Ag-modified TiO2/SiO2/Fe3O4 sphere with core-shell structure for photo-assisted reduction of 4-nitrophenol

Ningsih, Lely Ayu; Yoshida, Masaaki; Sakai, Arisu; Lin, Kun‐Yi Andrew; Wu, Kevin C.‐W.; Catherine, Hepsiba Niruba; Ahamad, Tansir; Hu, Chechia

doi:10.1016/j.envres.2022.113690

Cited by 22 publications

(2 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, similar to heterogeneous composites, researchers have utilized various TiO 2 composites with other ferrites and non-ferrites NPs. [14] For example, Ningsih et al [15] fabricated core-shell structured Ag-loaded TiO 2 À SiO 2 À Fe 3 O 4 for the photo-assisted reduction of PNP using a metal halide lamp. The results showed that the synthesized catalyst demonstrated good catalytic activity for the photocatalytic reduction of PNP.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploring Spherical‐Shaped Catalysts: Synthesis and Characterization for Efficient Hydrogenation of para‐Nitrophenol

As,

Arsalani,

Naghash‐Hamed

2023

ChemistrySelect

View full text Add to dashboard Cite

This study reports the synthesis and properties of two types of nanoparticles, TiO2 and CuFe2O4, using sol‐gel and hydrothermal methods, respectively. The CuFe2O4 nanoparticles were loaded onto carbon quantum dots (CQDs) and TiO2 nanoparticles using the co‐precipitation method. Characterization of the nanoparticles and nanocomposites was carried out using FT‐IR, XRD, SEM, EDXS, PL, DRS, and UV‐Vis analyses. The FT‐IR spectra of the nanomaterials showed changes in intensity, indicating successful synthesis of the nanocomposites. The CuFe2O4@CQDs nanocomposite exhibited a distinct peak at 2θ=21° in the XRD pattern, corresponding to the diffraction of [002] planes. The CuFe2O4@CQDs nanocomposite demonstrated high activity in the hydrogenation of para‐nitrophenol (PNP) with a conversion efficiency of para‐aminophenol (PAP) of approximately 99.44 %. Its performance surpassed that of bare TiO2 and CuFe2O4 nanoparticles due to the significant effect of CQDs. The observed rate constant for the hydrogenation reaction was 0.845 (s−1), with a reduction time of 7 seconds. Moreover, the magnetic nanocatalyst was easily separated from the reaction solution and recycled for up to 6 consecutive cycles without significant loss of catalytic activity, a mere from 99.44 to 92.8 % after 6 uses. The synthesis process was straightforward and required minimal effort and time.

show abstract

Section: Introductionmentioning

confidence: 99%

“…However, similar to heterogeneous composites, researchers have utilized various TiO 2 composites with other ferrites and non‐ferrites NPs [14] . For example, Ningsih et al [15] . fabricated core‐shell structured Ag‐loaded TiO 2 −SiO 2 −Fe 3 O 4 for the photo‐assisted reduction of PNP using a metal halide lamp.…”

Section: Introductionmentioning

confidence: 99%

Exploring Spherical‐Shaped Catalysts: Synthesis and Characterization for Efficient Hydrogenation of para‐Nitrophenol

As,

Arsalani,

Naghash‐Hamed

2023

ChemistrySelect

View full text Add to dashboard Cite

show abstract

Functionalized agarose hydrogel with in situ Ag nanoparticles as highly recyclable heterogeneous catalyst for aromatic organic pollutants

Wang

Zhang

Song

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

In the present research work, a highly recyclable catalyst of Ag-based agarose (HRC-Ag/Agar) hydrogel was successfully fabricated through a simple and e cient in situ reduction method without the aid of additional surface active agent. The interaction between the rich -OH groups in agarose and the Ag nanoparticles can effectively control the growth and dispersion of Ag nanoparticles in the HRC-Ag/Agar hydrogel. Moreover, HRC-Ag/Agar hydrogel without freeze drying and calcination can be directly used as a highly active catalysts in reducing aromatic organic pollutants (4-NP, RhB and MB) by KBH 4 . HRC-Ag/Agar hydrogel also show great advantages in separation and reusability of catalysts due to Ag attach to the agarose toughly via the interaction between Ag NPs and -OH groups and the chemical reactant has no signi cant damage to the Ag NPs, which can maintain high catalytic e ciency with no signi cant loss during ten cycles testing. The advantages of simple synthetic procedure, no secondary pollution, strong stability and the product easily separated make the HRC-Ag/Agar hydrogel have great potential prospect for environmental applications. The successful synthesis of the material was con rmed through SEM, EDS, XRD, Raman and FTIR techniques.

show abstract

Graphene Oxide Nanocomposites for the Photodegradation of Phenol Derivatives and Pharmaceutical Active Compounds

Min,

Pattnaik,

Ghosh

et al. 2024

Reference Module in Materials Science and Materials Engineering

View full text Add to dashboard Cite

Ag-modified TiO2/SiO2/Fe3O4 sphere with core-shell structure for photo-assisted reduction of 4-nitrophenol

Cited by 22 publications

References 56 publications

Exploring Spherical‐Shaped Catalysts: Synthesis and Characterization for Efficient Hydrogenation of para‐Nitrophenol

Exploring Spherical‐Shaped Catalysts: Synthesis and Characterization for Efficient Hydrogenation of para‐Nitrophenol

Functionalized agarose hydrogel with in situ Ag nanoparticles as highly recyclable heterogeneous catalyst for aromatic organic pollutants

Graphene Oxide Nanocomposites for the Photodegradation of Phenol Derivatives and Pharmaceutical Active Compounds

Contact Info

Product

Resources

About