The synthesis of CaCO3/Cu2O/GO nanocomposites was developed by sol-gel auto-combustion method. analysis structure completed on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and environmental scanning electron microscopy (ESEM). XRD spectra the matched crystal CaCO3/Cu2O. average size 20 nm for Cu2O 25 CaCO3 nanoparticles. FTIR data showed absorptio...

The biological synthesis of nanoparticles with copper, silver, and zinc (Cu, Ag, Zn) is reported in this study, adopting a greener, safe, reliable, eco-friendly approach by using an aqueous leaf extract Catharanthus roseus. synthesised trimetallic were characterised different characterisation techniques. UV–visible spectroscopic technique was initially used to assess nanoparticle formation, whi...

Aporetinochrome, which is a protein moiety of retinochrome without chromophore retinal, is found in the membrane containing retinochrome. All of the prosthetic retinal of retinochrome in membranes, which is all-trans retinal, is bound to the chromophoric site on the protein moiety, with protonated Schiff bases showing an absorption band with the maximum at 495 nm. On exposure to light, retinoch...

Despite the developments in the wet chemical synthesis of high-quality semiconductor nanocrystals (NCs) with diverse elemental compositions, telluride NCs are still irreplaceable materials owing to their excellent photovoltaic and thermoelectric performances. Herein we demonstrate the dissolution of elemental tellurium (Te) in a series of alkylamides by sodium borohydride (NaBH4) reduction at r...

Uroporphyrinogen III synthase purified from rat liver is a monomer of Mr 36,000 by gel filtration and 28,000 by SDS/polyacrylamide-gel electrophoresis. The enzyme exists in two interconvertible forms separable on h.p.l.c. Both forms of the enzyme could be renatured with full activity after SDS/polyacrylamide-gel electrophoresis, demonstrating the absence of a reversibly bound cofactor. The enzy...

The effect of increasing the pulp yield by the addition of sodium borohydride (NaBH4) or polysulfide (PS) in softwood kraft cooking, i.e. enhancing the retention of glucomannan, on the physical properties of low-grammage handsheets was studied. In addition to the yield improvement, an increase in tensile index was observed, especially at lower degrees of beating. These higher yield pulps showed...

As catalytic hydrogenation is validated as one of the most useful approach to reduce a potential carcinogenic bromate in water, usage continuous purge H2 gas and precious metal catalysts are typically required, making it less feasible for practical implementation. Since sodium borohydride (NaBH4) represents alternative source releasing non-precious (cobalt (Co)) usually required accelerate hydr...

The B–H bond length of the borohydride anion (BH4?) in alkali metal borohydrides MBH4 with M = Na, K, Rb, Cs, and diluted different halide matrices, was investigated experimentally by infrared spectroscopy (FTIR) theoretically using first principles calculations. peak positions IR absorption spectra NaBH4 pressed at 754 MPa halides NaX KX X Cl, Br, I show significant variations indicating ion e...