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您的检索式：作者名="Zongchang Luo"
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| 1 | Cu-doped SnO_(2)/rGO nanocomposites for ultrasensitive H2S detection at low temperature显示文摘Hydrogen sulfide(H_(2)S)detection remains a significant concern and the sensitivity,selectivity,and detection limit must be balanced at low temperatures.Herein,we utilized a facile solvothermal method to prepare Cu-doped SnO_(2)/rGO nanocomposites that have emerged as promising candidate materials for H_(2)S sensors.Characterization of the Cu-SnO_(2)/rGO was carried out to determine its surface morphology,chemical composition,and crystal defects.The optimal sensor response for 10 ppm H_(2)S was~1415.7 at 120℃,which was over 320 times higher than that seen for pristine SnO_(2)CQDs(R_(a)/R_(g)=4.4)at 280℃.Moreover,the sensor material exhibited excellent selectivity,a superior linear working range(R^(2)=0.991,1-150 ppm),a fast response time(31 s to 2 ppm),and ppb-level H_(2)S detection(R_(a)/R_(g)=1.26 to 50 ppb)at 120℃.In addition,the sensor maintained a high performance even at extremely high humidity(90%)and showed outstanding long-term stability.These superb H_(2)S sensing properties were attributed to catalytic sensitization by the Cu dopant and a synergistic effect of the Cu-SnO_(2)and rGO,which offered abundant active sites for O_(2)and H_(2)S absorption and accelerated the transfer of electrons/holes. | Tingting Chen Jianhai Sun Ning Xue Wen Wang Zongchang Luo Qinqin Liang Tianye Zhou Hao Quan Haoyuan Cai Kangsong Tang Kaisheng Jiang | 2023 | Microsystems & Nanoengineering2023，9，3： | 0 |
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