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首页> 外文期刊>Inorganic Chemistry Frontiers >Enhanced NO2 sensing performance of S-doped biomorphic SnO2 with increased active sites and charge transfer at room temperature
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Enhanced NO2 sensing performance of S-doped biomorphic SnO2 with increased active sites and charge transfer at room temperature

机译：增强了S掺杂生物晶体SnO2的NO2感测性能，随着较高的活性位点和室温电荷转移

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摘要

S-Doped biomorphic SnO2 was synthesized using biomass carbon as a template, where the biomorphic SnO2 adopts the morphology of the biomass. After the in situ growth of hexagonal or semi-hexagonal SnS2 on biomorphic SnO2, the structure of the bio-template was retained. This method is simple, eco-friendly, and cost-effective. The S-termination of SnS2 can effectively react with NO2 and thereby improve the gas sensing performance. As expected, the gas sensing performance significantly increased. The S-doped biomorphic SnO2 shows an excellent response to 100 ppm NO2 (similar to 57.38), a fast response time (similar to 1.60 s), and a low detection limit of as low as 10 ppb at room temperature (RT). The gas sensing performance exhibited strong dependence on the number of S-Sn-O chemical bonds. S-Sn-O chemical bonds can be regarded as bridges for electron transport. Chemical bonds reduced the interface state density and increased the carrier density, resulting in more chemisorbed oxygen and led to more NO2 reacting with the S-BCS-600 sensor at RT.
机译：使用生物质碳作为模板合成S-掺杂的生物晶体SnO 2，其中生物晶的SnO2采用生物质的形态。在BioMorphic SnO2上原位生长六方或半六方SNS2之后，保留了生物模板的结构。这种方法简单，环保，经济效益。 SNS2的S终端可以有效地与NO2反应，从而改善气体传感性能。正如预期的那样，气体传感性能显着增加。 S掺杂的生物晶体SnO 2显示出对100ppm No2（类似于57.38）的优异反应，快速响应时间（类似于1.60秒），并且在室温（RT）下低至10ppb的低检测限度为低至10ppb）。气体传感性能表现出对S-SN-O化学键的数量的强烈依赖。 S-SN-O化学键可以被视为电子传输的桥梁。化学键降低了界面状态密度并增加了载流子密度，从而导致更富化学吸附的氧，并使在室温下与S-BCS-600传感器的更多NO 2反应。

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