{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:12:59Z","timestamp":1760231579843,"version":"build-2065373602"},"reference-count":43,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2022,9,26]],"date-time":"2022-09-26T00:00:00Z","timestamp":1664150400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Liaoning Provincial Natural Science Foundation","award":["2020-BS-144","2021-BS-151","62103288"],"award-info":[{"award-number":["2020-BS-144","2021-BS-151","62103288"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["2020-BS-144","2021-BS-151","62103288"],"award-info":[{"award-number":["2020-BS-144","2021-BS-151","62103288"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Sensitive H2 sensors at low concentrations and room temperature are desired for the early warning and control of hydrogen leakage. In this paper, a resistive sensor based on Pt-doped In2O3 nanoparticles was fabricated using inkjet printing process. The H2 sensing performance of the sensor was evaluated at low concentrations below 1% at room temperature. It exhibited a relative high response of 42.34% to 0.6% H2. As the relative humidity of 0.5% H2 decreased from 34% to 23%, the response decreased slightly from 34% to 23%. The sensing principle and the humidity effect were discussed. A dynamic current sensing model for dry H2 detection was proposed based on Wolkenstein theory and experimentally verified to be able to predict the sensing behavior of the sensor. The H2 concentration can be calculated within a short measurement time using the model without waiting for the saturation of the response, which significantly reduces the sensing and recovery time of the sensor. The sensor is expected to be a promising candidate for room-temperature H2 detection, and the proposed model could be very helpful in promoting the application of the sensor for real-time H2 leakage monitoring.<\/jats:p>","DOI":"10.3390\/s22197306","type":"journal-article","created":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T03:30:37Z","timestamp":1664335837000},"page":"7306","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Characterization and Modeling of a Pt-In2O3 Resistive Sensor for Hydrogen Detection at Room Temperature"],"prefix":"10.3390","volume":"22","author":[{"given":"Meile","family":"Wu","sequence":"first","affiliation":[{"name":"School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China"}]},{"given":"Zebin","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China"}]},{"given":"Zhanyu","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4524-0262","authenticated-orcid":false,"given":"Peng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China"}]},{"given":"Shixin","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China"}]},{"given":"Xiaoshi","family":"Jin","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China"}]},{"given":"Meng","family":"Li","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China"}]},{"given":"Jong-Ho","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering and Inter-University Semiconductor Research Center (ISRC), Seoul National University, Seoul 08826, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"15072","DOI":"10.1016\/j.ijhydene.2019.04.068","article-title":"Hydrogen energy, economy and storage: Review and recommendation","volume":"44","author":"Abe","year":"2019","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"130334","DOI":"10.1016\/j.snb.2021.130334","article-title":"Sensitive H2 gas sensors based on SnO2 nanowires","volume":"345","author":"Lu","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6857","DOI":"10.1016\/j.ijhydene.2020.11.158","article-title":"Simulation and analysis of hydrogen leakage and explosion behaviors in various compartments on a hydrogen fuel cell ship","volume":"46","author":"Mao","year":"2021","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2404","DOI":"10.1038\/s41598-020-80875-0","article-title":"A room-temperature ultrasonic hydrogen sensor based on a sensitive layer of reduced graphene oxide","volume":"11","author":"Zhang","year":"2021","journal-title":"Sci. Rep."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"7234","DOI":"10.1016\/j.ijhydene.2019.12.152","article-title":"Low temperature and fast response hydrogen gas sensor with Pd coated SnO2 nanofiber rods","volume":"45","author":"Wang","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"128930","DOI":"10.1016\/j.snb.2020.128930","article-title":"Electrostatic spray deposition of chemochromic WO3-Pd sensor for hydrogen leakage detection at room temperature","volume":"327","author":"Lee","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Lee, J.-H., Kim, J.-H., Kim, J.-Y., Mirzaei, A., Kim, H.W., and Kim, S.S. (2019). ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors. Sensors, 19.","DOI":"10.3390\/s19030726"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"130035","DOI":"10.1016\/j.snb.2021.130035","article-title":"Mesoporous WO3-TiO2 heterojunction for a hydrogen gas sensor","volume":"341","author":"Li","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"12968","DOI":"10.1039\/D0TA03552A","article-title":"Superfast and efficient hydrogen gas sensor using PdAu alloy @ZnO core\u2013shell nanoparticles","volume":"8","author":"Le","year":"2020","journal-title":"J. Mater. Chem. A"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"15120","DOI":"10.1016\/j.ijhydene.2022.03.005","article-title":"Understanding on the hydrogen detection of plasma sprayed tin oxide\/tungsten oxide (SnO2\/WO3) sensor","volume":"47","author":"Ambardekar","year":"2022","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.apsusc.2018.12.274","article-title":"H2 gas sensor based on PdOx-doped In2O3 nanoparticles synthesized by flame spray pyrolysis","volume":"475","author":"Inyawilert","year":"2019","journal-title":"Appl. Surf. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1002","DOI":"10.1186\/s11671-015-1002-4","article-title":"In2O3 nanotower hydrogen gas sensors based on both schottky junction and thermoelectronic emission","volume":"10","author":"Zheng","year":"2015","journal-title":"Nanoscale Res. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"124","DOI":"10.1016\/j.snb.2017.10.139","article-title":"Highly sensitive and ultra-fast gas sensor based on CeO2-loaded In2O3 hollow spheres for ppb-level hydrogen detection","volume":"257","author":"Hu","year":"2018","journal-title":"Sens. Actuators B"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1016\/j.snb.2019.02.096","article-title":"Selective gas sensor based on one single SnO2 nanowire","volume":"288","author":"Tonezzer","year":"2019","journal-title":"Sens. Actuators B"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"793","DOI":"10.1016\/j.snb.2018.12.097","article-title":"One-step electrospun SnO2\/MOx heterostructured nanomaterials for highly selective gas sensor array integration","volume":"283","author":"Song","year":"2019","journal-title":"Sens. Actuators B"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"26388","DOI":"10.1016\/j.ijhydene.2019.04.269","article-title":"Efficient H2 gas sensor based on 2D SnO2 disks: Experimental and theoretical studies","volume":"45","author":"Umar","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2041","DOI":"10.1016\/j.cclet.2020.04.033","article-title":"Highly sensitive acetone gas sensor based on ultra-low content bimetallic PtCu modified WO3\u00b7H2O hollow sphere","volume":"31","author":"Deng","year":"2020","journal-title":"Chin. Chem. Lett."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1166\/jnn.2019.15787","article-title":"Size-dependent H2 sensing over supported Pt nanoparticles","volume":"19","author":"Mohl","year":"2019","journal-title":"J. Nanosci. Nanotechnol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2418","DOI":"10.1016\/j.ijhydene.2019.11.072","article-title":"Effective monitoring and classification of hydrogen and ammonia gases with a bilayer Pt\/SnO2 thin film sensor","volume":"45","author":"Thai","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"152086","DOI":"10.1016\/j.jallcom.2019.152086","article-title":"Hydrogen sensors based on Pt-decorated SnO2 nanorods with fast and sensitive room-temperature sensing performance","volume":"811","author":"Chen","year":"2019","journal-title":"J. Alloys Compd."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/j.jcis.2021.03.107","article-title":"Pd nanocrystal sensitization two-dimension porous TiO2 for instantaneous and high efficient H2 detection","volume":"597","author":"Wang","year":"2021","journal-title":"J. Colloid Interface Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1016\/j.snb.2014.05.013","article-title":"Room-temperature hydrogen sensor based on grain-boundary controlled Pt decorated In2O3 nanocubes","volume":"201","author":"Wang","year":"2014","journal-title":"Sens. Actuators B"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"6032","DOI":"10.1039\/b510832b","article-title":"A highly sensitive oxygen sensor operating at room temperature based on platinum-doped In2O3 nanocrystals","volume":"48","author":"Neri","year":"2005","journal-title":"Chem. Commun."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"2000004","DOI":"10.1002\/pssa.202000004","article-title":"Controlled growth of vertically oriented trilayer MoS2 nanoflakes for room-temperature NO2 gas sensor applications","volume":"217","author":"Hung","year":"2020","journal-title":"Phys. Status Solidi A"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1038\/s41378-022-00398-8","article-title":"Ultralow detection limit and ultrafast response\/recovery of the H2 gas sensor based on Pd-doped rGO\/ZnO-SnO2 from hydrothermal synthesis","volume":"8","author":"Zhang","year":"2022","journal-title":"Microsyst. Nanoeng."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1530","DOI":"10.1039\/D0MA00880J","article-title":"Advanced development of metal oxide nanomaterials for H2 gas sensing applications","volume":"2","author":"Shi","year":"2021","journal-title":"Mater. Adv."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Wang, B., Sun, L., Schneider-Ramelow, M., Lang, K.-D., and Ngo, H.-D. (2021). Recent advances and challenges of nanomaterials-based hydrogen sensors. Micromachines, 12.","DOI":"10.3390\/mi12111429"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.renene.2018.05.033","article-title":"High-sensitivity and fast-response hydrogen sensor for safety application using Pt nanoparticle-decorated 3D graphene","volume":"144","author":"Phan","year":"2019","journal-title":"Renew. Energy"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"616","DOI":"10.1016\/j.apsusc.2018.09.128","article-title":"A novel approach to fabricating a ternary rGO\/ZnO\/Pt system for high-performance hydrogen sensor at low operating temperatures","volume":"464","author":"Drmosh","year":"2019","journal-title":"Appl. Surf. Sci."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Wang, W., Liu, X., Mei, S., Liu, M., Lu, C., and Lu, M. (2019). Development of a high stability Pd-Ni alloy thin-film coated saw device for sensing hydrogen. Sensors, 19.","DOI":"10.3390\/s19163560"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"21074","DOI":"10.1039\/C9NR07834G","article-title":"Palladium\/cobalt nanowires with improved hydrogen sensing stability at ultra-low temperatures","volume":"11","author":"Du","year":"2019","journal-title":"Nanoscale"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1016\/j.materresbull.2018.09.033","article-title":"A non-oxygen adsorption mechanism for hydrogen detection of nanostructured SnO2 based sensors","volume":"109","author":"Zhu","year":"2019","journal-title":"Mater. Res. Bull."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"628","DOI":"10.1016\/j.snb.2018.12.120","article-title":"Combination of Pd loading and electron beam irradiation for superior hydrogen sensing of electrospun ZnO nanofibers","volume":"284","author":"Kim","year":"2019","journal-title":"Sens. Actuators B"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1016\/j.jallcom.2019.07.081","article-title":"A highly sensitivity and selectivity Pt-SnO2 nanoparticles for sensing applications at extremely low level hydrogen gas detection","volume":"805","author":"Yin","year":"2019","journal-title":"J. Alloys Compd."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1201","DOI":"10.1021\/acssensors.2c00334","article-title":"Anchoring Platinum Clusters onto Oxygen Vacancy-Modified In2O3 for Ultraefficient, Low-Temperature, Highly Sensitive, and Stable Detection of Formaldehyde","volume":"7","author":"Ou","year":"2022","journal-title":"ACS Sens."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Hwang, J., Jung, H., Shin, H.-S., Kim, D.-S., Kim, D.S., Ju, B.-K., and Chun, M. (2021). The Effect of Noble Metals on Co Gas Sensing Properties of In2O3 Nanoparticles. Appl. Sci., 11.","DOI":"10.3390\/app11114903"},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Marikutsa, A., Rumyantseva, M., Konstantinova, E.A., and Gaskov, A. (2021). The Key Role of Active Sites in the Development of Selective Metal Oxide Sensor Materials. Sensors, 21.","DOI":"10.3390\/s21072554"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1007\/s10832-009-9583-x","article-title":"Modeling of sensing and transduction for p-type semiconducting metal oxide based gas sensors","volume":"25","author":"Barsan","year":"2010","journal-title":"J. Electroceram."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1023\/A:1014405811371","article-title":"Conduction model of metal oxide gas sensors","volume":"7","author":"Barsan","year":"2001","journal-title":"J. Electroceram."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"913","DOI":"10.1021\/acssensors.6b00323","article-title":"Antimony-doped tin dioxide gas sensors exhibiting high stability in the sensitivity to humidity changes","volume":"1","author":"Suematsu","year":"2016","journal-title":"ACS Sens."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"340","DOI":"10.1016\/j.snb.2013.01.018","article-title":"Modeling of a p-type resistive gas sensor in the presence of a reducing gas","volume":"181","author":"Bejaoui","year":"2013","journal-title":"Sens. Actuators B"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"128363","DOI":"10.1016\/j.snb.2020.128363","article-title":"Highly selective and ultra-low power consumption metal oxide based hydrogen gas sensor employing graphene oxide as molecular sieve","volume":"320","author":"Rasch","year":"2020","journal-title":"Sens. Actuators B"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"156170","DOI":"10.1016\/j.jallcom.2020.156170","article-title":"Sedum lineare flower-like ordered mesoporous In2O3\/ZnO gas sensing materials with high sensitive response to H2S at room temperature prepared by self-assembled of 2D nanosheets","volume":"844","author":"Sun","year":"2020","journal-title":"J. Alloys Compd."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/19\/7306\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:40:01Z","timestamp":1760143201000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/19\/7306"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,26]]},"references-count":43,"journal-issue":{"issue":"19","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["s22197306"],"URL":"https:\/\/doi.org\/10.3390\/s22197306","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2022,9,26]]}}}