JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Deyan Gong,Lu Liu,Ziwen Xiao,Zhuonan Yang,Yaoyu Hu,Taikui Sheng,Yajing Liu,Zhaohua Miao,Zhengbao Zha
Nanozymes have made great achievements in the research of tumor therapy. However, due to the complex tumor microenvironment, the catalytic activity and biosafety of nanozymes are limited. High catalytic efficiency is a relentless pursuit for the preparation of high-performance nanozymes. Dimensional reduction from 3D nanoscale metal–organic frameworks (nMOFs) to 2D nanoscale metal–organic layers (nMOLs) increases the encounters frequency of nanozymes and substrate, which facilitates the diffusion of reactive oxygen species (ROS) from nMOLs, thus significantly improving the effectiveness of chemodynamic therapy. In this study, He@Ce-BTC nMOF and He@Ce-BTB nMOL based on Ce 6 SBUs were synthesized by solvothermal reaction. Compared with the 3D nMOFs, the 2D nanozymes He@Ce-BTB nMOL possessed enhanced ROS catalytic efficiency, were able to be activated by the tumor acidic microenvironment with the polymerase mimetic activities (CAT, POD, GSH-OXD) that enhances the lipid peroxidation process and accelerates the process of ferroptosis thereby killing tumor cells. In addition, He@Ce-BTB does not affect normal tissue cells, thus avoiding diffusion-induced side effects. He@Ce-BTB has shown excellent therapeutic effects in vitro and in vivo , which indicates its potential for clinical application, and is expected to become a new generation of drugs for the treatment of tumors.
研究领域:
生物医学工程
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肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
·
2012
·
IF 1.856
Zhanwang Zhu,Xinlin Wei,Feng Xu,Yuanfeng Wang
The thermal decomposition approach, reverse micro-emulsion system and surface modification technique had been successfully used to synthesis single magnetic core Fe 3 O 4 @Organic Layer@SiO 2 –NH 2 complex microspheres . The magnetization of the magnetic microspheres core could be easily tuned between 28 and 56 emu/g by adjusting the amount of 2-mercaptobarbituric acid. It was found that the Organic Layer to some extent had a protective effect on avoiding Fe 3 O 4 being oxidized into Fe 2 O 3 . Each Fe 3 O 4 @Organic Layer microsphere could be coated uniformly by about 30 nm of silica shell. The average diameter of the Fe 3 O 4 @Organic Layer@SiO 2 composites was about 538 nm. The saturation magnetization of the Fe 3 O 4 @Organic Layer@SiO 2 complex microspheres was 12.5% less than magnetic microspheres cores. The Fe 3 O 4 @Organic Layer@SiO 2 –NH 2 composites possessed a huge application potentiality in specificity enriching and separating biological samples.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Si-Yuan Ye,Jia-Qian Wu,Bin-Bin Yu,Yi-Wei Hua,Zongsu Han,Zi-Yi He,Zheng Yan,Meng-Li Li,Yan Meng,Xuebo Cao
Basic requirements for advanced and practical supercapacitors need electrode materials with strong stability, high surface area, well-defined porosity, and enhanced capability of ion insertion and electron transfer. It is worth mentioning that the two-dimensional cluster-based Ni/Co–organic layer (Ni0.7Co0.3-CMOL) inherits high stability from the Kagóme lattice and shows excellent pseudocapacitance behavior. As an optimized atomic composition, this crystalline CMOL exhibits excellent performance and stability both in 1.0 M KOH and All-Solid-State Flexible Asymmetric Supercapacitor (ASCs). The specific capacitance values are 1211 and 394 F g–1 and the energy density is 54.67 Wh kg–1 at 1 A g–1. Good cycling stability is characterized by its capacitance retention, maintained at 92.4% after 5000 cycles in a three-electrode system and 90% after 2000 cycles at 20 A g–1 for assembled All-Solid-State Flexible ASCs. An in situ XRD technique was used in the three-electrode system, which showed that there was no signal of crystalline substance that affected the cyclic stability of the material while charging and discharging. These superior results prove that Ni0.7Co0.3-CMOL is a promising candidate for supercapacitor applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
He Zhao,Cheng-an Tao,Shiyin Zhao,Xiaorong Zou,Fang Wang,Jianfang Wang
The development of very efficient bifunctional catalysts for the simultaneous detoxification of two kinds of the deadliest chemical warfare agents (CWAs), nerve agent and blister agent, is highly desirable. In this study, two porphyrin-based ligands [tetrakis(4-carboxyphenyl) porphyrin (TCPP) and protoporphyrin IX (PPIX)] are introduced into 2D Zr-1,3,5-tris(4-carboxyphenyl)benzene (BTB) metal–organic layers (MOLs), composed of six-connected Zr6 nodes and the tritopic carboxylate ligand BTB, by a solvent-assisted ligand incorporation method. The loads of TCPP and PPIX are 6.4 and 10.9 wt %, respectively. The detoxification of simulants of the nerve agent and the blister agent was conducted to investigate the catalytic activity of porphyrin-moiety-functionalized MOLs. The reaction half-life of optimal TCPP-functionalized MOL catalyzing the hydrolysis of a nerve agent simulant is only 2.8 min, meanwhile, the half-life of the selective catalytic oxidation of a blister agent simulant is only 1.2 min under LED illumination. More importantly, such a degradation half-life is only about 4 min under natural sunlight (∼60 mW/cm2). To our knowledge, TCPP-functionalized MOL is by far the most efficient catalyst for blister agent simulant degradation under solar light. Therefore, 2D ultrathin MOLs on demand appear to be a promising and efficient material platform for the development of bifunctional catalysts for CWA protection.
研究领域:
化学
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材料科学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Danmiao Kang,Saydual Sardar,Rui Zhang,Hart Noam,Jingyun Chen,Linge Ma,Wenbin Liang,Chunsheng Shi,John P. Lemmon
Lithium metal (Li) is the most promising anode for high energy density secondary battery system, but the dendrite growth makes it very dangerous for commercial application. An artificial SEI layer with high ionic conductivity and low electronic conductivity has proven to be an effective way to improve the stability of Li anode. Organic layer is introduced on Li surface by in-situ spontaneous reaction between Li and carboxylic acid. The as-formed carboxylate layer can effectively limit the Li deposition under it and suppress the dendrite growth. And the uniformity of the organic layer is the key factor for achieving stable cycling performance. With a homogenous carboxylate layer of 1 μm, the Li electrode can sustain 1000 h of charge-discharge cycling at 0.5 mA cm −2 . DFT calculation demonstrates that the enhanced absorption energy by oxygen atoms in lithium carboxylate contributes to the increased lithiophilicity and decreased depositing overpotential. This research provides a way for practical application of Li metal anode .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Canlin Zhang,Shuai Yang,Ting Wang,Song Xu,Peng Jin,Hongjun Dong,Yi Zhang,Yu Chen
γ-aminopropyltriethoxy silane organic layered double hydroxides (LDHs) and SBS were combined into LDHs/SBS composite to improve anti-ageing performance of SBS modified bitumen (SMB). XPS and SEM showed that organic LDHs (OLDHs) was successfully grafted onto SBS, and OLDHs could be more evenly distributed in SBS, which was conducive to improve the anti-degradation capability of SBS. Compared with SBS and LDHs/SBS composite, the interaction between OLDHs/SBS composite and bitumen was stronger, resulting in the better stabilization of SBS and LDHs in bitumen. Furthermore, OLDHs/SBS composite could enhance the high-temperature property of SMB. SMB became hard and brittle during ageing, the physical and rheological properties were remarkably deteriorated. LDHs/SBS and OLDHs/SBS composite could alleviate the damage of ageing on the high- and low-temperature performance of SMB and enhance the anti-ageing capacity, particularly OLDHs/SBS composite. Then, the improvement mechanism of OLDHs/SBS and LDHs/SBS composite on the anti-ageing capability of SMB was analyzed at microscopic scale. LDHs/SBS and OLDHs/SBS composite could hinder the infiltration of oxygen into bitumen and decrease the oxygen content, and simultaneously decelerate the oxygen diffusion rate in bitumen. The synergistic combination of these two functions conspicuously diminished the probability of oxygen colliding with bitumen or SBS, which relieved the ageing of bitumen and the degradation of SBS, and ultimately improved the anti-ageing capability of SMB. Furthermore, due to the better stability, the effectiveness of OLDHs/SBS composite was more notable than LDHs/SBS composite, OLDHs/SBS composite demonstrated superior improvement on the anti-ageing capability of SMB than LDHs/SBS composite.
研究领域:
土木工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Wen-Xiong Shi,Ru-Zhen Ren,Yao Cheng,Fu-Gui Zeng,Xiang-Wei Guo,Zhi-Ming Zhang
Metal–organic framework (MOF) materials have broad application prospects in catalysis because of their ordered structure and molecular adjustability. However, the large volume of bulky MOF usually leads to insufficient exposure of the active sites and the obstruction of charge/mass transfer, which greatly limits their catalytic performance. Herein, we developed a simple graphene oxide (GO) template method to fabricate ultrathin Co-metal–organic layer (2.0 nm) on reduced GO (Co-MOL@r-GO). The as-synthesized hybrid material Co-MOL@r-GO-2 exhibits highly efficient photocatalytic performance for CO2 reduction, and the CO yield can reach as high as 25,442 μmol/gCo-MOL, which is over 20 times higher than that of the bulky Co-MOF. Systematic investigations demonstrate that GO can act as a template for the synthesis of the ultrathin Co-MOL with more active sites and can be used as the electron transport medium between the photosensitizer and the Co-MOL to enhance the catalytic activity for CO2 photoreduction.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Luotian Lv,Guixian Shen,Han Feng,Yao Liu,Hao Liu,Hao Zhang,Zhiyong Wang,Yongqing Wang
Recent studies have revealed that the integration of metal nanoparticles (NPs) with photocatalysts allows the metal NPs to serve as cocatalysts, significantly enhancing reactant efficiency near nanostructures through the surface plasmon resonance (SPR) effect. On this basis, we synthesized highly reactive FePt quantum dots (FePt QDs) with tailored configurations, manipulating the Pt coordination environment and combining FePt QDs with ultrathin two-dimensional nickel metal–organic layer (Ni-MOL) nanosheets. X-ray absorption fine spectroscopy (XAFS) confirmed the distinctive Pt–Fe configuration after photoactivation. The optimized loading amount of FePt QDs led to a hydrogen evolution reaction (HER) yield of 113 mmol·g–1·h–1 after activation, with the catalyst remaining stable over five cycles. The improved reaction efficiency stemmed from Pt coordination adjustments and a localized SPR effect, supported by ultraviolet–visible (UV–vis), infrared (IR), Raman, and XAFS characterizations. A comparative analysis was conducted with Ni-MOL deposited with platinum NPs, further underscoring the distinct advantages of FePt QDs and corroborating by density functional theory (DFT) calculations, which revealed favorable d-band center properties. These findings offer a promising avenue for the development of highly efficient and stable nanoalloy photocatalysts.
研究领域:
材料科学
·
催化
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Enqing Liu,Jiangping Zhu,Weijun Yang,Fan Liu,Can Huang,Shuangfeng Yin
In this work, a functionalized metal–organic layer (MTTB MOL) was first synthesized and characterized, where MTTB means that it was synthesized from TTB (4,4′,4″-s-triazine-2,4,6-triyl-tribenzoate). On this basis, a hybrid metal–organic framework of PCN-222(Co)@MTTB was further synthesized by combining two-dimensional (2D) MTTB MOLs and three-dimensional (3D) PCN-222(Co) MOFs (metal–organic frameworks) via a one-step method. When applied to the cycloaddition reaction of carbon dioxide (CO2) and epoxides, PCN-222(Co)@MTTB was found to exhibit excellent synergistic catalytic performance under mild conditions. The unique catalytic activity of the composite is due to the combination of the exposed acidic sites (Co2+, Zr4+) and basic sites (−N– groups) within the matrix of the MOF structure, thereby providing a new method for the exploration of effective catalysts for the conversion of CO2 to value-added chemicals under mild conditions.
研究领域:
材料科学
·
催化
·
化学工程
·
环境化学
✓ 已验证
产品关联
DOI
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 8
·4505-4514
·
IF 11.301
Qianqian Yu,Xinda You,Hong Wu,Yanlei Su,Runnan Zhang,Yanan Liu,Chao Yang,Jianliang Shen,Jinqiu Yuan,Zhongyi Jiang
Amphiphobic fluorine materials hold great promise for fabricating self-cleaning membranes. However, the severely impeded water transport in hydrophobic fluorine-based membranes and the weak interaction with the substrate of the low-surface-energy fluorine materials represent two major obstacles for efficient water purification. Herein, we design an ultrathin fluorine-based membrane via coordination-driven metal-bridging assembly. An Fe3+-rich metal–organic layer is constructed on a porous substrate by coordination between polyphosphate ligands and Fe3+ ions, accompanied by the assembly of perfluorosulfonate polymer ligands (Nafion®) via the bridging effect of Fe3+ ions for the metal-bridging fluorine-based membrane (MBFM). By virtue of the flexible modulation of Fe3+ and unique self-assembly of Nafion®, a defect-free 58 nm-thick MBFM featuring an ultrahigh surface fluorine content (47.6 at%) and underwater superoleophobicity (∼160°) is achieved, which displays a superior water permeance of 125.2 L m−2 h−1 bar−1 (2–10 times higher than that of state-of-the-art membranes with dye rejections above 90%) and versatile resistance towards both spreading and non-spreading foulants (flux decline ratios below 8%). This metal-bridging assembly strategy may shed light on advanced membrane fabrication from rationally designed ligands and functional moieties.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 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）