{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T07:19:40Z","timestamp":1779175180686,"version":"3.51.4"},"reference-count":54,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2019,10,20]],"date-time":"2019-10-20T00:00:00Z","timestamp":1571529600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003741","name":"Instituci\u00f3 Catalana de Recerca i Estudis Avan\u00e7ats","doi-asserted-by":"publisher","award":["ICREA ACad\u00e8mia 2018"],"award-info":[{"award-number":["ICREA ACad\u00e8mia 2018"]}],"id":[{"id":"10.13039\/501100003741","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004837","name":"Ministerio de Ciencia e Innovaci\u00f3n","doi-asserted-by":"publisher","award":["RTI2018-101580-B-I00"],"award-info":[{"award-number":["RTI2018-101580-B-I00"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004837","name":"Ministerio de Ciencia e Innovaci\u00f3n","doi-asserted-by":"publisher","award":["PGC2018-099744-B-I00"],"award-info":[{"award-number":["PGC2018-099744-B-I00"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010198","name":"Ministerio de Econom\u00eda, Industria y Competitividad, Gobierno de Espa\u00f1a","doi-asserted-by":"publisher","award":["SEV-2016-0683"],"award-info":[{"award-number":["SEV-2016-0683"]}],"id":[{"id":"10.13039\/501100010198","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Ag\u00e8ncia de Gesti\u00f3 d\u2019Ajuts Universitaris i de Recerca","award":["2017SGR 418"],"award-info":[{"award-number":["2017SGR 418"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper explores the gas sensing properties of graphene nanolayers decorated with lead halide perovskite (CH3NH3PbBr3) nanocrystals to detect toxic gases such as ammonia (NH3) and nitrogen dioxide (NO2). A chemical-sensitive semiconductor film based on graphene has been achieved, being decorated with CH3NH3PbBr3 perovskite (MAPbBr3) nanocrystals (NCs) synthesized, and characterized by several techniques, such as field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Reversible responses were obtained towards NO2 and NH3 at room temperature, demonstrating an enhanced sensitivity when the graphene is decorated by MAPbBr3 NCs. Furthermore, the effect of ambient moisture was extensively studied, showing that the use of perovskite NCs in gas sensors can become a promising alternative to other gas sensitive materials, due to the protective character of graphene, resulting from its high hydrophobicity. Besides, a gas sensing mechanism is proposed to understand the effects of MAPbBr3 sensing properties.<\/jats:p>","DOI":"10.3390\/s19204563","type":"journal-article","created":{"date-parts":[[2019,10,21]],"date-time":"2019-10-21T03:40:29Z","timestamp":1571629229000},"page":"4563","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":50,"title":["Gas Sensing Properties of Perovskite Decorated Graphene at Room Temperature"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3508-3462","authenticated-orcid":false,"given":"Juan","family":"Casanova-Ch\u00e1fer","sequence":"first","affiliation":[{"name":"MINOS-EMaS, Universitat Rovira i Virgili, 43007 Tarragona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roc\u00edo","family":"Garc\u00eda-Aboal","sequence":"additional","affiliation":[{"name":"Instituto de Tecnolog\u00eda Qu\u00edmica, CSIC-UPV, Universitat Polite\u0300cnica de Vale\u0300ncia, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0356-021X","authenticated-orcid":false,"given":"Pedro","family":"Atienzar","sequence":"additional","affiliation":[{"name":"Instituto de Tecnolog\u00eda Qu\u00edmica, CSIC-UPV, Universitat Polite\u0300cnica de Vale\u0300ncia, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6164-4342","authenticated-orcid":false,"given":"Eduard","family":"Llobet","sequence":"additional","affiliation":[{"name":"MINOS-EMaS, Universitat Rovira i Virgili, 43007 Tarragona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,10,20]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2019, March 12). 7 Million Premature Deaths Annually Linked to Air Pollution. Available online: https:\/\/www.who.int\/mediacentre\/news\/releases\/2014\/air-pollution\/en\/."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"9875","DOI":"10.1073\/pnas.170278997","article-title":"Global warming in the Twenty-First century: An alternative scenario","volume":"97","author":"Hansen","year":"2000","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"174","DOI":"10.1002\/smll.201002232","article-title":"Chemiresistive Sensing with Chemically Modified Metal and Alloy Nanoparticles","volume":"8","author":"Zamborini","year":"2012","journal-title":"Small"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"15119","DOI":"10.1016\/j.ceramint.2016.06.145","article-title":"Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review","volume":"42","author":"Mirzaei","year":"2016","journal-title":"Ceram. Int."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Zaidi, N.A., Tahir, M.W., Vellekoop, M.J., Lang, W., Zaidi, N.A., Tahir, M.W., Vellekoop, M.J., and Lang, W. (2017). A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas. Sensors, 17.","DOI":"10.3390\/s17102283"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.trac.2015.02.008","article-title":"Graphene-Based hybrids for chemiresistive gas sensors","volume":"68","author":"Meng","year":"2015","journal-title":"TrAC Trends Anal. Chem."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"250","DOI":"10.1016\/j.snb.2014.07.074","article-title":"Nanoscale metal Oxide-Based heterojunctions for gas sensing: A review","volume":"204","author":"Miller","year":"2014","journal-title":"Sens. Actuators B Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1007\/s00604-006-0623-9","article-title":"Data analysis for electronic nose systems","volume":"156","author":"Scott","year":"2006","journal-title":"Microchim. Acta"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3721","DOI":"10.1039\/c3cc38950b","article-title":"The chemistry of pristine graphene","volume":"49","author":"Herranz","year":"2013","journal-title":"Chem. Commun."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"10683","DOI":"10.1021\/jp3085759","article-title":"Graphene Oxide as a Practical Solution to High Sensitivity Gas Sensing","volume":"117","author":"Prezioso","year":"2013","journal-title":"J. Phys. Chem. C"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"5426","DOI":"10.1039\/c3nr00747b","article-title":"Highly selective gas sensor arrays based on thermally reduced graphene oxide","volume":"5","author":"Lipatov","year":"2013","journal-title":"Nanoscale"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1016\/j.snb.2015.04.062","article-title":"Recent advances in graphene based gas sensors","volume":"218","author":"Varghese","year":"2015","journal-title":"Sens. Actuators B Chem."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Rodner, M., Puglisi, D., Ekeroth, S., Helmersson, U., Shtepliuk, I., Yakimova, R., Skallberg, A., Uvdal, K., Sch\u00fctze, A., and Eriksson, J. (2019). Graphene Decorated with Iron Oxide Nanoparticles for Highly Sensitive Interaction with Volatile Organic Compounds. Sensors, 19.","DOI":"10.3390\/s19040918"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"382","DOI":"10.1039\/b9nr00015a","article-title":"Nanostructured Pt decorated graphene and multi walled carbon nanotube based room temperature hydrogen gas sensor","volume":"1","author":"Kaniyoor","year":"2009","journal-title":"Nanoscale"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2971","DOI":"10.1016\/j.orgel.2014.08.044","article-title":"Low-Cost and flexible printed graphene\u2013PEDOT: PSS gas sensor for ammonia detection","volume":"15","author":"Seekaew","year":"2014","journal-title":"Org. Electron."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"11991","DOI":"10.1039\/C8RA01184B","article-title":"Highly sensitive and wearable gas sensors consisting of chemically functionalized graphene oxide assembled on cotton yarn","volume":"8","author":"Kang","year":"2018","journal-title":"RSC Adv."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"5469","DOI":"10.3390\/s100605469","article-title":"Metal oxide Semi-Conductor gas sensors in environmental monitoring","volume":"10","author":"Fine","year":"2010","journal-title":"Sensors"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"2832","DOI":"10.3762\/bjnano.9.264","article-title":"Graphene-Enhanced metal oxide gas sensors at room temperature: A review","volume":"9","author":"Sun","year":"2018","journal-title":"Beilstein J. Nanotechnol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1016\/j.snb.2012.11.014","article-title":"Gas sensors using carbon nanomaterials: A review","volume":"179","author":"Llobet","year":"2013","journal-title":"Sens. Actuators B"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"710","DOI":"10.1039\/C6EE03397K","article-title":"The rapid evolution of highly efficient perovskite solar cells","volume":"10","author":"Abate","year":"2017","journal-title":"Energy Environ. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"399","DOI":"10.1039\/C3EE43161D","article-title":"The origin of high efficiency in Low-Temperature Solution-Processable bilayer organometal halide hybrid solar cells","volume":"7","author":"Sun","year":"2014","journal-title":"Energy Environ. Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"9604","DOI":"10.1039\/C8TA03501F","article-title":"Photodecomposition and thermal decomposition in methylammonium halide lead perovskites and inferred design principles to increase photovoltaic device stability","volume":"6","author":"Ono","year":"2018","journal-title":"J. Mater. Chem. A"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1702571","DOI":"10.1002\/smll.201702571","article-title":"Superior Self-Powered Room-Temperature Chemical Sensing with Light-Activated Inorganic Halides Perovskites","volume":"14","author":"Chen","year":"2018","journal-title":"Small"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1021\/acssensors.7b00761","article-title":"Solution Processed CH3NH3PbI3-xClx Perovskite Based Self-Powered Ozone Sensing Element Operated at Room Temperature","volume":"3","author":"Kakavelakis","year":"2018","journal-title":"ACS Sens."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"15426","DOI":"10.1039\/C5CC06060E","article-title":"A resistance change effect in perovskite CH3NH3PbI3 films induced by ammonia","volume":"51","author":"Bao","year":"2015","journal-title":"Chem. Commun."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"12876","DOI":"10.1039\/C7CP01646H","article-title":"High-Performance gas sensors based on a thiocyanate ion-doped organometal halide perovskite","volume":"19","author":"Zhuang","year":"2017","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1702469","DOI":"10.1002\/adma.201702469","article-title":"Reversible, Fast, and Wide-Range Oxygen Sensor Based on Nanostructured Organometal Halide Perovskite","volume":"29","author":"Orgiu","year":"2017","journal-title":"Adv. Mater."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"270","DOI":"10.1016\/j.jpcs.2019.01.020","article-title":"High-Performance Room-Temperature NO2 sensors based on CH3NH3PbBr3 semiconducting films: Effect of surface capping by alkyl chain on sensor performance","volume":"129","author":"Zhu","year":"2019","journal-title":"J. Phys. Chem. Solids"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"6185","DOI":"10.1039\/C5TA09911K","article-title":"Graphene in perovskite solar cells: Device design, characterization and implementation","volume":"4","author":"Acik","year":"2016","journal-title":"J. Mater. Chem. A"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1530","DOI":"10.1021\/ja511132a","article-title":"Transformation of the excited state and photovoltaic efficiency of CH3NH3PbI3 perovskite upon controlled exposure to humidified air","volume":"137","author":"Christians","year":"2015","journal-title":"J. Am. Chem. Soc."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"3397","DOI":"10.1021\/acs.chemmater.5b00660","article-title":"Reversible Hydration of CH3NH3PbI3 in Films, Single Crystals, and Solar Cells","volume":"27","author":"Leguy","year":"2015","journal-title":"Chem. Mater."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"684","DOI":"10.1021\/acs.nanolett.8b03685","article-title":"Graphene-Induced Improvements of Perovskite Solar Cell Stability: Effects on Hot-Carriers","volume":"19","author":"Catone","year":"2019","journal-title":"Nano Lett."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1039\/C5EE02733K","article-title":"Organometal halide perovskite solar cells: Degradation and stability","volume":"9","author":"Berhe","year":"2016","journal-title":"Energy Environ. Sci."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1902489","DOI":"10.1002\/adfm.201902489","article-title":"Nitrogen-Dopant-Induced Organic\u2013Inorganic Hybrid Perovskite Crystal Growth on Carbon Nanotubes","volume":"29","author":"Lee","year":"2019","journal-title":"Adv. Funct. Mater."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"390","DOI":"10.1039\/C7RA11149E","article-title":"A CH3NH3PbI3 film for a Room-Temperature NO2 gas sensor with quick response and high selectivity","volume":"8","author":"Fu","year":"2018","journal-title":"RSC Adv."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1016\/j.orgel.2018.04.015","article-title":"A new inorganic-organic hybrid halide perovskite thin film based ammonia sensor","volume":"58","author":"Gupta","year":"2018","journal-title":"Org. Electron."},{"key":"ref_37","unstructured":"European Union (2019, October 12). Air Quality Standards. Available online: https:\/\/ec.europa.eu\/environment\/air\/quality\/standards.htm."},{"key":"ref_38","unstructured":"Environmental Protection Agency (2019, October 12). NAAQS Table, Available online: https:\/\/www.epa.gov\/criteria-air-pollutants\/naaqs-table."},{"key":"ref_39","unstructured":"European Union (2019, October 12). Commission Directive 2000\/39\/EC. Available online: https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/HTML\/?uri=CELEX:02000L0039-20100108&from=EN."},{"key":"ref_40","unstructured":"Centers for Disease Control and Prevention (2019, October 12). Ammonia, Available online: https:\/\/www.cdc.gov\/niosh\/npg\/npgd0028.html."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"850","DOI":"10.1021\/ja4109209","article-title":"Nontemplate Synthesis of CH3NH3PbBr3 Perovskite Nanoparticles","volume":"136","author":"Schmidt","year":"2014","journal-title":"J. Am. Chem. Soc."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"31861","DOI":"10.1039\/C5RA03551A","article-title":"Energy and dose dependence of Proton-Irradiation damage in graphene","volume":"5","author":"Yang","year":"2015","journal-title":"RSC Adv."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"768","DOI":"10.1016\/j.carbon.2018.07.032","article-title":"Channelling and induced defects at ion-bombarded aligned multiwall carbon nanotubes","volume":"139","author":"Ripanti","year":"2018","journal-title":"Carbon"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"2883","DOI":"10.1016\/j.jiec.2013.11.022","article-title":"Facile and safe graphene preparation on solution based platform","volume":"20","author":"Johra","year":"2014","journal-title":"J. Ind. Eng. Chem."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"22160","DOI":"10.1039\/C6CP02033J","article-title":"A comparative study on defect estimation using XPS and Raman spectroscopy in few layer nanographitic structures","volume":"18","author":"Ganesan","year":"2016","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"3961","DOI":"10.1039\/c3ta14528j","article-title":"Specific functionalization and polymer grafting on multiwalled carbon nanotubes to fabricate advanced nylon 12 composites","volume":"2","author":"Roy","year":"2014","journal-title":"J. Mater. Chem. A"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"833","DOI":"10.1016\/j.carbon.2008.02.012","article-title":"Chemical oxidation of multiwalled carbon nanotubes","volume":"46","author":"Datsyuk","year":"2008","journal-title":"Carbon"},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1638","DOI":"10.1021\/nn305507p","article-title":"The Impact of Functionalization on the Stability, Work Function, and Photoluminescence of Reduced Graphene Oxide","volume":"7","author":"Kumar","year":"2013","journal-title":"ACS Nano"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1297","DOI":"10.1039\/C3EE42963F","article-title":"Graphene oxide derivatives as Hole- and Electron-Extraction layers for High-Performance polymer solar cells","volume":"7","author":"Liu","year":"2014","journal-title":"Energy Environ. Sci."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"6156","DOI":"10.1021\/cr3000412","article-title":"Functionalization of Graphene: Covalent and Non-Covalent Approaches, Derivatives and Applications","volume":"112","author":"Georgakilas","year":"2012","journal-title":"Chem. Rev."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1389","DOI":"10.1002\/adom.201500150","article-title":"Hybrid Graphene-Perovskite Phototransistors with Ultrahigh Responsivity and Gain","volume":"3","author":"Wang","year":"2015","journal-title":"Adv. Opt. Mater."},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Lv, C., Hu, C., Luo, J., Liu, S., Qiao, Y., Zhang, Z., Song, J., Shi, Y., Cai, J., and Watanabe, A. (2019). Recent Advances in Graphene-Based Humidity Sensors. Nanomater, 9.","DOI":"10.3390\/nano9030422"},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Casanova-Ch\u00e1fer, J., Navarrete, E., Noirfalise, X., Umek, P., Bittencourt, C., and Llobet, E. (2019). Gas Sensing with Iridium Oxide Nanoparticle Decorated Carbon Nanotubes. Sensors, 19.","DOI":"10.3390\/s19010113"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"e1600534","DOI":"10.1126\/sciadv.1600534","article-title":"Ultrahigh sensitivity of methylammonium lead tribromide perovskite single crystals to environmental gases","volume":"2","author":"Fang","year":"2016","journal-title":"Sci. Adv."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/20\/4563\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:28:01Z","timestamp":1760189281000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/20\/4563"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,10,20]]},"references-count":54,"journal-issue":{"issue":"20","published-online":{"date-parts":[[2019,10]]}},"alternative-id":["s19204563"],"URL":"https:\/\/doi.org\/10.3390\/s19204563","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,10,20]]}}}