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Biomimetic Macrophage–Fe3O4@PLGA Particle-Triggered Intelligent Catalysis for Killing Multidrug-Resistant

Jieni Fu,Xiangmei Liu,Zhaoyang Li,Yufeng Zheng,Yu Zhang,Hui Jiang,Yanqin Liang,Shengli Zhu,Zhenduo Cui,Shuilin Wu,

《工程（英文）》 doi: 10.1016/j.eng.2023.05.022

摘要： Infections with multidrug-resistant (MRD) Gram-negative bacteria, such as MRD Escherichia coli (E. coli), remain a challenge due to the lack of safe antibiotics and high fatality rates under anti-infection therapies. This work presents a form of biomimetic intelligent catalysis inspired by the selective biocatalytic property of macrophages, consisting of an intelligent controlling center (a living macrophage, MΦ) and a Fenton reaction catalyst (Fe3O4@poly(lactic-co-glycolic acid) (PLGA) nanoparticles) for killing MDR E. coli without harming normal cells. The MΦ–Fe3O4@PLGA particles (i.e., the intelligent catalysis particles) exhibit selective biocatalysis activity toward MDR E. coli by producing H2O2 and lipid droplets (LDs). This process activates the lipid metabolism and glycan biosynthesis and metabolism pathways based on the result of RNA sequencing data analysis. The H2O2 further reacts with Fe3O4@PLGA to form highly toxic hydroxyl radicals (•OH), while the LDs contain antimicrobial peptides and can target MDR E. coli. The highly toxic •OH and antimicrobial peptides are shown to combat with MDR E. coli, such that the antibacterial efficiency of the MΦ–Fe3O4@PLGA particles against MDR E. coli is 99.29% ± 0.31% in vitro. More importantly, after several passages, the intelligent catalysis function of the MΦ–Fe3O4@PLGA particles is well maintained. Hence, the concept of biomimetic intelligent catalysts displays potential for treating diseases other than infections.

关键词： Multidrug-resistant Escherichia coli     Macrophage–Fe3O4@PLGA particles     Biomimetic intelligent catalysis    

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Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

《化学科学与工程前沿（英文）》 2009年 第3卷 第4期   页码 453-456 doi: 10.1007/s11705-009-0167-8

摘要： Selective oxidation of -nitrotoluene to -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts was studied. The peripheral substituent around porphyrin rings and various process parameters of NaOH concentration, reaction temperature, reaction time and oxygen pressure all affect the selectivity of -nitrobenzaldehyde. Further, 82.0% selectivity of -nitrobenzaldehyde was achieved under the optimum conditions: 1.0×10mol•L of T(-NO)PPFeCl catalyst, 2.5mol•L of NaOH, 0.2mol•L of -nitrotoluene, 45°C and 2.0MPa for 6h.

关键词： -nitrobenzaldehyde     temperature     biomimetic     selectivity     pressure    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1412-8

摘要：

•The history of biological and artificial water channels is reviewed.

关键词： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability

《结构与土木工程前沿（英文）》   页码 1188-1198 doi: 10.1007/s11709-023-0027-5

摘要： This paper reports a comparative study of microcapsules with enhanced thermal stability and electrical conductivity inspired by the bionic thermal insulation of birds’ feathers for self-healing aged asphalt. The work is based on an in situ polymerization with composite shell components of graphene and hexamethoxymethylmelamine resin. By using graphene, microcapsules with rough surfaces are achieved, improving the interface between microcapsules and asphalt. In addition, the microcapsules’ initial thermal decomposition temperature is appropriately high, so that the stability of the microcapsule in the asphalt highway system is protected. The proportion of graphene in the microcapsule shell can regulate the microcapsule’s heat resistance because graphene modifies the shell’s structural makeup. Additionally, the microcapsules’ electrical conductivity is relatively high. The self-healing capability of bitumen sharply increases, providing benefit to the effect of microcapsules on the properties of aged asphalt.

关键词： graphene     microcapsule     bitumen     heat insulation     conductivity    

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Recent advances in cycloaddition of CO with epoxides: halogen-free catalysis and mechanistic insights

《化学科学与工程前沿（英文）》 2023年 第17卷 第12期   页码 1879-1894 doi: 10.1007/s11705-023-2354-4

摘要： The atom-economical cycloaddition of CO2 with epoxides to synthesize cyclic carbonates is a promising route for valuable utilization of CO2. Halogenide such as alkali metal halides and quaternary ammonium salt have been developed as the efficient catalysts. However, the spilled halogen causes equipment corrosion and affects the product purity. To address these concerns, the halogen-free cycloaddition of CO2 with epoxides has always been desired. In this review, we systematically discussed the halogen-free catalysis for cycloaddition of CO2 with epoxides from the mechanistic insights, aiming to promote the development of efficient halogen-free catalysts. Two types of catalysts, i.e., alternatives of halogen nucleophiles for epoxide activation, and bifunctional catalysts with Lewis acid-base sites for synergistic activation of CO2 and epoxides are summarized and emphasized. Specially, metal oxides as the potential halogen-free catalysts are highlighted due to their flexible acid-base sites for synergistic activation of CO2 and epoxides, facile preparation, and low cost.

关键词： carbon dioxide     halogen-free catalysis     cyclic carbonate     mechanistic insight    

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Biomimetic mineralization and cytocompatibility of nanorod hydroxyapatite/graphene oxide composites

Peizhen Duan, Juan Shen, Guohong Zou, Xu Xia, Bo Jin

《化学科学与工程前沿（英文）》 2018年 第12卷 第4期   页码 798-805 doi: 10.1007/s11705-018-1708-9

摘要： Nanorod hydroxyapatite (NRHA)/graphene oxide (GO) composites with weight ratios of 0.4, 1.5, and 5 have been fabricated by a facile ultrasonic-assisted method at room temperature and atmospheric pressure. The chemical structure properties and morphology of the composites were characterized by field emission source scanning electron microscope, X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy. The results indicate that the NNRHA/GO composites have an irregular surface with different degree wrinkles and are stable, and NRHA are well combined with GO. In addition, the biomimetic mineralization mechanism of hydroxyapatite on the NNRHA/GO composites in simulated body fluid (SBF) is presented. The presence of a bone-like apatite layer on the composite surface indicate that the NNRHA/GO composites facilitate the nucleation and growth of hydroxyapatite crystals in SBF for biomimetic mineralization. Moreover, the NNRHA-1.5/GO composite and pure GO were cultured with MC3T3-E1 cells to investigate the proliferation and adhesion of cells. In vitro cytocompatibility evaluation demonstrated that the NNRHA/GO composite can act as a good template for the growth and adhesion of cells. Therefore, the NNRHA/GO composite could be applied as a GO-based, free-template, non-toxic, and bioactive composite to substitute for a damaged or defect bone.

关键词： hydroxyapatite     graphene oxide     biomimetic mineralization     cytocompatibility    

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生物材料的仿生构思

姚康德,沈峰

《中国工程科学》 2000年 第2卷 第6期   页码 16-20

摘要：

过去30年里，生物材料的研究取得了显著成就，但从临床效果看，其与宿主相互作用亟待改善；哪怕是有些应用于长期埋植体内的替代物，常被机体视为异物，从而启迪人们不要仅着眼于从材料的物化性能方面构思生物材料。文章从蛋白质、糖类和脱氧核糖核酸与材料的关系出发，以细胞作为仿生生物材料的蓝本，从分子和细胞水平讨论了生物特异性材料设计，人工细胞外基质的仿生化途径以及通过材料对细胞编程凋亡的调控等方面的研究思路；试图从生命科学的广度和柔性出发，提出在不同层次和水平上进行仿生，从事生物材料设计，解决生物材料与生物体复杂接口问题，使生物材料向智能化和环境友好化发展。

关键词： 生物材料     仿生     人工细胞外基质    

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Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1343-9

摘要：

• Microalgae oil application for biodiesel synthesis is discussed.

关键词： Biodiesel     Heterogeneous catalysis     Transesterification     Microalgae oil    

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Plasma-catalysis: Is it just a question of scale?

J. Christopher Whitehead

《化学科学与工程前沿（英文）》 2019年 第13卷 第2期   页码 264-273 doi: 10.1007/s11705-019-1794-3

摘要： The issues of describing and understanding the changes in performance that result when a catalyst is placed into plasma are discussed. The different chemical and physical interactions that result and how their combination might produce beneficial results for the plasma-catalytic processing of different gas streams are outlined with particular emphasis being placed on the different range of spatial and temporal scales that must be considered both in experiment and modelling. The focus is on non-thermal plasma where the lack of thermal equilibrium creates a range of temperature scales that must be considered. This contributes in part to a wide range of inhomogeneity in different properties such as species concentrations and electric fields that must be determined experimentally by methods and be incorporated into modelling. It is concluded that plasma-catalysis is best regarded as conventional catalysis perturbed by the presence of a discharge, which modifies its operating conditions, properties and outcomes often in a very localised way. The sometimes used description “plasma-activated catalysis” is an apt one.

关键词： plasma catalysis     plasma-activated catalysis     non-thermal plasma     CO2 conversion    

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Frontiers of Catalysis Chemistry and Technology

《化学科学与工程前沿（英文）》 2018年 第12卷 第1期   页码 1-2 doi: 10.1007/s11705-018-1704-0

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Roles of glutathione and L-cysteine in the biomimetic green synthesis of CdSe quantum dots

Ling-Li Li, Yin-Hua Cui, Jie-Jie Chen, Han-Qing Yu

《环境科学与工程前沿（英文）》 2017年 第11卷 第6期 doi: 10.1007/s11783-017-0948-0

摘要： Biological synthesis of quantum dots (QDs) as an environmental-friendly and facile preparation method has attracted increasing interests. However, it is difficult to distinguish the roles of bio-thiols in QDs synthesis process because of the complex nature in organisms. In this work, the CdSe QDs synthesis conditions in organisms were reconstructed by using a simplified in vitro approach to uncover the roles of two small bio-thiols in the QDs formation. CdSe QDs were synthesized with glutathione (GSH) and L-cysteine (Cys) respectively. Compared with Cys at the same molar concentration, the CdSe QDs synthesized by GSH had a larger and broader particle size distribution with improved optical properties and crystal structure. Furthermore, quantum chemical calculations indicate that the stronger Cd2+ binding capacity of GSH contributed a lot to the CdSe QDs formation despite of the greater capability Cys for selenite reduction. This work clearly demonstrates the different roles of small thiols in the Cd2+ stabilization in the environment and biomimetic QDs synthesis process.

关键词： CdSe     Quantum dots (QDs)     Biomimetic synthesis     Bio-thiols     Glutathione (GSH)     Cysteine (Cys)    

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Scaling up of cluster beam deposition technology for catalysis application

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1360-1379 doi: 10.1007/s11705-021-2101-7

摘要： Many research works have demonstrated that the combination of atomically precise cluster deposition and theoretical calculations is able to address fundamental aspects of size-effects, cluster-support interactions, and reaction mechanisms of cluster materials. Although the wet chemistry method has been widely used to synthesize nanoparticles, the gas-phase synthesis and size-selected strategy was the only method to prepare supported metal clusters with precise numbers of atoms for a long time. However, the low throughput of the physical synthesis method has severely constrained its wider adoption for catalysis applications. In this review, we introduce the latest progress on three types of cluster source which have the most promising potential for scale-up, including sputtering gas aggregation source, pulsed microplasma cluster source, and matrix assembly cluster source. While the sputtering gas aggregation source is leading ahead with a production rate of ~20 mg·h–1, the pulsed microplasma source has the smallest physical dimensions which makes it possible to compact multiple such devices into a small volume for multiplied production rate. The matrix assembly source has the shortest development history, but already show an impressive deposition rate of ~10 mg·h–1. At the end of the review, the possible routes for further throughput scale-up are envisaged.

关键词： nanoparticle     cluster     cluster beam deposition     magnetron sputtering     heterogeneous catalysis    

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水处理仿生膜研究进展

曾艳军,张林,陈欢林

《中国工程科学》 2014年 第16卷 第7期   页码 10-16

摘要：

本文首先介绍了细胞膜中磷脂双分子层与膜蛋白的结构以及水快速传输的机理。在此基础上分别对以膜蛋白、碳纳米管和人造有机纳米孔道为水通道的仿生膜研究进展进行了综述，着重阐述了以膜蛋白为水通道的仿生膜中两性嵌段共聚物基质的优点、规模化制备面临的问题；以碳纳米管为水通道的仿生膜中水快速传输的机理与膜的制备方法；以及人造有机纳米孔道的设计方法。最后提出了水处理仿生膜所面临的挑战，展望了仿生膜发展的前景。

关键词： 细胞膜     水通道蛋白     仿生膜     碳纳米管     人造水通道    

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Preface to special issue on “Advanced Materials and Catalysis”

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1357-1359 doi: 10.1007/s11705-021-2119-x

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Shape selective catalysis in methylation of toluene: Development, challenges and perspectives

Jian Zhou, Zhicheng Liu, Yangdong Wang, Dejin Kong, Zaiku Xie

《化学科学与工程前沿（英文）》 2018年 第12卷 第1期   页码 103-112 doi: 10.1007/s11705-017-1671-x

摘要： Toluene methylation with methanol offers an alternative method to produce -xylene by gathering methyl group directly from C1 chemical sources. It supplies a “molecular engineering” process to realize directional conversion of toluene/methanol molecules by selective catalysis in complicated methylation system. In this review, we introduce the synthesis method of -xylene, the development history of methylation catalysts and reaction mechanism, and the effect of reaction condition in -selective technical process. If constructing -xylene as the single target product, the major challenge to develop -selective toluene methylation is to improve the -xylene selectivity without, or as little as possible, losing the fraction of methanol for methylation. To reach higher yield of -xylene and more methanol usage in methylation, zeolite catalyst design should consider improving mass transfer and afterwards covering external acid sites by surface modification to get short “micro-tunnels” with shape selectivity. A solid understanding of mass transfer will benefit realizing the aim of converting more methanol feedstock into -methyl group.

关键词： shape selective catalysis     methylation of toluene    

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标题 作者 时间 类型 操作

Biomimetic Macrophage–Fe3O4@PLGA Particle-Triggered Intelligent Catalysis for Killing Multidrug-Resistant

Jieni Fu,Xiangmei Liu,Zhaoyang Li,Yufeng Zheng,Yu Zhang,Hui Jiang,Yanqin Liang,Shengli Zhu,Zhenduo Cui,Shuilin Wu,

期刊论文

Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

期刊论文

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

期刊论文

Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability

期刊论文

Recent advances in cycloaddition of CO with epoxides: halogen-free catalysis and mechanistic insights

期刊论文

Biomimetic mineralization and cytocompatibility of nanorod hydroxyapatite/graphene oxide composites

Peizhen Duan, Juan Shen, Guohong Zou, Xu Xia, Bo Jin

期刊论文

生物材料的仿生构思

姚康德,沈峰

期刊论文

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

期刊论文

Plasma-catalysis: Is it just a question of scale?

J. Christopher Whitehead

期刊论文

Frontiers of Catalysis Chemistry and Technology

期刊论文

Roles of glutathione and L-cysteine in the biomimetic green synthesis of CdSe quantum dots

Ling-Li Li, Yin-Hua Cui, Jie-Jie Chen, Han-Qing Yu

期刊论文

Scaling up of cluster beam deposition technology for catalysis application

期刊论文

水处理仿生膜研究进展

曾艳军,张林,陈欢林

期刊论文

Preface to special issue on “Advanced Materials and Catalysis”

期刊论文

Shape selective catalysis in methylation of toluene: Development, challenges and perspectives

Jian Zhou, Zhicheng Liu, Yangdong Wang, Dejin Kong, Zaiku Xie

期刊论文