CuO nanoflowers as an electrochemical pH sensor and the effect of pH on the growth

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 662; no. 2; pp. 421 - 425
• Main Authors: Zaman, S., Asif, M.H., Zainelabdin, A., Amin, G., Nur, O., Willander, M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 2011; Elsevier
• Subjects: absorption; Analytical chemistry; Chemistry; CuO nanoflower; Electrochemical; electrochemistry; Exact sciences and technology; General, instrumentation; Morphological effect; nanomaterials; pH sensor; Repeatability; TECHNOLOGY; TEKNIKVETENSKAP; X-ray diffraction; Repeatability; Morphological effect; CuO nanoflower; pH sensor; Electrochemical; Scanning electron microscopy; Growth; Nanostructure; Chemical sensor; Potentiometry; Field emission microscopy; Electrochemical detector; Surface structure; Copper Oxides; Medium effect; Morphology; pHmeter; pH
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2011.09.015

► CuO NFs were used to fabricate pH sensors. ► Fabricated pH sensors show good response. ► Developed sensor is stable and reproducible. ► We also study the effect of pH on the morphology of CuO > CuO nanostructures is changed at different pH. Well-crystallized flower-shaped cupric oxide (CuO) nanostructures composed of thin leaves have been synthesized by simple low-temperature chemical bath method and used to fabricate pH sensor. We examined the effect of the pH on the growth of the CuO nanostructures, by changing the pH of the precursor solutions different morphologies of the CuO nanostructures were obtained. CuO nanoflowers have recently become important as a material that provides an effective surface for electrochemical activities with enhanced sensing characteristics. The proposed sensor exhibited a linear electrochemical response within a wide pH range of (2–11). The experimental results (time response, electrochemical activity, reproducibility, absorption spectra, and XRD) indicate that the CuO nanoflowers can be used in pH sensor applications with enhanced properties.