Fabrication of Three-Dimensional (3D) Raspberry-Like Copper Chromite Spinel Catalyst in a Facile Hydrothermal Route and Its Activity in Selective Hydroxylation of Benzene to Phenol

Acharyya, S.; Ghosh, Shilpi; Bal, Rajaram

doi:10.1021/am503722t

Cited by 58 publications

(53 citation statements)

References 54 publications

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“…Moreover, no obvious diffraction peaks of GO or carbon were detected, which indicate that GO was completely converted into rGO after heat treatment at 180 °C for 3 h. The FT-IR spectra of CCO versus CCO@RGO and GO versus RGO are displayed in Fig. S3a, b [37, 43]. It can be observed that the FT-IR spectra are very similar to the CCO@rGO nanocomposite and CCO nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Liu

Zhao

et al. 2017

Nano-Micro Lett.

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Rechargeable lithium–oxygen batteries have been considered as a promising energy storage technology because of their ultra-high theoretical energy densities which are comparable to gasoline. In order to improve the electrochemical properties of lithium–oxygen batteries (LOBs), especially the cycling performance, a high-efficiency cathode catalyst is the most important component. Hence, we aim to demonstrate that CuCr2O4@rGO (CCO@rGO) nanocomposites, which are synthesized using a facile hydrothermal method and followed by a series of calcination processes, are an effective cathode catalyst. The obtained CCO@rGO nanocomposites which served as the cathode catalyst of the LOBs exhibited an outstanding cycling performance for over 100 cycles with a fixed capacity of 1000 mAh g−1 at a current density of 200 mA g−1. The enhanced properties were attributed to the synergistic effect between the high catalytic efficiency of the spinel-structured CCO nanoparticles, the high specific surface area, and high conductivity of the rGO. Electronic supplementary materialThe online version of this article (10.1007/s40820-017-0175-z) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Liu

Zhao

et al. 2017

Nano-Micro Lett.

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“…So, a general and simple strategy is highly desirable for synthesis of supported nanostructure materials. During last few years, our group is engaged in developing surfactant induced preparation of Cu, Ag and Pt based nanomaterials supported on different nanostructured oxides like Cr 2 O 3 , WO 3 , CeO 2 , Mn 3 O 4 , etc in a single preparation method . We report here highly dispersed Ni‐nanoparticles supported on nanocrystalline ZrO 2 in a single preparation method for chemoselective hydrogenation of nitroarenes, at 60 °C under 1.0 MPa H 2 in water .…”

Section: Introductionmentioning

confidence: 99%

Surfactant‐Induced Preparation of Highly Dispersed Ni‐Nanoparticles Supported on Nanocrystalline ZrO₂for Chemoselective Reduction of Nitroarenes

et al. 2018

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Metal-support interaction plays crucial role in heterogeneous catalysis, stabilizing the active metal species during catalysis. We report here the successful preparation of highly dispersed nickel nanoparticles supported ZrO 2 nanocrystals, which showed excellent performance toward catalytic reduction of nitroarenes to their corresponding amines, where metalsupport interaction plays the key role in enhancing the activity and stability of catalyst. The catalyst was synthesized by a single step hydrothermal method using CTAB (cetyltrimethyl ammonium bromide) as a structure-directing agent and PVP (Polyvinylpyrrolidone) as capping agent. Prepared catalyst was characterized by BET-surface area, Inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), Fourier transform infra-red (FT-IR) spectroscopy, RAMAN spectroscopy, Thermogravimetric analysis (TGA-DTA), UV-vis spectroscopy and Extended X-ray absorption fine structure (EXAFS) analysis. Results obtained from XRD and TPR analysis of 4.9% Ni-ZrO 2 , support the presence of highly dispersed and subtle Ni (below 5 nm) nanoparticles supported on nanocrystalline ZrO 2 . Prepared 4.9 wt% Ni-ZrO 2 catalyst showed 100% conversion of p-nitrophenol with > 99% selectivity to p-aminophenol in aqueous medium at 60 8C, in presence of molecular H 2 (1.0 MPa). Superior activity of 4.9% Ni-ZrO 2 was due to presence of very small (below 5 nm), uniformly distributed, highly dispersed nickel nanoparticle having good metal-support interaction. Prepared 4.9% Ni-ZrO 2 catalyst was recycled up to eight successive runs without any significant loss in catalytic activity.

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“…With the development of nanoscience and nanotechnology, nanostructured materials have been attracted much more researchers' attention in the fields of catalytic materials [1] and gas-sensing materials [2], especially in electrochemical energy storage and conversion materials [3]. In addition, transition metal oxides have been gradually applied as important components for electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

Wang

et al. 2016

Ceramics International

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Fabrication of Three-Dimensional (3D) Raspberry-Like Copper Chromite Spinel Catalyst in a Facile Hydrothermal Route and Its Activity in Selective Hydroxylation of Benzene to Phenol

Cited by 58 publications

References 54 publications

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Surfactant‐Induced Preparation of Highly Dispersed Ni‐Nanoparticles Supported on Nanocrystalline ZrO₂for Chemoselective Reduction of Nitroarenes

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

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Fabrication of Three-Dimensional (3D) Raspberry-Like Copper Chromite Spinel Catalyst in a Facile Hydrothermal Route and Its Activity in Selective Hydroxylation of Benzene to Phenol

Cited by 58 publications

References 54 publications

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Surfactant‐Induced Preparation of Highly Dispersed Ni‐Nanoparticles Supported on Nanocrystalline ZrO2for Chemoselective Reduction of Nitroarenes

Facile synthesis of NiMn 2 O 4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors

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Surfactant‐Induced Preparation of Highly Dispersed Ni‐Nanoparticles Supported on Nanocrystalline ZrO₂for Chemoselective Reduction of Nitroarenes