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- W4313894054 abstract "The ever-growing modern industry promotes the evolution of gas sensors for environmental monitoring and safety inspection. However, traditional chemiresistive gas sensors still suffer from drawbacks of high power consumption and detection limit, mainly due to the insufficient charge-transfer ability of gas-sensing materials. Here, an optoelectronic gas sensor that can detect ppb-level ammonia at room temperature is constructed based on core-shell g-C3N4@WO3 heterocomposites. The growth of WO3 nanosheets on graphitic g-C3N4 nanosheets was precisely controlled, achieving well-defined g-C3N4@WO3 core-shell architectures. Based on the synergism between light activation and the amplification effect of in situ-formed heterojunctions, the g-C3N4@WO3 sensor exhibits improved sensing characteristics for reliable ammonia detection. As compared with the pristine g-C3N4 sensor, the sensor response toward ammonia is enhanced 21 times and the detection limit is reduced from 308 to 108 ppb. This work provides a successful approach for the in situ formation of core-shell g-C3N4@WO3 interfacial composites and offers an easy solution for the rational design of advanced optoelectronic gas sensors." @default.
- W4313894054 created "2023-01-10" @default.
- W4313894054 creator A5026950474 @default.
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- W4313894054 date "2023-01-09" @default.
- W4313894054 modified "2023-10-15" @default.
- W4313894054 title "Room-Temperature Optoelectronic Gas Sensor Based on Core–Shell g-C<sub>3</sub>N<sub>4</sub>@WO<sub>3</sub> Heterocomposites for Efficient Ammonia Detection" @default.
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- W4313894054 doi "https://doi.org/10.1021/acs.analchem.2c05143" @default.
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