Synthesis of orthogonally assembled 3D cross-stacked metal oxide semiconducting nanowires

Ren, Yuan; Zou, Yidong; Liu, Yang; Zhou, Xinran; Ma, Junhao; Zhao, Dongyuan; Wei, Guangfeng; Ai, Yuejie; Xi, Shibo; Deng, Yonghui

doi:10.1038/s41563-019-0542-x

Cited by 211 publications

(166 citation statements)

References 54 publications

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“…There are abundant categories of gas sensors, among which chemiresistive type has been drawing extensive attention on account of its simplicity in sensor structures, maturity in micro-or nano-device fabrication, and compatibility with modern electronics as well as low cost [5][6][7]. The key part of chemiresistive gas sensor is the sensing materials, generally including metal oxides semiconductors (MOSs), conductive polymers, quantum dots, and so on [8][9][10][11][12]. For those sensing materials, it still remains a big challenge to balance the sensitivity, selectivity, working temperature and response/recovery speed.…”

Section: Introductionmentioning

confidence: 99%

Berlin Green Framework-Based Gas Sensor for Room-Temperature and High-Selectivity Detection of Ammonia

et al. 2021

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Ammonia detection possesses great potential in atmosphere environmental protection, agriculture, industry, and rapid medical diagnosis. However, it still remains a great challenge to balance the sensitivity, selectivity, working temperature, and response/recovery speed. In this work, Berlin green (BG) framework is demonstrated as a highly promising sensing material for ammonia detection by both density functional theory simulation and experimental gas sensing investigation. Vacancy in BG framework offers abundant active sites for ammonia absorption, and the absorbed ammonia transfers sufficient electron to BG, arousing remarkable enhancement of resistance. Pristine BG framework shows remarkable response to ammonia at 50–110 °C with the highest response at 80 °C, which is jointly influenced by ammonia's absorption onto BG surface and insertion into BG lattice. The sensing performance of BG can hardly be achieved at room temperature due to its high resistance. Introduction of conductive Ti3CN MXene overcomes the high resistance of pure BG framework, and the simply prepared BG/Ti3CN mixture shows high selectivity to ammonia at room temperature with satisfying response/recovery speed.

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Section: Introductionmentioning

confidence: 99%

Berlin Green Framework-Based Gas Sensor for Room-Temperature and High-Selectivity Detection of Ammonia

et al. 2021

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“…it possesses a strong carcinogenicity to human beings [49][50][51]. Therefore, increasing attention has been attracted for the development of gas sensors in manufacturing industries and human life for the detection of EB.…”

Section: Science China Materialsmentioning

confidence: 99%

Oriented assembly of monomicelles in beam stream enabling bimodal mesoporous metal oxide nanofibers

Qiu

Sun

et al. 2021

Sci. China Mater.

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The assembly of monomicelles along onedimension (1D) to construct tubular or fibrous mesostructures is greatly desired but still challenging. Herein, we have demonstrated a facile strategy to synthesize 1D bimodal mesoporous metal oxides (e.g., WO 3 , WO 3 /Pd, WO 3 /PdCu, TiO 2 , and ZrO 2 ) nanofibers (NFs) through assembling the organic-inorganic composite monomicelles in a beam stream generated via an electrospinning technique. This facile and repeatable methodology relies on the preparation of copolymer@metal-complex monomicelles in an anisotropic solution and oriented assembly of them in the beam stream by the selective evaporation of solvent. WO 3 and its derivatives are chosen as the demo, which show a uniform continuous fibrous structure with dual mesopore sizes (~4.0 and 7.6 nm) and large surface area (~93.1 m 2 g −1 ). Benefitting from the unique textual structure, gas sensors made by Pd-decorated mesoporous WO 3 NFs display outstanding comprehensive sensing performance to ethylbenzene, including a high sensitivity (52.5), an ultralow detection limit (50 ppb), and fast response/ recovery kinetics (11/16 s) as well as an outstanding selectivity, which render them promising for rapid environmental monitoring.

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“…[ 69–72 ] In addition, spontaneous micellization can induce the coassembly between amphiphilic surfactants and inorganic precursors (i.e., inorganic salt, nanoparticles/nanoclusters, or polyoxometallate) via noncovalent bonds, such as hydrophobic interaction, electrostatic interaction, van der Waals forces, and hydrogen bonding. [ 73–76 ] It can overcome the drawbacks of hard‐templating synthesis, and it is convenient to tune pore parameters (e.g., pore size, pore volume, and pore types) through changing the molecular weights, length of hydrophilic/hydrophobic chains, and reactant ratio. [ 77,78 ] Based on the concept of template synthesis, a series of mesoporous materials with high‐quality porous structure have been fabricated and applied in drug delivery, including mesoporous‐silica‐based, ‐carbon‐based, ‐metal oxide, MOF, and clay mineral materials.…”

Section: Introductionmentioning

confidence: 99%

Tailored Mesoporous Inorganic Biomaterials: Assembly, Functionalization, and Drug Delivery Engineering

et al. 2020

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Infectious or immune diseases have caused serious threat to human health due to their complexity and specificity, and emerging drug delivery systems (DDSs) have evolved into the most promising therapeutic strategy for drug‐targeted therapy. Various mesoporous biomaterials are exploited and applied as efficient nanocarriers to loading drugs by virtue of their large surface area, high porosity, and prominent biocompatibility. Nanosized mesoporous nanocarriers show great potential in biomedical research, and it has become the research hotspot in the interdisciplinary field. Herein, recent progress and assembly mechanisms on mesoporous inorganic biomaterials (e.g., silica, carbon, metal oxide) are summarized systematically, and typical functionalization methods (i.e., hybridization, polymerization, and doping) for nanocarriers are also discussed in depth. Particularly, structure–activity relationship and the effect of physicochemical parameters of mesoporous biomaterials, including morphologies (e.g., hollow, core–shell), pore textures (e.g., pore size, pore volume), and surface features (e.g., roughness and hydrophilic/hydrophobic) in DDS application are overviewed and elucidated in detail. As one of the important development directions, advanced stimuli‐responsive DDSs (e.g., pH, temperature, redox, ultrasound, light, magnetic field) are highlighted. Finally, the prospect of mesoporous biomaterials in disease therapeutics is stated, and it will open a new spring for the development of mesoporous nanocarriers.

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Synthesis of orthogonally assembled 3D cross-stacked metal oxide semiconducting nanowires

Cited by 211 publications

References 54 publications

Berlin Green Framework-Based Gas Sensor for Room-Temperature and High-Selectivity Detection of Ammonia

Berlin Green Framework-Based Gas Sensor for Room-Temperature and High-Selectivity Detection of Ammonia

Oriented assembly of monomicelles in beam stream enabling bimodal mesoporous metal oxide nanofibers

Tailored Mesoporous Inorganic Biomaterials: Assembly, Functionalization, and Drug Delivery Engineering

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