Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 63-42-3, Name is Lactose, molecular formula is , belongs to tetrahydrofurans compound. In a document, author is Munawar, Khadija, SDS of cas: 63-42-3.
Optical and photocatalytic properties of biomimetic cauliflowered Ca2Mn3O8-CaO composite thin films
Inspired from the mu-oxido CaMn4 cluster unit present in the photosystem-II of plant cells, various manganesebased materials, particularly calcium-manganese oxides, have been investigated by the researchers as a new class of catalysts. Herein, we report the synthesis of single source heterobimetallic complex {[CaMn(OAc)(TFA)(3)(THF)(H2O)(2)](center dot)3THF}(n), (where OAc = acetate, TFA = trifluoroacetate and THE = tetrahydrofuran) for the deposition of thin films of Ca2Mn3O8-CaO composite on fluorine doped fin oxide (FTO) coated glass substrates at deposition temperatures of 450-550 degrees C via the aerosol assisted chemical vapour deposition (AACVD) method. The complex was characterized by melting point, microanalysis, proton nuclear magnetic resonance (H-1 NMR), Fourier transformed infra-red (FT-IR) spectroscopy, thermogravimetry (TGA) and single crystal X-ray diffraction. The deposited thin films were analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDX) and field emission scanning electron microscopy (FESEM) which confirmed the growth of Ca2Mn3O8-CaO composite with high purity and precise stoichiometry. The optical characterization gave direct band gap energies of 2.74, 2.68 and 2.77 eV for the Ca2Mn3O8-CaO thin films deposited at 450, 500 and 550 degrees C, respectively. Furthermore, photoelectrochemical studies revealed that the thin film deposited at 500 degrees C showed the photocurrent of 3.75 mA cm(-2) at +0.8 V vs. SCE with 1.64% photo-conversion efficiency and 310 Omega R-ct value, upon illumination with a 150 W (100 mW cm(-2)) halogen lamp. The improved photocatalytic activity of Ca2Mn3O8-CaO composite was due to the increased photo absorption ability, elevated surface area, and more efficient electron/hole transfer. In addition, this work provides an insight to design the growth of visible light active calcium-manganese based photocatalyst materials for solar energy utilization.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 63-42-3, in my other articles. SDS of cas: 63-42-3.
Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem