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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Liquid-tin-printed two-dimensional SnO for optoelectronic NO₂ gas sensing at room temperature

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(41), P. 14187 - 14198

Published: Jan. 1, 2023

The sensor based on 2D SnO nanosheets exhibits high selectivity for NO 2 and excellent long-term stability.

Language: Английский

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Defective WO₃ Nanosheets with (002)-Exposed Facet for Highly Sensitive Acetone Detection

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(13), P. 12211 - 12218

Published: July 5, 2023

Defect and facet engineering are the two effective approaches to tune surface reactivity of metal-oxide-based sensing materials. Here, oxygen vacancies defective WO3 nanosheets with exposed (002) crystal [D-WO3-(002)] were obtained by a simple hydrothermal–hydrogenation process. The results revealed that D-WO3-(002)-based acetone sensor exhibits excellent comprehensive gas sensitive performance: low limit detection (0.5 ppm), wide range 0.5–100 ppm (S = 2.8∼45.6), high selectivity, fast response–recovery, repeatability. outstanding gas-sensing performance is attributed synergistic effects dominant defect vacancy structure, which effectively improved monoclinic nanosheets. For highly performance, this work demonstrates tremendous potential application prospect for environmental monitoring non-invasive diagnosis diabetes.

Language: Английский

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A comprehensive review on synthesis, properties, and applications of quaternary transition metal oxychalcogenides

FlatChem, Journal Year: 2024, Volume and Issue: 44, P. 100619 - 100619

Published: Jan. 25, 2024

Language: Английский

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