Scarlett Allende, Yang Liu, Muhammad Adeel Zafar, Mohan V. Jacob
{"title":"利用活化生物炭微波辅助热解合成亚硝酸盐传感器","authors":"Scarlett Allende, Yang Liu, Muhammad Adeel Zafar, Mohan V. Jacob","doi":"10.1007/s42768-022-00120-4","DOIUrl":null,"url":null,"abstract":"<div><p>Developing applications for the by-products obtained from waste processing is vital for resource recovery. The synthesis of ZnCl<sub>2</sub>-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process. Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode (GCE). The activated biochar exhibited a stacked carbon sheet, 254 m<sup>2</sup> g<sup>−1</sup> Brunauer, Emmett and Teller (BET) surface area, 0.076 cm<sup>3</sup> g<sup>−1</sup> pore volume, 189.53 m<sup>2</sup> g<sup>−1</sup> micropore area and oxygen-containing functional groups. The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%. This is crucial to determine the electrochemical properties of biochar. The sensor showed a significant current response and an excellent limit of detection of 0.97 µmol L<sup>−1</sup>. The modified-activated biochar electrochemical sensor demonstrated high selectivity, reproducibility (RSD=2.4%), and stability (RSD=2.6%).</p><h3>Graphical abstract</h3>\n <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\n </div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"1 - 11"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00120-4.pdf","citationCount":"4","resultStr":"{\"title\":\"Nitrite sensor using activated biochar synthesised by microwave-assisted pyrolysis\",\"authors\":\"Scarlett Allende, Yang Liu, Muhammad Adeel Zafar, Mohan V. Jacob\",\"doi\":\"10.1007/s42768-022-00120-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Developing applications for the by-products obtained from waste processing is vital for resource recovery. The synthesis of ZnCl<sub>2</sub>-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process. Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode (GCE). The activated biochar exhibited a stacked carbon sheet, 254 m<sup>2</sup> g<sup>−1</sup> Brunauer, Emmett and Teller (BET) surface area, 0.076 cm<sup>3</sup> g<sup>−1</sup> pore volume, 189.53 m<sup>2</sup> g<sup>−1</sup> micropore area and oxygen-containing functional groups. The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%. This is crucial to determine the electrochemical properties of biochar. The sensor showed a significant current response and an excellent limit of detection of 0.97 µmol L<sup>−1</sup>. The modified-activated biochar electrochemical sensor demonstrated high selectivity, reproducibility (RSD=2.4%), and stability (RSD=2.6%).</p><h3>Graphical abstract</h3>\\n <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\\n </div>\",\"PeriodicalId\":807,\"journal\":{\"name\":\"Waste Disposal & Sustainable Energy\",\"volume\":\"5 1\",\"pages\":\"1 - 11\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-01-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s42768-022-00120-4.pdf\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Waste Disposal & Sustainable Energy\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s42768-022-00120-4\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Waste Disposal & Sustainable Energy","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s42768-022-00120-4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nitrite sensor using activated biochar synthesised by microwave-assisted pyrolysis
Developing applications for the by-products obtained from waste processing is vital for resource recovery. The synthesis of ZnCl2-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process. Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode (GCE). The activated biochar exhibited a stacked carbon sheet, 254 m2 g−1 Brunauer, Emmett and Teller (BET) surface area, 0.076 cm3 g−1 pore volume, 189.53 m2 g−1 micropore area and oxygen-containing functional groups. The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%. This is crucial to determine the electrochemical properties of biochar. The sensor showed a significant current response and an excellent limit of detection of 0.97 µmol L−1. The modified-activated biochar electrochemical sensor demonstrated high selectivity, reproducibility (RSD=2.4%), and stability (RSD=2.6%).
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