Ganesh Chandra Nayak

Thermal conversion of a toxic Pb( ii ) loaded MOF/GO hybrid adsorbent to a symmetric supercapacitor device.

The synthesis and multifunctional applications of Ti ₃ C ₂ T _x –MXene quantum dots (MQDs) anchored on MOF-derived Ni-loaded nitrogen-doped carbon sheets (Ni@NCS) for superior microwave absorption (MA) and energy storage applications.

Ni–HBSF enabled sensitive sensing of Sunset Yellow and Tartrazine (LODs: 0.949 and 0.534 ppm) and delivered 232.1 F g ⁻¹ at 2 A g ⁻¹ with 97% capacitance retention after 10 000 cycles.

Herein, we focus on optimising the electrospinning parameters to fabricate well-defined, physically distinct cotton-like fibres of polymethyl methacrylate (PMMA) with the incorporation of 0.39 wt% graphene oxide (GO).

This study presents an innovative strategy for utilizing passive cigarette smoke aerosol, a common pollutant, to prepare a sustainable supercapacitor cathode. The cathode system is developed with in situ growth of carbon dots from cigarette smoke aerosol on the acid modified nanoclay (ANc), which reduces the internal resistance of layered silicates. The modified nanoclay is subsequently combined with pseudocapacitive layered MoS ₂ to enhance the electrochemical performance by redox reaction during charging and discharging cycles. To achieve optimum conductivity and specific capacitance (Sp.Cp.), both carbon dots and MoS ₂ loading are varied and corresponding Sp.Cp. is calculated in the three electrode and asymmetric device configuration, respectively. The successful formation of the carbon dot modified ANc based MoS ₂ composite is confirmed through a combination of structural, morphological, and spectroscopic characterization techniques. Asymmetric supercapacitor devices are fabricated using the synthesized nanocomposite as the positive and graphite as the negative electrode in 1 M TEABF ₄ /DMSO electrolyte. Among acid modified nanocomposites, the device containing double the quantity of MoS ₂ shows a maximum Sp.Cp. of 119.7 F g ⁻¹ with 26.7 Wh kg ⁻¹ energy density and 500 W kg ⁻¹ power density at 1 A g ⁻¹ current density. Furthermore, the optimized electrode is able to illuminate red and disco LED lights, highlighting its potential application in sustainable energy storage systems. This work presents a novel approach for utilizing cigarette smoke aerosol into high performance supercapacitor electrode materials.

A new 2D Zn( ii )-based coordination polymer ( CP ) and its composite CP@ZnO were demonstrated as a promising material for the selective detection of acetonitrile and supercapacitor behavior.