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. 2022 Oct 28;12(48):30921-30927.
doi: 10.1039/d2ra05511b. eCollection 2022 Oct 27.

A realistic perspective for CO2 triggered tuning of electrical conductivity

Mizaj Shabil Sha  1 , Bijandra Kumar  2 , Aboubakr M Abdullah  1 , Suresh Muthusamy  3 , Kishor Kumar Sadasivuni  1
Affiliations

A realistic perspective for CO2 triggered tuning of electrical conductivity

Mizaj Shabil Sha et al. RSC Adv. .

Abstract

To seek sustainable CO2 sequestration and conversion, an electrochemical cell has been investigated for carbon capture and utilization strategy (CCU). In this cell, atmospheric CO2 is captured under ambient conditions and incorporated into power generation using zinc nanopowder as the catalyst. As a result, a method was developed to tune the electronic property of zinc by passing CO2. It was observed that nearly three orders of magnitude of conductivity could be changed along with achieving a carbon capture strategy. The system also exhibited good stability. In this process, it was observed that efficient current generation could be achieved due to zinc's active participation as a catalyst. The detailed physicochemical characterizations of catalysts were also examined. XRD, FTIR and TEM analysis perform the structural and morphological characterization. The system performance was further investigated using different criteria.

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Conflict of interest statement

The authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1. (a) XRD pattern of zinc nanoparticles and (b) FTIR spectrum, insight represents FTIR representing the sharp and intense band.
Fig. 2
Fig. 2. TEM images of (a) zinc nanoparticles and (b) catalytic ink. (i) Crystalline structure, (ii) dispersion of particles (iii) SAED pattern, respectively.
Fig. 3
Fig. 3. Cyclic voltammetry plots for glucose cell (a) with and without CO2 (b) effect of scan rate in CO2 saturated glucose cell (c) CV curves obtained at different gas flow rates of CO2 (scan rate 50 mV s−1) (d) with and without N2.
Fig. 4
Fig. 4. Evaluation of the performance of CO2 saturated glucose cell (a) pH effect (b) effect of zinc loading (c) effect of glucose concentration.
Fig. 5
Fig. 5. Stability analysis (a) repeatability (b) sensing consistency.
Fig. 6
Fig. 6. EIS spectra of CO2 saturated and unsaturated solution.
See this image and copyright information in PMC

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