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.
CuS NPs MCPE was used for caffeine sensor.
CuS NPs MCPE exhibited better electrocatalytic activity towards the oxidation of caffeine.
The electrokinetic rate of CuS NPs MCPE towards caffeine oxidation was found to be 2.174 × 103 s−1.
The sensor showed lower detection limit, higher sensitivity and selectivity, wide linear range, good reproducibility and stability.