A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Recommanded Product: 16606-55-6, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 16606-55-6, Name is (R)-4-Methyl-1,3-dioxolan-2-one, molecular formula is C4H6O3. In an article, author is Kanwal, Aisha,once mentioned of 16606-55-6.
Cascade electron transfer in ternary CuO/alpha-Fe2O3/gamma-Al2O3 nanocomposite as an effective visible photocatalyst
Highly efficient ternary heterojunction of CuO/alpha-Fe2O3/gamma-Al2O3 was effectively fabricated by a facile and cost effective chemical route. The structural, chemical composition, morphology, optical and photocatalytic properties of as-prepared CuO/alpha-Fe2O3/gamma-Al2O3 photo catalyst were compared to pristine and binary samples by various characterization. Existence of all the dominant peaks of CuO, alpha-Fe2O3 and gamma-Al2O3 are noticeable in XRD spectrum of CuO/alpha-Fe2O3/gamma-Al2O3 ternary photo catalyst which confirms the successful formation of the photocatalyst. SEM and HRTEM results revealed the spherical shape CuO nanoparticles with distorted alpha-Fe2O3 agglomerated plates which led to complete diffusion with gamma-Al2O3. The band gap of ternary nanocomposite was found to be 1.9 eV elucidated by UV-DRS. Brunauer-Emmett-Teller (BET) analysis showed that as-fabricated ternary CuO/alpha-Fe2O3/gamma-Al(2)O(3 )nanocomposite exhibited the porous structure with large surface area and small pore volume as compared to pristine gamma-Al2O3.due to the unique ternary nanocomposite structure and synergistic effect among various components. The photocatalytic activity was examined by monitoring the deterioration of methyl orange under simulated solar light irradiation. CuO/alpha-Fe2O3/gamma-Al2O3 exhibited superior photocatalytic efficacy as compared to CuO/gamma-Al(2)O(3 )and alpha-Fe2O3/gamma-Al2O3 binary and pure oxides of gamma-Al2O3, CuO and alpha-Fe2O3. The marvelous photocatalytic activity of CuO/alpha-Fe2O3/gamma-Al2O3 ternary nanocomposite samples can be ascribed to their close contact, strong interfacial hybridization and proficient charge transfer capacity. The electrochemical studies such as linear sweep voltammetry (LSV) and cyclic voltammetry (CV) were carried out to explore the charge transfer behavior and support the high photo activity of ternary nanocomposite CuO/alpha-Fe2O3/gamma-Al2O3. LSV measurements manifested that CuO/alpha-Fe2O3/gamma-Al2O3 exhibited 4.3 folds higher current density than bare gamma-Al2O3 which confirmed the faster electron transfer from CuO to gamma-Al2O3 via mediated alpha-Fe2O3 through the interfacial potential gradient in conduction band. Cyclic voltammetry (CV) results showed that pair of anodic and cathodic peaks in CuO/alpha-Fe2O3/gamma-Al2O3 appeared which affirm the efficient increase in photoinduced e(-)/h(+) separation and suppress recombination rate of electron-hole pair. This work demonstrated that CuO/alpha-Fe2O3/gamma-Al2O3 ternary nanocomposite is found to be a promising candidate as an efficient adsorbent for organic dye removal from waste water.
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Reference:
Copper catalysis in organic synthesis – NCBI,
,Special Issue “Fundamentals and Applications of Copper-Based Catalysts”