폴리머 용액법에 의한 In2O3 첨가 나노 WO3 분말 합성 및 NO2 가스 센서 특성

김동민; 이상진; Dong Min Kim; Sang-Jin Lee

Korean Journal of Materials Research, Vol.28, No.1, 12-17, January, 2018

DOI10.3740/MRSK.2018.28.1.12 Export Citation

폴리머 용액법에 의한 In2O3 첨가 나노 WO3 분말 합성 및 NO2 가스 센서 특성

NO2 Gas Sensing Properties of Nano-Sized In2O3 Doped WO3 Powders Prepared from Polymer Solution Route

김동민¹, 이상진^{1, 2, †}

¹국립목포대학교 신소재공학과
²국립목포대학교 세라믹산업기술연구소

Dong Min Kim¹, and Sang-Jin Lee^{1, 2, †}

¹Department of Advanced Materials Science and Engineering, Mokpo National University, Muan 58554, Republic of Korea
²Research Institute of Ceramic Industry and Technology, Mokpo National University, Muan 58554, Republic of Korea

E-mail:

In2O3 doped WO3 powders were prepared by a polymer solution route and their NO2 gas sensing properties were analyzed. The synthesized powders showed nano-sized particles with specific surface areas of 6.01~21.5 m2/g and the particle size and shape changed according to the content of In2O3. The gas sensors fabricated with the synthesized powders were tested at operating temperatures of 400~500 °C and 100~500 ppm concentrations of NO2 atmosphere. The particle size and In2O3 content affected on the initial sensor resistance in an air atmosphere. The highest sensitivity (8.57 at 500 °C), which was 1.77 higher than the sensor consisting of the pure WO3 sample, was measured in the 0.5 mol% In2O3 doping sample. In addition, the response time and recovery time were improved by the addition of In2O3.

Keywords:WO3;In2O3;polymer solution route;nano-powder;NO2 gas sensor

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[1] Long H, Zeng W, Zhang H, J. Mater. Sci. -Mater. Electron, 26, 4698 (2015)

[2] Chen D, Hou X, Li T, Yin L, Fan B, Wang H, Li X, Xu H, Lu H, Zhang R, Sun J, Sens. Actuators B-Chem., 153, 373 (2011)

[3] Kumar R, Al-Dossary O, Kumar G, Umar A, Nano-Micro. Lett., 7, 97 (2015)

[4] Hyodo T, Nishida N, Shimizu Y, Egashira M, Sens. Actuators B-Chem., 83, 209 (2002)

[5] Choi JK, Cho PS, Lee JH, Korean J. Mater. Res., 18(4), 193 (2008)

[6] Ivanovskaya M, Gurlo A, Bogdanov P, Sens. Actuators B-Chem., 77, 264 (2001)

[7] Yamaura H, Jinkawa T, Tamaki J, Moriya K, Miura N, Yamazoe N, Sens. Actuators B-Chem., 36, 325 (1996)

[8] Hussain CM, Kharisov B, Application of Nanomaterials, p 48-75., Royal Society of Chemistry, English (2016).

[9] Eranna G, Joshi BC, Runthala DP, Gupta RP, Crit. Rev. Solid State Mat. Sci., 29, 111 (2004)

[10] Kim HJ, Lee JH, Sens. Actuators B-Chem., 192, 607 (2014)

[11] Pantilimon MC, Kang TS, Lee SJ, Sci. Adv. Mater., 9, 280 (2017)

[12] Richard AP, Edwards DD, J. Solid State Chem., 177, 2740 (2004)

[13] Feng C, Li X, Ma J, Sun Y, Wang C, Sun P, Zheng J, Lu G, Sens. Actuators B-Chem., 290, 622 (2015)

[14] Yin L, Chen D, Hu M, Shi H, Yang D, Fan B, Shao G, Zhang R, Shao G, J. Mater. Chem., 2, 18867 (2014)

[15] Xue XY, Chen ZH, Ma CH, Xing LL, Chen YJ, Wang YG, Wang TH, J. Phys. Chem., 114, 3968 (2010)

[16] Ju S, Ishikawa F, Chen P, Chang HK, Zhou C, Ha Y, Liu J, Antonio F, Marks TJ, Janes DB, Appl. Phys. Lett., 92, 222105 (2008)

[17] Sharma A, Tomar M, Gupta V, Sens. Actuators B-Chem., 17, 675 (2013)

[18] Deng J, Yu B, Lou Z, Wang L, Wang R, Zhang T, Sens. Actuators B-Chem., 184, 21 (2013)