Palladium nanoparticles decorated on amine functionalized graphene nanosheets as excellent nanocatalyst for the hydrogenation of nitrophenols to aminophenol counterparts

Soğukömeroğulları, Hatice Gamze; Karataş, Yaşar; Çelebı, Metın; Gülcan, Mehmet; Sönmez, Mehmet; Zahmakıran, Mehmet

doi:10.1016/j.jhazmat.2019.02.027

Cited by 55 publications

(29 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 5 A, the XPS spectrum of Pd 3d has doublet peaks that could be deconvoluted to four peaks, two main peaks centered at 333.3 and 338.4 eV matching with Pd 3d 5/2 and Pd 3d 3/2 of metallic Pd, and two weak peaks centered at 334.9 and 341.4 eV matching with Pd(II) 3d 5/2 and Pd(II) 3d 3/2 of palladium oxide (PdO). 41 However, for AgNPs/TiO 2 /Ti 3 C 2 T x , the Ag ions were reduced to metallic Ag without producing silver oxides, which could boost the oxidation of MXene and the formation of TiO 2 crystals. The Ag 3d XPS spectrum of AgNPs/TiO 2 /Ti 3 C 2 T x showed distinct peaks at 365.7 and 371.7 eV, which were assigned to Ag 3d 5/2 and Ag 3d 3/2 peaks, respectively, indicating the successful self-reduction of Ag nanoparticles on the MXene surface ( Figure 5 B).…”

Section: Results and Discussionmentioning

confidence: 99%

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

et al. 2021

View full text Add to dashboard Cite

Due to their broad applications in various industrial activities, and their well-known negative impacts on the aquatic environment, organic dyes have been continuously identified as serious threat to the quality of ecosystems. The photocatalytic degradation process in aqueous solutions has emerged as an efficient and reliable approach for the removal of organic dyes. MXenes, a new class of two-dimensional (2D) nanomaterials, possess unique chemical composition, surface functionalities, and physicochemical properties. Such characteristics enable MXenes to act as efficient catalysts or cocatalysts to photodegrade organic molecules. This work explores the application of Ti 3 C 2 T x MXene decorated with silver and palladium nanoparticles, using a simple hydrothermal treatment method, for the photocatalytic degradation of methylene blue (MB) and rhodamine B (RhB). The chemical composition of these photocatalysts, as well as their structural properties and morphology, was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. The photocatalytic degradation abilities of the pristine MXene and the synthesized MXene composites were investigated under ultraviolet and solar light irradiation. A significant improvement in the photocatalytic performances was observed for all oxidized MXene composites when compared to pristine MXene, with a superior degradation efficiency achieved for AgNPs/TiO 2 /Ti 3 C 2 T x . This work broadens the application range of oxidized MXene composites, providing an alternative material for degrading organics dyes and wastewater treatment applications.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

et al. 2021

View full text Add to dashboard Cite

show abstract

“…48,49 It is commonly found in wastewaters of industries that manufacture pesticide, dye, pharmaceutical, and petrochemical products. 50 Aminophenol is an important intermediate in the preparation of several analgesics and antipyretic drugs. 51,52 It is a strong reducing agent, and it is used as a corrosion inhibitor in paints as well as photographic development.…”

Section: Electrical Properties Of Atgo and Au/atgo Compositementioning

confidence: 99%

Application of electroactive Au/aniline tetramer–graphene oxide composites as a highly efficient reusable catalyst

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Many researchers world over are working on converting nitroaromatics to amino aromatics using a variety of methods. [4][5][6] The conversion of nitro aromatic compounds into value added products using NaBH 4 as a reducing agent is a simple, fast, and environmentally friendly way to remove them from effluents. [3] Numerous nanocatalysts have been produced and tested for the nitrophenol reduction reaction.…”

Section: Introductionmentioning

confidence: 99%

“…With all the risks of using nitrophenol, it is important to degrade/remove nitrophenol and/or reuse it by turning it into some value‐added chemical product. Many researchers world over are working on converting nitroaromatics to amino aromatics using a variety of methods [4–6] . The conversion of nitro aromatic compounds into value added products using NaBH 4 as a reducing agent is a simple, fast, and environmentally friendly way to remove them from effluents [3] .…”

Section: Introductionmentioning

confidence: 99%

Magnetically Separable Zn_1‐xCu_0.5xMg_0.5xFe₂O₄ Ferrite: A Stable Catalyst for Reduction of 4‐Nitrophenol

et al. 2022

View full text Add to dashboard Cite

Spinel ferrites have recently received significant attention due to their high potential for environmental remediation. We herein report highly stable Cu−Mg substituted zinc ferrites, which were achieved for the first time using a sonochemical method. The phase purity and chemical composition of as‐synthesized ferrites were confirmed by using X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). The size, shape, magnetic properties, and morphology of ferrites were characterized by using Transmission electron microscopes (TEM), Energy Dispersive X‐Ray Analysis (EDX), and Vibrating Sample Magnetometer (VSM). The catalytic performance of the synthesized ferrite was observed in the reduction of aqueous 4‐nitrophenol to 4‐aminophenol with NaBH4. The maximal reduction attained by the Zn1‐xCu0.5xMg0.5xFe2O4 nanoferrite (1.5 min) was significantly impactful than that of other ferrites. The rate constant for the reduction of 4‐nitrophenol was determined to be 0.502 min−1, which was higher than previously reported literature values, and the reduction followed pseudo first‐order kinetics. The cation distribution, crystallinity, and morphology of Zn1‐xCu0.5xMg0.5xFe2O4 were found to be responsible for its higher catalytic activity. Further, this research has the potential to be useful in environmental remediation and offers new findings on mixed ferrite.

show abstract

Palladium nanoparticles decorated on amine functionalized graphene nanosheets as excellent nanocatalyst for the hydrogenation of nitrophenols to aminophenol counterparts

Cited by 55 publications

References 66 publications

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

Application of electroactive Au/aniline tetramer–graphene oxide composites as a highly efficient reusable catalyst

Magnetically Separable Zn_1‐xCu_0.5xMg_0.5xFe₂O₄ Ferrite: A Stable Catalyst for Reduction of 4‐Nitrophenol

Contact Info

Product

Resources

About

Palladium nanoparticles decorated on amine functionalized graphene nanosheets as excellent nanocatalyst for the hydrogenation of nitrophenols to aminophenol counterparts

Cited by 55 publications

References 66 publications

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO2/Ti3C2Tx MXene Composites under UV and Solar Light

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO2/Ti3C2Tx MXene Composites under UV and Solar Light

Application of electroactive Au/aniline tetramer–graphene oxide composites as a highly efficient reusable catalyst

Magnetically Separable Zn1‐xCu0.5xMg0.5xFe2O4 Ferrite: A Stable Catalyst for Reduction of 4‐Nitrophenol

Contact Info

Product

Resources

About

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

Efficient Photocatalytic Degradation of Organic Dyes by AgNPs/TiO₂/Ti₃C₂T_x MXene Composites under UV and Solar Light

Magnetically Separable Zn_1‐xCu_0.5xMg_0.5xFe₂O₄ Ferrite: A Stable Catalyst for Reduction of 4‐Nitrophenol