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The responses of the composite material toward CH<jats:sub>3<\/jats:sub>OH were enhanced by the selective permeation of CH<jats:sub>3<\/jats:sub>OH through the hydrophilic channels of the Nafion membrane in combination with the electroactivity of Cu<jats:sub>2<\/jats:sub>O nanoparticles. The sensor displayed a linear detection range of 0.33\u2013100\u2009mM CH<jats:sub>3<\/jats:sub>OH with a sensitivity of 0.17\u2009<jats:italic>\u03bc<\/jats:italic>A\u00b7mM<jats:sup>\u22121<\/jats:sup> and a detection limit (3\u2009s\/m) of 0.10\u2009mM. It exhibited excellent reproducibility with a relative standard deviation of &lt;5%. The sensor\u2019s practical applicability was demonstrated through recovery studies on hand sanitizer samples, achieving ca. 100% recovery. The sensor was further used to elucidate CH<jats:sub>3<\/jats:sub>OH adsorption on activated carbon, revealing that the process conforms to the Langmuir isotherm model.<\/jats:p>","DOI":"10.1155\/2024\/1809578","type":"journal-article","created":{"date-parts":[[2024,9,28]],"date-time":"2024-09-28T10:20:17Z","timestamp":1727518817000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Electrochemical Analysis of Methanol with Nafion\u2010Coated Copper Oxide Nanoparticles"],"prefix":"10.1155","volume":"2024","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-7849-1331","authenticated-orcid":false,"given":"Pantipa","family":"Sawatmuenwai","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-4421-8609","authenticated-orcid":false,"given":"Keerakit","family":"Kaewket","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0328-5462","authenticated-orcid":false,"given":"Kamonwad","family":"Ngamchuea","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,9,28]]},"reference":[{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/b978-0-444-63903-5.00001-7"},{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1081\/clt-120018267"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s13181-021-00824-9"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1152\/physrev.00034.2014"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.5b12303"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.1039\/c9ta06088j"},{"key":"e_1_2_8_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201903290"},{"key":"e_1_2_8_8_2","doi-asserted-by":"publisher","DOI":"10.1039\/c6cp01964a"},{"key":"e_1_2_8_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202004541"},{"key":"e_1_2_8_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.apsusc.2021.149016"},{"key":"e_1_2_8_11_2","doi-asserted-by":"publisher","DOI":"10.1039\/c8ta07958g"},{"key":"e_1_2_8_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.201710605"},{"key":"e_1_2_8_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jiec.2019.04.019"},{"key":"e_1_2_8_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.coelec.2022.101193"},{"key":"e_1_2_8_15_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.4989472"},{"key":"e_1_2_8_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.1c05933"},{"key":"e_1_2_8_17_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.8b10284"},{"key":"e_1_2_8_18_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.0c10278"},{"key":"e_1_2_8_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/0376-7388(96)00155-x"},{"key":"e_1_2_8_20_2","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.8b02217"},{"key":"e_1_2_8_21_2","doi-asserted-by":"publisher","DOI":"10.1149\/1945-7111\/aceab5"},{"key":"e_1_2_8_22_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr0207123"},{"key":"e_1_2_8_23_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-019-12223-4"},{"key":"e_1_2_8_24_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.isci.2021.102050"},{"key":"e_1_2_8_25_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.elecom.2011.02.022"},{"key":"e_1_2_8_26_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.snb.2018.03.028"},{"key":"e_1_2_8_27_2","doi-asserted-by":"publisher","DOI":"10.1039\/d0ra04455e"},{"key":"e_1_2_8_28_2","doi-asserted-by":"publisher","DOI":"10.1002\/cctc.201902371"},{"key":"e_1_2_8_29_2","doi-asserted-by":"publisher","DOI":"10.1016\/s1003-9953(10)60166-1"},{"key":"e_1_2_8_30_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijleo.2017.12.119"},{"key":"e_1_2_8_31_2","first-page":"16","article-title":"Surfactant assisted synthesis of cuprous oxide (Cu2O) nanoparticles via solvothermal process","volume":"3","author":"Khan M.","year":"2015","journal-title":"Nanoscience and Nanotechnology Research"},{"key":"e_1_2_8_32_2","doi-asserted-by":"publisher","DOI":"10.1149\/1.2137648"},{"key":"e_1_2_8_33_2","doi-asserted-by":"publisher","DOI":"10.1021\/acsomega.7b01765"},{"key":"e_1_2_8_34_2","doi-asserted-by":"publisher","DOI":"10.1002\/open.201402050"},{"key":"e_1_2_8_35_2","doi-asserted-by":"publisher","DOI":"10.1149\/2.0071605jes"},{"key":"e_1_2_8_36_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.electacta.2005.04.036"},{"key":"e_1_2_8_37_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.fuel.2014.10.001"},{"key":"e_1_2_8_38_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jelechem.2012.01.016"},{"key":"e_1_2_8_39_2","article-title":"Understanding voltammetry","author":"Compton R. 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