. Benefiting from the synergy of well-designed nanostructure, the material shows high Li + storage performance and good stability. At 0.2 A g −1 after 250 cycles, the discharge specific capacity of NCO-La0.1 (1596.2 mAh g −1 ) is far better than NiCo 2 O 4 (655.6 mAh g −1 ) without La 2 O 3 doping. Such design concept of nanostructures provides a promising way to develop high-performance anode materials for LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Zhiqiang Zhou,Jinju Ma,Kun Li,Wenwen Zhang,Kai Li,Xinghao Tu,Lanxiang Liu,Juan Xu,Hong Zhang
About one-third of the world’s food is lost and wasted each year, along with excessive carbon emission, disposals, and other environmental issues. The rotting of perishable products like fruits and vegetables accounts for the largest percentage of food waste due to their short shelf life. The storage atmosphere (H2O, O2, CO2) acts as a key role in the preservation process and could regulate plants’ physiological metabolism and microbial growth. In this work, a facile and biomimetic strategy is introduced for food preservation at room temperature employing PLLA (poly(l-lactic acid)) or chitosan porous microspheres as gas “switches” or “stomata” in a shellac membrane to regulate O2, CO2, and H2O permeability and CO2/O2 selectivity. Surface coatings on fruits or packaging films prepared through this strategy show exceptional preservation performance on five selected model fruits with different respiratory metabolisms. These hybrid materials could effectively control the gases (O2, CO2, and H2O) permeability and CO2/O2 selectivity by adding different amounts of porous microspheres or depositing small functional molecules, which demonstrate excellent antioxidant, antimicrobial, water-resistant, and reusable properties. This gas permeation control strategy has great potential in food preservation as well as other applications where a controlled atmosphere is required.
研究领域:
材料科学
·
食品科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Qi Zhou,Min Zeng,Xin Wu,Yuqing Zhang,Getong Qin
In this paper, monodispersed bicomponent microspheres were synthesized through a facile hydrothermal method with MnSO 4 ·H 2 O acting as soft templates, the target product takes a porous spherical morphology and hierarchical core-shell configuration assembled by primary TiO 2 and Mn 2 O 3 nanoparticles . In evaluating as anode, the Mn 2 O 3 /TiO 2 electrodes exhibit extraordinarily higher reversible capacity (around 1000 mAh g −1 at a current density of 100 mA/g up to 180 cycles) than bare TiO 2 , also deliver advanced rate performance and impressive cyclability (250 mAh g −1 even at 2000 mA g −1 after 1000 cycles) for promising lithium storage. The enhanced performance can be traceable to the synergistic effect and tightly coupled interfacial jointing of different components. Specifically, the differential capacity (dQ/dV) analysis has been applied to explore the capacity increasing behavior during the repeated deep cycles, indicating it is essentially related to the electrochemical reconstruction.
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
危险品化学品经营许可证（带存储）