Publications by authors named "Gopika Premanand"
Article Synopsis
- Molybdenum trioxide (α-MoO) is an affordable alternative to platinum for hydrogen evolution reactions (HER), but it has problems with low electrical conductivity and few active sites.
- This study presents a new approach to improve α-MoO by creating a composite with nickel through a simple room-temperature synthesis and thermal annealing process, resulting in different mixed metal oxides.
- The composite formed at 400°C (MoO-400) significantly outperforms conventional α-MoO, achieving a fivefold increase in HER current density due to its improved structure and the beneficial interactions between nickel oxide and molybdenum.
A cobalt(II)-containing polyoxometalate, [HO][{Co(HO)}{Na(HO)}WO]·3HO (), has been isolated in a one-step facile aqueous synthesis and characterized unambiguously using single-crystal X-ray crystallography along with routine spectral analysis. The paratungstate cluster anion [WO] coordinates with {Co(HO)} and {Na(HO)} complex cations resulting in the formation of the water-insoluble compound having three-dimensional (3-D) extended structure. Motivated by the protonated water molecules existing as the counter cations in , herein, we demonstrate the detailed proton conductivity studies of the , reaching a value of 1.
View Article and Find Full Text PDFMolybdenum trioxide (MoO) is a well-known transition metal oxide that has drawn much attention as a functional material having numerous applications. However, a vast majority of studies have primarily focused on α-MoO, the thermodynamically stable polymorph of MoO. This present work encompasses the synthesis of single crystals of two metastable hexagonal MoO described by the formulas {MnNa}@[MoMoO] () and {CuNa}@[MoMoO] (), their comprehensive structural characterization by single-crystal X-ray crystallography, and routine spectral and microscopic studies.
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