In-situ mechanochemically tailorable 2D gallium oxyselenide for enhanced optoelectronic NO2 gas sensing at room temperature

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 451, P. 131184 - 131184

Published: March 11, 2023

The adverse effects of NO2 on the environment and human health promote development high-performance gas sensors to address need for monitoring. Two-dimensional (2D) metal chalcogenides have been considered an emerging group NO2-sensitive materials, while incomplete recovery low long-term stability are two major hurdles their practical implementation. transformation into oxychalcogenides is effective strategy alleviate these drawbacks, but usually requires multiple-step synthesis lacks controllability. Here, we prepare tailorable 2D p-type gallium oxyselenide with thicknesses 3-4 nm, through a single-step mechanochemical that combines in-situ exfoliation oxidation bulk crystals. optoelectronic sensing performances such different oxygen contents investigated at room temperature, in which GaSe0.58O0.42 exhibits largest response magnitude 82.2% towards 10 ppm irradiation UV, full reversibility, excellent selectivity, long term least one month. Such overall significantly improved over those reported oxygen-incorporated chalcogenide-based sensors. This work provides feasible approach manner demonstrates great potential room-temperature fully reversible sensing.

Language: Английский

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Room-Temperature Optoelectronic NO₂ Sensing Using Two-Dimensional Gallium Oxyselenides

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 3229 - 3238

Published: Jan. 29, 2024

Detecting trace-level nitrogen dioxide (NO2) in real time is critical due to its adverse impact on human health and the environment. However, achieving a fast response, high sensitivity selectivity, excellent stability NO2 detection remains challenge. Two-dimensional (2D) metal chalcogenides are promising for gas sensing, but their practical use thwarted by issues like insufficient recovery poor stability. As an alternative, it anticipated that 2D oxychalcogenides, emerging class of gas-sensing semiconductor materials, offer favorable characteristics. In this work, p-type gallium oxyselenide nanosheets tailored with various oxygen concentrations synthesized regulating annealing temperature selenide. We find sensor based GaSe0.31O0.69 exhibits highest response 58.28% 10 ppm at room temperature. addition, has more than times higher interfering gases. More importantly, material exhibited outstanding long-term (up 4 months) demonstrated reversible This work paves cost-effective way development room-temperature sensors, exhibiting exceptional

Language: Английский

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Applications of liquid metals in nanotechnology

Nanoscale Horizons, Journal Year: 2021, Volume and Issue: 7(2), P. 141 - 167

Published: Dec. 23, 2021

This review presents the fascinating properties and emerging applications of liquid metals alloys at nanoscale.

Language: Английский

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Boosting room-temperature NO2 detection via in-situ interfacial engineering on Ag2S/SnS2 heterostructures

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 434, P. 128782 - 128782

Published: March 26, 2022

Language: Английский

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Liquid metal gallium-based printing of Cu-doped p-type Ga2O3 semiconductor and Ga2O3 homojunction diodes

Applied Physics Reviews, Journal Year: 2023, Volume and Issue: 10(1)

Published: Jan. 3, 2023

As a promising third-generation semiconductor, gallium oxide (Ga2O3) is currently facing bottleneck for its p-type doping. The doping process of conventional semiconductors usually introduces trace impurities, which major technical problem in the electronics industry. In this article, we conceived that complexity could be significantly alleviated, and high degree control over results attained using selective enrichment liquid metal interfaces harvesting doped semiconductor layers. An appropriate mechanism thus proposed to prepare semiconducting based on multicomponent alloys. Liquid alloys with certain Cu weight ratios bulk are utilized harvest Cu-doped Ga2O3 films, result conductivity. Then, field-effect transistors were integrated printed p n-type films demonstrated own excellent electrical properties stability. Au electrodes fabricated layers showed good Ohmic behavior. Furthermore, high-power diodes realized homojunction through combining van der Waals stacking transfer printing. diode exhibited efficiency at room temperature, involving rectification ratio 103 forward current density 10 V (J@10 V) 1.3 mA. This opens opportunity cost-effective creation controlled dopants. disclosed here suggests important strategies further synthesis manufacturing routes industries.

Language: Английский

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Liquid Metal Combinatorics toward Materials Discovery

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(52)

Published: July 7, 2023

Abstract Liquid metals and their derivatives provide several opportunities for fundamental practical exploration worldwide. However, the increasing number of studies shortage desirable materials to fulfill different needs also pose serious challenges. Herein, address this issue, a generalized theoretical frame that is termed as “Liquid Metal Combinatorics” (LMC) systematically presented, summarizes promising candidate technical routes toward new generation material discovery. The major categories LMC are defined, eight representative methods manufacturing advanced outlined. It illustrated abundant targeted can be efficiently designed fabricated via through deep physical combinations, chemical reactions, or both among main bodies liquid metals, surface chemicals, precipitated ions, other materials. This represents large class powerful, reliable, modular innovating general achieved combinatorial not only maintained typical characteristics but displayed distinct tenability. Furthermore, fabrication strategies, wide extensibility, pivotal applications classified. Finally, by interpreting developmental trends in area, perspective on provided, which warrants its future society.

Language: Английский

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Mechanism behind the Controlled Generation of Liquid Metal Nanoparticles by Mechanical Agitation

ACS Nano, Journal Year: 2024, Volume and Issue: 18(17), P. 11139 - 11152

Published: April 15, 2024

The size-controlled synthesis of liquid metal nanoparticles is necessary in a variety applications. Sonication common method for breaking down bulk metals into small particles, yet the influence critical factors such as composition has remained elusive. Our study employs high-speed imaging to unravel mechanism particle formation during mechanical agitation. Gallium-based metals, with and without secondary bismuth, indium, tin, are analyzed observe effect cavitation surface eruption sonication release. impact inclusion investigated on metals' tension, solution turbidity, size distribution generated particles. work evidences that there an inverse relationship between tension ability be broken by sonication. We show even 0.22 at. % bismuth gallium, significantly decreased from 558 417 mN/m (measured Milli-Q water), resulting enhanced generation rate: 3.6 times increase turbidity ∼43% reduction particles gallium alloy compared same duration. particles' photocatalysis annealed also presented applicability process proof-of-concept demonstration. This contributes broader understanding nanoparticles, controlled characteristics, via agitation diverse

Language: Английский

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Ultrathin Two-Dimensional Titanium Oxysulfide for Enhanced Sensitivity and Stability of Room Temperature NO2 Sensing

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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Tunable Synthesis of 2D Bismuth Oxyhydroxide and Oxysulfide from Solid–Liquid Interfacial Reaction for High Performance Optoelectronic Gas Sensing

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

The self-limiting Cabrera-Mott oxidation reaction on metal surfaces provides an effective pathway for synthesizing atomically thin 2D oxide. Inspired by this reaction, it is proposed that solid bismuth metals can react with dissolved oxygen and water molecules in aqueous environment, forming ultrathin oxyhydroxide layer their surfaces. lattice mismatch between the surface underlying pure enables mechanical exfoliation of detached nanosheets. Moreover, sulfurization interaction H2S expands applicability solid-liquid interfacial reactions realizing oxysulfide, effectively tuning electronic bandgap energy, work function, band position. Given its good photoresponse from blue to UV light, optoelectronic gas sensing performances oxysulfide are investigated. Under purple light irradiation, Bi2O1.12S1.88-based sensor exhibits excellent response factor 48.5% toward 10 ppb NO2, which lowest detection limit reported compounds-based so far. This a novel facile synthesis approach simultaneously demonstrates substantial potential high-performance sensing.

Language: Английский

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Room-Temperature NO₂ Sensor Based on Oxygen Vacancy-Rich SnO Nanosheets

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Language: Английский

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