Recent advances in selective and sensitive electrochemical spotting of toxic mercury (Hg+) and lithium (Li+) ions utilizing modified La-CdO/CdO electrode and its photocatalytic applications
9 affiliations
- 1Department of Chemistry, Dayananda Sagar College of Engineering
- 2Department of Civil Engineering, Dayananda Sagar College of Engineering
- 3Department of Civil Engineering, G Madegowda Institute of Technology
- 4Department of Civil Engineering, BGS Institute of Technology, Adichunchanagiri University
- 5Department of Civil Engineering, Dayananda Sagar Academy of Technology and Management Bengaluru
- 6Department of Chemistry, Centre for Nanoscience & Nanotechnology, Global Academy of Technology, Ideal Homes Township
- 7Department of Chemistry, Faculty of Science, Universiti Putra Malaysia
- 8Department of Applied Chemistry, School of Applied Sciences, Papua New Guinea University of Technology
- 9Centre for Advanced Devices and Systems, Centre of Excellence for Robotics and Sensing Technologies, Multimedia University
Abstract
A low-cost and sustainable systematic practices of aqueous one-pot combustion route that can be minimizing environmental waste for fabrication of CdO/La-CdO nanomaterials using bio-extracts act as capping and stabilizing agents. The synthesized samples were well examined by PXRD, TEM, SEM-EDAX, FT-IR, and UV-Visible spectral techniques for their structural confirmation. The CdO/La-CdO nano-framework is primarily exploited for the detection of environmental pollutants (Hg+ and Li+ ions) at trace-level using CV and EIS techniques due to its enhanced electronic properties. The emerging electrochemical sensing activities of CdO/La-CdO-graphite paste electrode proved an enhanced selectivity and sensitivity towards Hg+ and Li+ ions with different concentrations of 1 to 5 mM at 30mV/s scan rate in 0.1 M HCl. Linear Sweep Voltammetry/CV can be used for rapid assessment of electrochemical behavior of tailored nanoparticle with enhanced specific capacitance (Csp = 273 F/g). The increased current with inflated concentrations of Hg+ and Li+ ions were observed to be + 0.0052 and 4.3 × 10− 6 A/cm2 respectively at 1–5 mM at 30 mV/s. LOD and LOQ of La-CdO electrode for Hg+ ion was noted to be 0.137 mM & 0.415 mM respectively with maximum sensitivity at -0.72 V and for Li+ ions 0.24 mM & 0.68 mM respectively with maximum sensitivity at + 1.85 V. The regression line for sensitivity of prepared La-CdO electrode on Hg+ and Li+ ions are confirmed by its R2 values of 0.9508 and 0.9570 respectively, signifying a potentially improvable correlation for quantitative detection. The La-CdO photocatalyst exhibited outstanding photodegradation efficiency against Amranth (AMR) dye, reached 90% degradation in 125 min under Sunlight irradiation was discussed. The tailored CdO/La-CdO-graphite paste electrode assists the advanced selectivity, sensitivity, and fast measurement for detection of heavy metal entities poses an evidential threat to vitality and monitoring.
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BibTeX
@article{surendra2026recent,
title = {{Recent advances in selective and sensitive electrochemical spotting of toxic mercury (Hg+) and lithium (Li+) ions utilizing modified La-CdO/CdO electrode and its photocatalytic applications}},
author = {B. S. Surendra and H. N. Sowmya and B. R. Vidya and R. Shruthi and B. P. Deepthi and M. Bhaskar and Kar-Ban Tan and H. C. Ananda Murthy and Kah-Yoong Chan},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-62828-1},
url = {https://doi.org/10.1038/s41598-026-62828-1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Recent advances in selective and sensitive electrochemical spotting of toxic mercury (Hg+) and lithium (Li+) ions utilizing modified La-CdO/CdO electrode and its photocatalytic applications
AU - B. S. Surendra
AU - H. N. Sowmya
AU - B. R. Vidya
AU - R. Shruthi
AU - B. P. Deepthi
AU - M. Bhaskar
AU - Kar-Ban Tan
AU - H. C. Ananda Murthy
AU - Kah-Yoong Chan
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-62828-1
UR - https://doi.org/10.1038/s41598-026-62828-1
AB - A low-cost and sustainable systematic practices of aqueous one-pot combustion route that can be minimizing environmental waste for fabrication of CdO/La-CdO nanomaterials using bio-extracts act as capping and stabilizing agents. The synthesized samples were well examined by PXRD, TEM, SEM-EDAX, FT-IR, and UV-Visible spectral techniques for their structural confirmation. The CdO/La-CdO nano-framework is primarily exploited for the detection of environmental pollutants (Hg+ and Li+ ions) at trace-level using CV and EIS techniques due to its enhanced electronic properties. The emerging electrochemical sensing activities of CdO/La-CdO-graphite paste electrode proved an enhanced selectivity and sensitivity towards Hg+ and Li+ ions with different concentrations of 1 to 5 mM at 30mV/s scan rate in 0.1 M HCl. Linear Sweep Voltammetry/CV can be used for rapid assessment of electrochemical behavior of tailored nanoparticle with enhanced specific capacitance (Csp = 273 F/g). The increased current with inflated concentrations of Hg+ and Li+ ions were observed to be + 0.0052 and 4.3 × 10− 6 A/cm2 respectively at 1–5 mM at 30 mV/s. LOD and LOQ of La-CdO electrode for Hg+ ion was noted to be 0.137 mM & 0.415 mM respectively with maximum sensitivity at -0.72 V and for Li+ ions 0.24 mM & 0.68 mM respectively with maximum sensitivity at + 1.85 V. The regression line for sensitivity of prepared La-CdO electrode on Hg+ and Li+ ions are confirmed by its R2 values of 0.9508 and 0.9570 respectively, signifying a potentially improvable correlation for quantitative detection. The La-CdO photocatalyst exhibited outstanding photodegradation efficiency against Amranth (AMR) dye, reached 90% degradation in 125 min under Sunlight irradiation was discussed. The tailored CdO/La-CdO-graphite paste electrode assists the advanced selectivity, sensitivity, and fast measurement for detection of heavy metal entities poses an evidential threat to vitality and monitoring.
SN - 2045-2322
ER -