P. Marques, G. Z. Monteiro, I. Pereyra, K. F. Albertin
{"title":"基于TiO2纳米管阵列的pH传感器","authors":"P. Marques, G. Z. Monteiro, I. Pereyra, K. F. Albertin","doi":"10.1109/IBERSENSOR.2014.6995523","DOIUrl":null,"url":null,"abstract":"pH sensor fabricated with TiO2 nanotube arrays with diameter and length controlled by the anodization voltage and time were obtained and characterized. The TiO2 nanotube arrays were obtained by Ti foil anodization in a NH4F organic solution with 20 and 40 V for 5, 15 and 25 min. pH sensors based on Ti2 NTs electrodes presented linear response respect to the pH value in the 4-10 pH range. The pH sensor with nanotubes obtained with 20V / 25 min presents a reproducible response and the best sensitivity value, 45.8 mV/pH. This TiO2 NTs pH sensor irradiated by UV shows a very stable response and a sensitivity value of 50.9 mV/pH close to Nernst equation (59 mV/pH).","PeriodicalId":296271,"journal":{"name":"2014 IEEE 9th IberoAmerican Congress on Sensors","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"pH sensors based in TiO2 NTs arrays\",\"authors\":\"P. Marques, G. Z. Monteiro, I. Pereyra, K. F. Albertin\",\"doi\":\"10.1109/IBERSENSOR.2014.6995523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"pH sensor fabricated with TiO2 nanotube arrays with diameter and length controlled by the anodization voltage and time were obtained and characterized. The TiO2 nanotube arrays were obtained by Ti foil anodization in a NH4F organic solution with 20 and 40 V for 5, 15 and 25 min. pH sensors based on Ti2 NTs electrodes presented linear response respect to the pH value in the 4-10 pH range. The pH sensor with nanotubes obtained with 20V / 25 min presents a reproducible response and the best sensitivity value, 45.8 mV/pH. This TiO2 NTs pH sensor irradiated by UV shows a very stable response and a sensitivity value of 50.9 mV/pH close to Nernst equation (59 mV/pH).\",\"PeriodicalId\":296271,\"journal\":{\"name\":\"2014 IEEE 9th IberoAmerican Congress on Sensors\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-12-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 IEEE 9th IberoAmerican Congress on Sensors\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IBERSENSOR.2014.6995523\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 IEEE 9th IberoAmerican Congress on Sensors","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IBERSENSOR.2014.6995523","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
pH sensor fabricated with TiO2 nanotube arrays with diameter and length controlled by the anodization voltage and time were obtained and characterized. The TiO2 nanotube arrays were obtained by Ti foil anodization in a NH4F organic solution with 20 and 40 V for 5, 15 and 25 min. pH sensors based on Ti2 NTs electrodes presented linear response respect to the pH value in the 4-10 pH range. The pH sensor with nanotubes obtained with 20V / 25 min presents a reproducible response and the best sensitivity value, 45.8 mV/pH. This TiO2 NTs pH sensor irradiated by UV shows a very stable response and a sensitivity value of 50.9 mV/pH close to Nernst equation (59 mV/pH).
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