{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T01:10:08Z","timestamp":1783473008012,"version":"3.55.0"},"reference-count":184,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2024,8,23]],"date-time":"2024-08-23T00:00:00Z","timestamp":1724371200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"K2 Center","award":["886385"],"award-info":[{"award-number":["886385"]}]},{"name":"Austrian Federal Ministries for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK)","award":["886385"],"award-info":[{"award-number":["886385"]}]},{"name":"Labour and Economy (BMAW)","award":["886385"],"award-info":[{"award-number":["886385"]}]},{"name":"Austrian Research Promotion Agency (FFG)","award":["886385"],"award-info":[{"award-number":["886385"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Buildings worldwide are becoming more thermally insulated, and air circulation is being reduced to a minimum. As a result, measuring indoor air quality is important to prevent harmful concentrations of various gases that can lead to safety risks and health problems. To measure such gases, it is necessary to produce low-cost and low-power-consuming sensors. Researchers have been focusing on semiconducting metal oxide (SMOx) gas sensors that can be combined with intelligent technologies such as smart homes, smart phones or smart watches to enable gas sensing anywhere and at any time. As a type of SMOx, p-type gas sensors are promising candidates and have attracted more interest in recent years due to their excellent electrical properties and stability. This review paper gives a short overview of the main development of sensors based on copper oxides and their composites, highlighting their potential for detecting CO2 and the factors influencing their performance.<\/jats:p>","DOI":"10.3390\/s24175469","type":"journal-article","created":{"date-parts":[[2024,8,23]],"date-time":"2024-08-23T12:58:07Z","timestamp":1724417887000},"page":"5469","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["A Review of Gas Sensors for CO2 Based on Copper Oxides and Their Derivatives"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-8963-968X","authenticated-orcid":false,"given":"Christian","family":"Maier","sequence":"first","affiliation":[{"name":"Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria"},{"name":"Institute for Chemistry and Technology of Materials, TU Graz, Stremayrgasse 9, 8010 Graz, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6723-9110","authenticated-orcid":false,"given":"Larissa","family":"Egger","sequence":"additional","affiliation":[{"name":"Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4349-8377","authenticated-orcid":false,"given":"Anton","family":"K\u00f6ck","sequence":"additional","affiliation":[{"name":"Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7970-6273","authenticated-orcid":false,"given":"Klaus","family":"Reichmann","sequence":"additional","affiliation":[{"name":"Institute for Chemistry and Technology of Materials, TU Graz, Stremayrgasse 9, 8010 Graz, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,23]]},"reference":[{"key":"ref_1","unstructured":"(2023, March 23). 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