Binita Nanda | Siksha O Anusandhan University (original) (raw)
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Papers by Binita Nanda
Microporous and Mesoporous Materials, 2016
Indian Chemical Engineer
The ecological balance is disturbed by the massive generation of solid waste (red mud) from alumi... more The ecological balance is disturbed by the massive generation of solid waste (red mud) from aluminum industries. It contained various types of metal oxides with different proportions, and it is ess...
Chemical Engineering Journal
h i g h l i g h t s Mesoporous ZrO 2-MCM-41synthesized by in situ incorporation process. CuO@ZM-4... more h i g h l i g h t s Mesoporous ZrO 2-MCM-41synthesized by in situ incorporation process. CuO@ZM-41 synthesized by modification of CuO onto the ZrO 2-MCM-41. CuO@ZM-41nacomposite shows semiconductor behavior and mesoporosity. High surface area, lower e À and h + recombination are enhancing the photo-reduction. g r a p h i c a l a b s t r a c t Mesoporous nanocomposite (CuO@ZM-41) is synthesized by incorporating mesoporous ZrO 2 (Z) into MCM-41 (M-41) framework followed by loading of CuO by wetness impregnation method. The synergism between CuO and the support material mesoporous ZM-41 and efficient light absorption on the surface of the composite is the key factor for the reduction Cr 6+ to Cr 3+ within 30 min time.
A series of ternary Cu@CuO-g-C 3 N 4 /MCM-41 photocatalysts have been synthesized by varying the ... more A series of ternary Cu@CuO-g-C 3 N 4 /MCM-41 photocatalysts have been synthesized by varying the percentage of Cu using simple impregnation and co-condensation methods. The physico-chemical characterization of all the samples was determined using XRD, FTIR, UV-Vis DRS, PL, N 2 ads-des studies, SEM and XPS HRTEM, EDAX, EIS and MS. The structural advantages of MCM-41, allow the uniform distribution of g-C 3 N 4 and coexistence of Cu 2+ along with Cu 0 without using a reducing agent. The presence of g-C 3 N 4 helps to shift the Fermi level of CuO towards more negative values due to accumulation of photogenerated electrons on the surface. It favours charge separation by creating a Schottky barrier at the junction. The 4 wt% Cu loaded over g-C 3 N 4 /MCM-41 exhibits a maximum 750 mmol 2 h À1 of H 2 evolution under visible light irradiation with an apparent energy conversion efficiency of 24.8%. The enhancement in catalytic activity has been explained on the basis of synergism between g-C 3 N 4 and Cu 2+ and the SPR effect of Cu which also acts as a co-catalyst present on the surface of photocatalysts.
Microporous and Mesoporous Materials, 2016
Indian Chemical Engineer
The ecological balance is disturbed by the massive generation of solid waste (red mud) from alumi... more The ecological balance is disturbed by the massive generation of solid waste (red mud) from aluminum industries. It contained various types of metal oxides with different proportions, and it is ess...
Chemical Engineering Journal
h i g h l i g h t s Mesoporous ZrO 2-MCM-41synthesized by in situ incorporation process. CuO@ZM-4... more h i g h l i g h t s Mesoporous ZrO 2-MCM-41synthesized by in situ incorporation process. CuO@ZM-41 synthesized by modification of CuO onto the ZrO 2-MCM-41. CuO@ZM-41nacomposite shows semiconductor behavior and mesoporosity. High surface area, lower e À and h + recombination are enhancing the photo-reduction. g r a p h i c a l a b s t r a c t Mesoporous nanocomposite (CuO@ZM-41) is synthesized by incorporating mesoporous ZrO 2 (Z) into MCM-41 (M-41) framework followed by loading of CuO by wetness impregnation method. The synergism between CuO and the support material mesoporous ZM-41 and efficient light absorption on the surface of the composite is the key factor for the reduction Cr 6+ to Cr 3+ within 30 min time.
A series of ternary Cu@CuO-g-C 3 N 4 /MCM-41 photocatalysts have been synthesized by varying the ... more A series of ternary Cu@CuO-g-C 3 N 4 /MCM-41 photocatalysts have been synthesized by varying the percentage of Cu using simple impregnation and co-condensation methods. The physico-chemical characterization of all the samples was determined using XRD, FTIR, UV-Vis DRS, PL, N 2 ads-des studies, SEM and XPS HRTEM, EDAX, EIS and MS. The structural advantages of MCM-41, allow the uniform distribution of g-C 3 N 4 and coexistence of Cu 2+ along with Cu 0 without using a reducing agent. The presence of g-C 3 N 4 helps to shift the Fermi level of CuO towards more negative values due to accumulation of photogenerated electrons on the surface. It favours charge separation by creating a Schottky barrier at the junction. The 4 wt% Cu loaded over g-C 3 N 4 /MCM-41 exhibits a maximum 750 mmol 2 h À1 of H 2 evolution under visible light irradiation with an apparent energy conversion efficiency of 24.8%. The enhancement in catalytic activity has been explained on the basis of synergism between g-C 3 N 4 and Cu 2+ and the SPR effect of Cu which also acts as a co-catalyst present on the surface of photocatalysts.