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Ce–Ag Active Bimetallic Pairs in Two-Dimensional SnS2 for Enhancing NO2 Sensing
ACS Sensors ( IF 8.2 ) Pub Date : 2024-01-12 , DOI: 10.1021/acssensors.3c01924
Huimin Yang 1 , Zhenming Du 1 , Yazhou Yang 1 , Qirui Wu 1 , Chaofan Ma 1 , Huiyu Su 1 , Xiaoxia Wang 1 , Dawen Zeng 1
ACS Sensors ( IF 8.2 ) Pub Date : 2024-01-12 , DOI: 10.1021/acssensors.3c01924
Huimin Yang 1 , Zhenming Du 1 , Yazhou Yang 1 , Qirui Wu 1 , Chaofan Ma 1 , Huiyu Su 1 , Xiaoxia Wang 1 , Dawen Zeng 1
Affiliation
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Developing gas sensors capable of efficiently detecting harmful gases is urgent to protect the human environment. Here, an active Ce–Ag bimetallic pair was innovatively introduced into SnS2, which successfully exhibited excellent NO2 gas sensing performance. 0.8% Ce–SnS2–Ag showed a gas sensing response of 5.18 to 1 ppm of NO2 at a low temperature of 80 °C, with a lower limit of detection as low as 100 ppb. DFT calculations revealed that Ce atoms are substituted into the main lattice of SnS2, which opens up the interlayer spacing and serves as an anchor point to fix the Ag atoms in the interlayer. The Ce–Ag bimetallic pairs successfully modulate the electronic structure of SnS2, which promotes the adsorption and charge transfer between NO2 and Ce–SnS2–Ag and thus achieves such an outstanding gas sensing performance. This work opens an avenue for the rational functional modification of SnS2 with an optimized electronic structure and enhanced gas sensing.
中文翻译：
二维 SnS2 中的 Ce-Ag 活性双金属对增强 NO2 传感
开发能够有效检测有害气体的气体传感器对于保护人类环境迫在眉睫。在此，创新性地将活性Ce-Ag双金属对引入SnS 2中，成功地表现出了优异的NO 2气体传感性能。 0.8% Ce–SnS 2 –Ag 在 80 °C 低温下表现出 5.18 至 1 ppm NO 2的气敏响应，检测下限低至 100 ppb。 DFT计算表明，Ce原子被替换到SnS 2的主晶格中，这打开了层间距并作为锚点将Ag原子固定在层间。 Ce-Ag双金属对成功地调节了SnS 2的电子结构，促进了NO 2和Ce-SnS 2 -Ag之间的吸附和电荷转移，从而实现了如此出色的气敏性能。这项工作为SnS 2的合理功能修饰、优化的电子结构和增强的气体传感开辟了途径。
更新日期：2024-01-12
中文翻译：
二维 SnS2 中的 Ce-Ag 活性双金属对增强 NO2 传感
开发能够有效检测有害气体的气体传感器对于保护人类环境迫在眉睫。在此，创新性地将活性Ce-Ag双金属对引入SnS 2中，成功地表现出了优异的NO 2气体传感性能。 0.8% Ce–SnS 2 –Ag 在 80 °C 低温下表现出 5.18 至 1 ppm NO 2的气敏响应，检测下限低至 100 ppb。 DFT计算表明，Ce原子被替换到SnS 2的主晶格中，这打开了层间距并作为锚点将Ag原子固定在层间。 Ce-Ag双金属对成功地调节了SnS 2的电子结构，促进了NO 2和Ce-SnS 2 -Ag之间的吸附和电荷转移，从而实现了如此出色的气敏性能。这项工作为SnS 2的合理功能修饰、优化的电子结构和增强的气体传感开辟了途径。
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