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Articles by C. Samanta
Coupling of anthocyanins at defective carbon nitride (C3N5) with π-π stacking for efficient photocatalytic H2O2 generation
Hydrogen peroxide (H2O2) is a powerful and environmentally friendly oxidant with a wide range of applications [1], including bleaching of pulp and textiles [2], [3], chemical synthesis [4], [5], wastewater treatment [6], [7], and mining [8]. Currently, over 95 % of H2O2 is produced through the anthraquinone oxidation process [9]. This process not only requires metals as catalysts, but generates a large amount of organic waste liquids, which places a significant burden on the environment.
Synergistic effect of lightning rod and piezo-photocatalysis in sea urchin-shape Zn-MOF-74@g-C3N4 step-scheme heterojunction for H2O2 production under visible light irradiation
H2O2 was an important green oxidant widely used in sterilization and disinfection [1], [2], [3]. However, its industrial production from organic matter such as anthraquinone posed pollution risks [4]. The direct synthesis method using a mixture of H2 and O2 required a noble metal catalyst and carries the risk of explosion [5]. Therefore, finding a green and safe production method was crucial.
Tandem photocatalytic production of H2O2 and propylene oxide on 5-Bromoisatin modified carbon nitride
As an important basic chemical raw material for the production of polyether polyol, propylene glycol and various non-ionic surfactants, propylene oxide (PO) is the third largest propylene derivative after polypropylene and acrylonitrile [1], [2], [3]. In 2021, China's PO production was about 3.46 million tons, while its apparent demand was about 3.89 million tons. With the development of downstream polyurethane industry, the PO demand will continue to grow in the next few years [4].
Cooling and self-oscillation in a nanotube electromechanical resonator
Abstract Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins and electrons1,2. The motion of a mechanical eigenmode can be efficiently cooled into the quantum regime using photons2,3,4, but not other degrees of freedom. Here, we demonstrate a simple yet powerful method for cooling, amplification and self-oscillation using electrons.
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