Sensitive determination of caffeine by copper sulphide nanoparticles modified carbon paste electrode
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- 作者：Mallappa Mahanthappaa ; b ; cAuthor Vitae ; Shivaraj Yellappaa ; shivaraj_y@rediffmail.com" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Nagaraju KottambAuthor Vitae ; Chiranjeevi Srinivasa Rao VusadAuthor Vitae
- 关键词：CuS NPs ; Co-precipitation method ; CuS NPs MCPE ; Electrocatalytic activity
- 刊名：Sensors and Actuators A: Physical
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：248
- 期：Complete
- 页码：104-113
- 全文大小：2381 K
文摘
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Starch assisted synthesis of CuS NPs by simple co-precipitation method in aqueous media.
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CuS NPs MCPE was used for caffeine sensor.
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CuS NPs MCPE exhibited better electrocatalytic activity towards the oxidation of caffeine.
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The electrokinetic rate of CuS NPs MCPE towards caffeine oxidation was found to be 2.174 × 103 s−1.
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The sensor showed lower detection limit, higher sensitivity and selectivity, wide linear range, good reproducibility and stability.