Fuku, Xolile GModibedi, Remegia MMkhohlakali, AndileMathe, Mahlanyane K2022-05-092022-05-092021-08Fuku, X.G., Modibedi, R.M., Mkhohlakali, A. & Mathe, M.K. 2021. Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage. <i>New journal of chemistry, 45(37).</i> http://hdl.handle.net/10204/124021144-05461369-9261DOI: 10.1039/d1nj02184bhttp://hdl.handle.net/10204/12402The co-existence of metal oxides (MO) and activated carbon (AC) causes changes in the catalytic behaviour and activity which would contribute greatly to a number of applications. Pd–AC/Bi2O3/CuO synthesized via the green process was used as a catalyst for electro-oxidation of ethanol and energy storage. Carbonization at 800 °C and hydrothermal treatment in a microwave oven yielded biocarbon (BC) from banana peels with mesoporous and high surface area (690.42 m2 g-1). Cyclic voltammetry (CV), galvanostatic charge–discharge, electrochemical impedance spectroscopy, and chronoamperometry were used to assess the electroactivity of the catalyst (CA). CV of Pd–AC/Bi2O3/CuO revealed 40% enhanced current densities (j) in ethanol electro-oxidation compared to that of the prepared Pd/AC, while the j determined at 20 min of CA measurements was 60% higher than those of the other prepared catalysts. Among the other catalysts, Pd–AC/Bi2O3/CuO revealed high capacitive j and confirmed the near ideal capacitive behaviour with good electrochemical reversibility while the calculated Csp of the electrode system was found to be 369.1 F g-1 at 0.95 mA cm-2. The calculated time constant (t0) value for Pd–AC/Bi2O3/CuO was higher, 390 ms, implying that the catalyst performs better with quick delivery of stored charges indicating better energy delivery capability.AbstractenActivated carbonMetal oxidesMOArticleFuku, X. G., Modibedi, R. M., Mkhohlakali, A., & Mathe, M. K. (2021). Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage. <i>New journal of chemistry, 45(37)</i>, http://hdl.handle.net/10204/12402Fuku, Xolile G, Remegia M Modibedi, Andile Mkhohlakali, and Mahlanyane K Mathe "Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage." <i>New journal of chemistry, 45(37)</i> (2021) http://hdl.handle.net/10204/12402Fuku XG, Modibedi RM, Mkhohlakali A, Mathe MK. Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage. New journal of chemistry, 45(37). 2021; http://hdl.handle.net/10204/12402.TY - Article AU - Fuku, Xolile G AU - Modibedi, Remegia M AU - Mkhohlakali, Andile AU - Mathe, Mahlanyane K AB - The co-existence of metal oxides (MO) and activated carbon (AC) causes changes in the catalytic behaviour and activity which would contribute greatly to a number of applications. Pd–AC/Bi2O3/CuO synthesized via the green process was used as a catalyst for electro-oxidation of ethanol and energy storage. Carbonization at 800 °C and hydrothermal treatment in a microwave oven yielded biocarbon (BC) from banana peels with mesoporous and high surface area (690.42 m2 g-1). Cyclic voltammetry (CV), galvanostatic charge–discharge, electrochemical impedance spectroscopy, and chronoamperometry were used to assess the electroactivity of the catalyst (CA). CV of Pd–AC/Bi2O3/CuO revealed 40% enhanced current densities (j) in ethanol electro-oxidation compared to that of the prepared Pd/AC, while the j determined at 20 min of CA measurements was 60% higher than those of the other prepared catalysts. Among the other catalysts, Pd–AC/Bi2O3/CuO revealed high capacitive j and confirmed the near ideal capacitive behaviour with good electrochemical reversibility while the calculated Csp of the electrode system was found to be 369.1 F g-1 at 0.95 mA cm-2. The calculated time constant (t0) value for Pd–AC/Bi2O3/CuO was higher, 390 ms, implying that the catalyst performs better with quick delivery of stored charges indicating better energy delivery capability. DA - 2021-08 DB - ResearchSpace DP - CSIR J1 - New journal of chemistry, 45(37) KW - Activated carbon KW - Metal oxides KW - MO LK - https://researchspace.csir.co.za PY - 2021 SM - 1144-0546 SM - 1369-9261 T1 - Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage TI - Co-existence of Pd, Bi2O3 and CuO supported on porous activated biocarbon for electrochemical conversion and energy storage UR - http://hdl.handle.net/10204/12402 ER -25559