Dexterous Route for Synthesis of Hollow Spherical ZnO and ZnO‐Ag Nanocomposite with Superior Photocatalytic Ability

Maity, Jayeta; Bhattacharjee, Gourab; Satpati, Biswarup; Sardar, Debasmita; Ghosalya, Manoj Kumar; Bala, Tanushree

doi:10.1002/slct.201900760

Cited by 5 publications

(3 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This alteration allows for increased light absorption in the UV region. Overall, the results suggest that the introduction of Ag into the ZnO-Ag composites significantly affects their optical properties, leading to improved absorbance characteristics in both the UV and visible regions [18][19][20]. These findings have implications for potential applications in areas such as optoelectronics, photonics, and photocatalysis.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Optical and Chemical Properties of ZnO-Ag Composites Synthesized from Mimosa Pudica and Andrographis Paniculata Extracts

Raknoi,

Chochuang,

Sangjan

2023

MSF

View full text Add to dashboard Cite

In this research, a comparison was made between the optical and chemical properties of ZnO-Ag composites with different ZnO and Ag ratios synthesized using extracts obtained from mimosa and Andrographis paniculata plants. The optical properties of the synthesized ZnO-Ag composites were analyzed, focusing on parameters such as absorption and bandgap energy. Moreover, the bandgap, which indicates the energy difference between the valence and conduction bands, was calculated to assess the compounds' electronic behavior. Furthermore, the chemical properties of the ZnO-Ag composites were investigated. This involved analyzing the chemical bond, crystal structure, and crystalline size using X-ray diffraction (XRD) and Fourier Transform Infrared Spectrometer (FT-IR). The experimental findings demonstrated that the crystal sizes of ZnO and Ag in ZnO-Ag composites synthesized using Mimosa pudica extract were considerably smaller compared to those synthesized using Andrographis paniculata extract. Consequently, the energy gap of the ZnO-Ag compounds synthesized with mimosa extract was higher in comparison to those synthesized with Andrographis paniculata extract. By comparing the optical and chemical properties of the ZnO-Ag composites synthesized from mimosa and Andrographis paniculata extracts, valuable insights can be gained regarding the influence of these plant extracts on the resulting composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Comparative Study of Optical and Chemical Properties of ZnO-Ag Composites Synthesized from Mimosa Pudica and Andrographis Paniculata Extracts

Raknoi,

Chochuang,

Sangjan

2023

MSF

View full text Add to dashboard Cite

show abstract

“…[3] Among them, semiconductor photocatalytic water splitting can directly convert H 2 O into H 2 fuel with the solar irradiation, which is deemed as a green strategy to achieve future massive production. [4] Since the pioneering work by photoelectrochemical water splitting on TiO 2 in 1972, [5] lots of semiconductor materials were reported as photocatalysts for photocatalytic hydrogen production, such as CdS, [6] g-C 3 N 4 [15], [7] ZnIn 2 S 4 [16], [8] SrTiO 3 [17], [9] ZnO, [10] etc.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Highly Crystalline ZnO Nanofibers: Super‐Efficient and Stable Photocatalytic Hydrogen Production Activity

Zhou¹,

Ye²,

Zhu³

et al. 2020

ChemistrySelect

View full text Add to dashboard Cite

ZnO has tremendous potential in photocatalysis, but only has moderate activity and poor stability because of the sluggish charge transfer and easy aggregation problem, respectively. In this work, ZnO photocatalyst with well-defined one dimensional (1D) nanofiber structure was successfully fabricated for overcoming these defects. The results revealed that the ZnO nanofibers consist of compactly packed particles that form a cylinder type fiber in highly crystalline and high purity. The robust 1D nanostructure not only can suppress the aggregation of nanoparticles, but also facilitate the interparticle charge transfer. Besides, the mesoporous structure generated through the ZnO particle-particle interconnection can promote the adsorption of reactants and desorption of products. Benefiting from these merits, the ZnO nanofibers photocatalyst presented superior higher and stable hydrogen production ability than that of nanoparticles counterpart. The photocatalytic hydrogen generation rate of the ZnO nanofibers was estimated to be 1031.8 μmol g À 1 h À 1 , which was about 1.5 times higher than that of ZnO nanoparticles. Moreover, the ZnO nanofibers photocatalyst can maintain its 93.2 % H 2 -production rate after five recycle experiments, whereas only 55.8 % for ZnO nanoparticles. This study provides an effective way to solve the energy problem by using solar energy.

show abstract

“…Apart from these, a large number of reports are based on photocatalytic dye degradation to address the issues related to environmental pollution control. Though this field is dominated by semiconductor based materials [30][31][32][33], some Cu based composites have shown their potential towards such reactions [34][35][36]. Akhavan et al [37] have even reported photocatalytic antimicrobial activities of Cu based nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

A facile route to transfer Cu nanoparticles to organic medium for better stabilization and improved photocatalytic activity towards N-formylation reaction

Maity¹,

Chowdhury²,

Bala³

2020

Nanotechnology

Self Cite

View full text Add to dashboard Cite

Cu nanoparticles were prepared in an aqueous phase by means of a simple reduction-route using sodium borohydride as the reducing agent in the presence of ascorbic acid and polyvinylpyrrolidone (PVP). The hydrosol of the Cu nanoparticles deteriorated within a day. It compelled to initiate a scheme to stabilize the nanoparticles for a long period of time. Phase transfer to organic solvents using Benzyldimethylstearylammonium chloride (BDSAC) as a phase transfer agent was found to be an effective path in this respect. BDSAC performed the dual role of dragging the Cu nanoparticles from water to organic solvent and also acted as a capping agent along with PVP for better stabilization of Cu nanoparticles. The organosol of the Cu nanoparticles exhibited excellent stability and promising catalytic activity towards N-formylation reactions on a number of amine substrates in presence of visible green LED light. The yield and reusability of the catalyst were promising. All the samples were thoroughly characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, energy dispersive analysis of x-rays, x-ray photoelectron spectroscopy and thermo gravimetric analysis .

show abstract

Dexterous Route for Synthesis of Hollow Spherical ZnO and ZnO‐Ag Nanocomposite with Superior Photocatalytic Ability

Cited by 5 publications

References 79 publications

Comparative Study of Optical and Chemical Properties of ZnO-Ag Composites Synthesized from Mimosa Pudica and Andrographis Paniculata Extracts

Comparative Study of Optical and Chemical Properties of ZnO-Ag Composites Synthesized from Mimosa Pudica and Andrographis Paniculata Extracts

Electrospun Highly Crystalline ZnO Nanofibers: Super‐Efficient and Stable Photocatalytic Hydrogen Production Activity

A facile route to transfer Cu nanoparticles to organic medium for better stabilization and improved photocatalytic activity towards N-formylation reaction

Contact Info

Product

Resources

About