{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T23:49:26Z","timestamp":1790725766170,"version":"4.1.0"},"reference-count":50,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,5,22]],"date-time":"2021-05-22T00:00:00Z","timestamp":1621641600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2019R1D1A3A03103662"],"award-info":[{"award-number":["2019R1D1A3A03103662"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Micromachines"],"abstract":"<jats:p>This study reports the ZnS quantum dots (QDs) synthesis by a hot-injection method for acetone gas sensing applications. The prepared ZnS QDs were characterized by X-ray diffraction (XRD) and transmission electron microscopy analysis. The XRD result confirms the successful formation of the wurtzite phase of ZnS, with a size of ~5 nm. Transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and fast Fourier transform (FFT) images reveal the synthesis of agglomerated ZnS QDs with different sizes, with lattice spacing (0.31 nm) corresponding to (111) lattice plane. The ZnS QDs sensor reveals a high sensitivity (92.4%) and fast response and recovery time (5.5 s and 6.7 s, respectively) for 100 ppm acetone at 175 \u00b0C. In addition, the ZnS QDs sensor elucidates high acetone selectivity of 91.1% as compared with other intrusive gases such as ammonia (16.0%), toluene (21.1%), ethanol (26.3%), butanol (11.2%), formaldehyde (9.6%), isopropanol (22.3%), and benzene (18.7%) for 100 ppm acetone concentration at 175 \u00b0C. Furthermore, it depicts outstanding stability (89.1%) during thirty days, with five day intervals, for 100 ppm at an operating temperature of 175 \u00b0C. In addition, the ZnS QDs acetone sensor elucidates a theoretical detection limit of ~1.2 ppm at 175 \u00b0C. Therefore, ZnS QDs can be a promising and quick traceable sensor nanomaterial for acetone sensing applications.<\/jats:p>","DOI":"10.3390\/mi12060598","type":"journal-article","created":{"date-parts":[[2021,5,24]],"date-time":"2021-05-24T00:01:20Z","timestamp":1621814480000},"page":"598","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["ZnS Quantum Dot Based Acetone Sensor for Monitoring Health-Hazardous Gases in Indoor\/Outdoor Environment"],"prefix":"10.3390","volume":"12","author":[{"given":"Rajneesh Kumar","family":"Mishra","sequence":"first","affiliation":[{"name":"Department of Physics, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gyu-Jin","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Physics, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyeon-Jong","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Physics, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin-Seog","family":"Gwag","sequence":"additional","affiliation":[{"name":"Department of Physics, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"30263051","DOI":"10.1039\/D0TC04196C","article-title":"Recent progress in intrinsic and stimulated room-temperature gas sensors enabled by low-dimensional materials","volume":"9","author":"Cheng","year":"2021","journal-title":"J. Mater. Chem. C"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"127237","DOI":"10.1016\/j.snb.2019.127237","article-title":"Highly sensitive and selective electronic sensor based on Co catalyzed SnO2 nanospheres for acetone detection","volume":"304","author":"Xu","year":"2020","journal-title":"Sens. Actuators B"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1016\/j.envpol.2007.06.012","article-title":"Human health effects of air pollution","volume":"151","author":"Kampa","year":"2008","journal-title":"Environ. Pollut."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"125757","DOI":"10.1016\/j.jhazmat.2021.125757","article-title":"Plasma-induced oxygen vacancies enabled ultrathin ZnO films for highly sensitive detection of trimethylamine","volume":"415","author":"Li","year":"2021","journal-title":"J. Hazard. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"7353","DOI":"10.1016\/j.ceramint.2020.11.187","article-title":"Light-activated room-temperature gas sensors based on metal oxide nanostructures: A review on recent advances","volume":"47","author":"Wang","year":"2021","journal-title":"Ceram. Int."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"20704","DOI":"10.1021\/acsami.0c04398","article-title":"Oxygen Vacancies Enabled Porous SnO2 Thin Films for Highly Sensitive Detection of Triethylamine at Room Temperature","volume":"12","author":"Xu","year":"2020","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"470","DOI":"10.1039\/C8MH01365A","article-title":"Advances in designs and mechanisms of semiconducting metal oxide nanostructures for high-precision gas sensors operated at room temperature","volume":"6","author":"Li","year":"2019","journal-title":"Mater. Horiz."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"129926","DOI":"10.1016\/j.snb.2021.129926","article-title":"In-situ generated TiO2\/\u03b1-Fe2O3 heterojunction arrays for batch manufacturing of conductometric acetone gas sensors","volume":"340","author":"Wang","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1033","DOI":"10.1039\/C5TA08336B","article-title":"Ordered mesoporous Ag-doped TiO2\/SnO2 nanocomposite based highly sensitive and selective VOC sensors","volume":"4","author":"Tomer","year":"2016","journal-title":"J. Mater. Chem. A"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/j.resp.2014.10.001","article-title":"Volatile organic compounds (VOCs) fingerprint of Alzheimer\u2019s disease","volume":"209","author":"Mazzatenta","year":"2015","journal-title":"Respir. Physiol. Neurobiol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2327","DOI":"10.1002\/oby.21242","article-title":"Measuring breath acetone for monitoring fat loss: Review","volume":"23","author":"Anderson","year":"2015","journal-title":"Obesity"},{"key":"ref_12","first-page":"2155","article-title":"Continuous monitoring of breath acetone, blood glucose and blood ketone in 20 type 1 diabetic outpatients over 30 days","volume":"8","author":"Sun","year":"2017","journal-title":"J. Anal. Bioanal. Tech."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"046011","DOI":"10.1088\/1752-7155\/5\/4\/046011","article-title":"Measurement of breath acetone concentrations by selected ion flow tube mass spectrometry in type 2 Diabetes","volume":"5","author":"Storer","year":"2011","journal-title":"J. Breath Res."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"127616","DOI":"10.1016\/j.snb.2019.127616","article-title":"Highly sensitive and selective detection of acetone based on platinum sensitized porous tungsten oxide nanospheres","volume":"307","author":"Xu","year":"2020","journal-title":"Sens. Actuators B"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2357","DOI":"10.1002\/adfm.201202729","article-title":"Thin-Wall Assembled SnO2 Fibers Functionalized by Catalytic Pt Nanoparticles and their Superior Exhaled-Breath-Sensing Properties for the Diagnosis of Diabetes","volume":"23","author":"Shin","year":"2013","journal-title":"Adv. Funct. Mater."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/S0378-4347(97)00369-1","article-title":"Quantitative analysis by gas chromatography of volatile carbonyl compounds in expired air from mice and human","volume":"702","author":"Ebeler","year":"1997","journal-title":"J. Chromatogr. B Biomed. Sci. Appl."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/0021-9673(92)85209-C","article-title":"Detection of substituted benzenes in water at the pg\/mL level using solid-phase microextraction and gas chromatography-ion trap mass spectrometry","volume":"625","author":"Potter","year":"1992","journal-title":"J. Chromatogr."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Rydosz, A. (2018). Sensors for Enhanced Detection of Acetone as a Potential Tool for Noninvasive Diabetes Monitoring. Sensors, 18.","DOI":"10.3390\/s18072298"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"129651","DOI":"10.1016\/j.snb.2021.129651","article-title":"MEMS hydrogen gas sensor with wireless quartz crystal resonator","volume":"334","author":"Zhou","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2913","DOI":"10.1088\/0957-4484\/17\/12\/015","article-title":"Heterocrystal and bicrystal structures of ZnS nanowires synthesized by plasma enhanced chemical vapour deposition","volume":"17","author":"Jie","year":"2006","journal-title":"Nanotechnology"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"6856","DOI":"10.1039\/c2jm15365c","article-title":"Aluminium-doped n-type ZnS nanowires as high-performance UV and humidity sensors","volume":"22","author":"Jiang","year":"2012","journal-title":"J. Mater. Chem."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"6845","DOI":"10.1039\/c2jm16523f","article-title":"Gas sensors, thermistor and photodetector based on ZnS nanowires","volume":"22","author":"Wang","year":"2012","journal-title":"J. Mater. Chem."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1016\/j.snb.2017.01.179","article-title":"Au nanoparticles decorated ZnS hollow spheres for highly improved gas sensor performances","volume":"245","author":"Zhang","year":"2017","journal-title":"Sens. Actuators B"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1016\/j.snb.2018.02.172","article-title":"Optimization ethanol detection performance manifested by gas sensor based on In2O3\/ZnS rough microspheres","volume":"264","author":"Chen","year":"2018","journal-title":"Sens. Actuators B"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1016\/j.matlet.2016.11.087","article-title":"Synthesis and characterization of ZnS nanotubes assisted by ethylene glycol","volume":"189","author":"Gang","year":"2017","journal-title":"Mater. Lett."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.sbsr.2017.07.004","article-title":"Synthesis and characterization of ZnS quantum dots and application for development of arginine biosensor","volume":"15","author":"Verma","year":"2017","journal-title":"Sens. Bio-Sens. Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"123117","DOI":"10.1063\/1.3569590","article-title":"Nano-Schottky barrier diodes based on Sb-doped ZnS nanoribbons with controlled p-type conductivity","volume":"98","author":"Peng","year":"2011","journal-title":"Appl. Phys. Lett."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"8941","DOI":"10.1039\/c0cc02549f","article-title":"Ultrathin single crystal ZnS nanowires","volume":"46","author":"Zhang","year":"2010","journal-title":"Chem. Commun."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"12024","DOI":"10.1039\/c1cp20290a","article-title":"Uncovering the role of the ZnS treatment in the performance of quantum dot sensitized solar cells","volume":"13","author":"Guijarro","year":"2011","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1063\/1.88350","article-title":"ZnS blue-light-emitting diodes with an external quantum efficiency of 5\u00d710\u22124","volume":"27","author":"Katayama","year":"1975","journal-title":"Appl. Phys. Lett."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1016\/0921-4526(93)90187-B","article-title":"Ultraviolet laser and photodetector of CdZnS\/ZnS multiple quantum wells","volume":"191","author":"Tauchi","year":"1993","journal-title":"Phys. B Condens. Matter."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1501785","DOI":"10.1002\/aenm.201501785","article-title":"Improved Electrochemical Performance of Na-Ion Batteries in Ether-Based Electrolytes: A Case Study of ZnS Nanospheres","volume":"6","author":"Su","year":"2016","journal-title":"Adv. Energy Mater."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"115074","DOI":"10.1016\/j.ssi.2019.115074","article-title":"ZnS nanoparticles as the electrode materials for high-performance supercapacitors","volume":"343","author":"Yi","year":"2019","journal-title":"Solid State Ion."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"177551","DOI":"10.1016\/j.ceramint.2019.05.345","article-title":"ZnO\/ZnS core-shell nanostructures for hydrogen gas sensing performances","volume":"45","author":"Tsai","year":"2019","journal-title":"Ceram. Int."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1282082","DOI":"10.1016\/j.snb.2020.128208","article-title":"UV assisted ppb-level acetone detection based on hollow ZnO\/MoS2 nanosheets core\/shell heterostructures at low temperature","volume":"317","author":"Chang","year":"2020","journal-title":"Sens. Actuators B"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"115082","DOI":"10.1016\/j.mseb.2021.115082","article-title":"Room temperature and highly sensitive acetone sensor based on lead sulfide nanosheets","volume":"267","author":"Jahromi","year":"2021","journal-title":"Mater. Sci. Eng. B"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"114861","DOI":"10.1016\/j.mseb.2020.114861","article-title":"One-pot hydrothermal method synthesised SnS\/rGO nanocomposite under PVDF bonding for high-performance acetone gas sensor","volume":"263","author":"Ma","year":"2021","journal-title":"Mater. Sci. Eng. B"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"13765","DOI":"10.1039\/C9RA00441F","article-title":"NiO decorated CeO2 nanostructures as room temperature isopropanol gas sensors","volume":"9","author":"Jayababu","year":"2019","journal-title":"RSC Adv."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"6226","DOI":"10.1007\/s10854-016-6302-7","article-title":"Effect of sulphur concentration on the structural and electronic properties of ZnS nanoparticles synthesized using chemical precipitation method","volume":"28","author":"Sharma","year":"2017","journal-title":"J. Mater. Sci. Mater. Electron."},{"key":"ref_40","unstructured":"Cullity, B.D. (1978). Elements of X-ray Diffraction, Addison-Wesley."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"3537","DOI":"10.1039\/D0AY00834F","article-title":"H2-gas sensing and discriminating actions of a single-yarn sensor based on a Pd\/GO multilayered thin film using FFT","volume":"12","author":"Su","year":"2020","journal-title":"Anal. Methods"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"125120","DOI":"10.1016\/j.jhazmat.2021.125120","article-title":"Edge-enriched WS2 nanosheets on carbon nanofibers boosts NO2 detection at room temperature","volume":"411","author":"Xu","year":"2021","journal-title":"J. Hazard. Mater."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"129661","DOI":"10.1016\/j.snb.2021.129661","article-title":"Comparison of the characteristics of semiconductor gas sensors with different transducers fabricated on the same substrate","volume":"335","author":"Jung","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"595","DOI":"10.1016\/j.snb.2007.04.009","article-title":"Gas sensing properties of volume-doped CoTiO3 synthesized via polyol method","volume":"126","author":"Siemons","year":"2007","journal-title":"Sens. Actuators B"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"129886","DOI":"10.1016\/j.snb.2021.129886","article-title":"Cr-doped NiO nanoparticles as selective and stable gas sensor for ppb-level detection of benzyl mercaptan","volume":"339","author":"Li","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"2000435","DOI":"10.1002\/adfm.202000435","article-title":"MoS2 Van der Waals p\u2013n Junctions Enabling Highly Selective Room-Temperature NO2 Sensor","volume":"30","author":"Zheng","year":"2020","journal-title":"Adv. Funct. Mater."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"104305","DOI":"10.1063\/1.2924430","article-title":"Room-temperature high-sensitivity H2S gas sensor based on dendritic ZnO nanostructures with macroscale in appearance","volume":"103","author":"Zhang","year":"2008","journal-title":"Appl. Phys."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"129971","DOI":"10.1016\/j.snb.2021.129971","article-title":"Sn doping effect on NiO hollow nanofibers based gas sensors about the humidity dependence for triethylamine detection","volume":"340","author":"Yang","year":"2021","journal-title":"Sens. Actuators B"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1519","DOI":"10.1039\/D0MH00495B","article-title":"Platinum single atoms on tin oxide ultrathin films for extremely sensitive gas detection","volume":"7","author":"Xu","year":"2020","journal-title":"Mater. Horiz."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"16246","DOI":"10.1039\/D0TA03224G","article-title":"Surface functionalization of ZnO:Ag columnar thin films with AgAu and AgPt bimetallic alloy nanoparticles as an efficient pathway for highly sensitive gas discrimination and early hazard detection in batteries","volume":"8","author":"Vahl","year":"2020","journal-title":"J. Mater. Chem. 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