Supporting a Cu@In2O3 core–shell structure on N-doped graphitic carbon cuboctahedral cages for efficient photocatalytic homo-coupling of terminal alkynes

Yuan, Yaya; Wang, Ya-Qun; Zhuang, Guilin; Li, Qiuyan; Yang, Feng; Wang, Xiaojun; Han, Xijiang

doi:10.1039/d1ta08075j

Cited by 13 publications

(3 citation statements)

References 45 publications

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“…While in the C 1s (Fig. 2f) high-resolution spectrum, the bonds of C-C/C＝C, C-N, C-O, and C＝O coexist, which probably originate from the pyridine and residual groups on the surface of rGO 46,47 .…”

Section: Resultsmentioning

confidence: 99%

RGO-Coated MOF-Derived In2Se3 as a High-Performance Anode for Sodium-Ion Batteries

Lv¹,

Wang²,

Yu³

et al. 2022

Acta Physico Chimica Sinica

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MOF-derived metal selenides are promising candidates as effective anode materials in sodium-ion batteries (SIBs) owing to their ordered carbon skeleton structure and the high conductivity of selenides. They can be imparted with rapid electron/ion transport channels for the insertion/de-insertion of Na + . In this study, MOFderived In2Se3 was prepared as an anode material for SIBs. However, the large volume expansion during cycling leads to structural collapse, which affects the charging and discharging circulation life of the battery. To address this, a two-dimensional rGO network was introduced on the MOF-derived In2Se3 surface by surface modification. Field-emission scanning electron microscopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS) results confirmed the successful synthesis of the In2Se3@C/rGO composite. The structures with two types of carbon enhanced the charge transfer kinetics and provided two stress-buffering layers. Thus, the volume change could be accommodated and simultaneously, electron transfer was accelerated. This technique was effective, as proved by the enhanced capacity retention of 95.2% at 1 A•g −1 after 500 cycles. In contrast, the capacity retention of the MOF-derived material without rGO was only 74.2%. Additionally, due to the synergistic effect of the rGO network and the MOF-derived In2Se3, the anode showed a superior capacity of 468 mAh•g −1 at 0.1 A•g −1 . Conversely, at the same current density, the uncoated material delivered only a capacity of 393 mAh•g −1 . To study the electrochemical process of the electrode, the In2Se3@C/rGO electrode was subjected to cyclic voltammetry (CV) measurements; the results showed that the In2Se3@C/rGO electrode had notable electrochemical reactivity. In addition, in situ X-ray diffraction (XRD) was performed to explore the sodium storage mechanism of In2Se3, demonstrating that In2Se3 had a dual Na + storage mechanism involving conversion and alloying reactions, and revealing the origin of its high theoretical specific capacity. This study is expected to serve as a reference for preparing optimized rGO-based materials for use as SIB anodes.

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Section: Resultsmentioning

confidence: 99%

RGO-Coated MOF-Derived In2Se3 as a High-Performance Anode for Sodium-Ion Batteries

Lv¹,

Wang²,

Yu³

et al. 2022

Acta Physico Chimica Sinica

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“…Conjugated 1,3-diynes are widely used in drug synthesis and the preparation of some organic materials, and also exist in natural products. [1][2][3] In recent years, the synthesis of symmetric and asymmetric 1,3-diynes have been widely concerned. [4][5][6][7] Great progress has been made in obtaining highly active 1,3diynes reactions with copper based catalyst systems.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Conversion of Homocoupling and Heterocoupling of Terminal Alkynes Catalyzed by AuCu₂₄/AC‐200

Sun

Yun

et al. 2023

Eur J Inorg Chem

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Regulation of Hybrid Materials of Ministry of Education, Bimetallic nanoclusters with synergistic effect exhibit better stability and activity than monometallic nanoclusters in catalytic applications. However, the large number of ligands on the surface of nanoclusters obscure the active sites, thus reducing the catalytic activity. Here, AuCu24/AC−X (X=0, 200, 300, 500, 800) catalysts were fabricated by removing the partial ligands on the surface of AuCu24H22((p‐FPh)3P)12 nanoclusters (short for AuCu24 NCs), and investigated the influence of calcination temperature on catalytic performance of AuCu24/AC in homocoupling and heterocoupling of terminal alkynes. The results showed that the catalytic activity of AuCu24/AC−X exhibited a volcanic trend with the increase of X (heat treatment temperature) and the content of Cu2+ also changed with the increase of X. Compared with Au25/AC‐200 and Cu25/AC‐200 catalysts, the AuCu24/AC‐200 bimetallic catalyst showed the highest catalytic activity in homocoupling and heterocoupling of terminal alkynes under mild conditions with TOF values reaching 478.7 h−1 and 114.1 h−1 respectively, which are higher than most reported catalysts. This work provides a research idea for the design of bimetallic nanoclusters with superior performance.

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“…These modifications can regulate the adsorption of reactants, formation of reaction intermediates, and dissociation of products, thus influencing the efficiency and selectivity of catalytic reactions. 25,27…”

Section: Introductionmentioning

confidence: 99%

Engineering cuboctahedral N-doped C-coated p-CuO/n-TiO₂ heterojunctions toward high-performance photocatalytic cross-dehydrogenative coupling

et al. 2023

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Supporting a Cu@In₂O₃ core–shell structure on N-doped graphitic carbon cuboctahedral cages for efficient photocatalytic homo-coupling of terminal alkynes

Abstract: Improving the separation efficiency of photogenerated carriers and exposing more active sites are two important factors to improve photocatalytic efficiency of photocatalyst. Designing appropriate materials with special structure and composition...

Cited by 13 publications

References 45 publications

RGO-Coated MOF-Derived In<sub>2</sub>Se<sub>3</sub> as a High-Performance Anode for Sodium-Ion Batteries

RGO-Coated MOF-Derived In<sub>2</sub>Se<sub>3</sub> as a High-Performance Anode for Sodium-Ion Batteries

Highly Efficient Conversion of Homocoupling and Heterocoupling of Terminal Alkynes Catalyzed by AuCu₂₄/AC‐200

Engineering cuboctahedral N-doped C-coated p-CuO/n-TiO₂ heterojunctions toward high-performance photocatalytic cross-dehydrogenative coupling

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Supporting a Cu@In2O3 core–shell structure on N-doped graphitic carbon cuboctahedral cages for efficient photocatalytic homo-coupling of terminal alkynes

Abstract: Improving the separation efficiency of photogenerated carriers and exposing more active sites are two important factors to improve photocatalytic efficiency of photocatalyst. Designing appropriate materials with special structure and composition...

Cited by 13 publications

References 45 publications

RGO-Coated MOF-Derived In<sub>2</sub>Se<sub>3</sub> as a High-Performance Anode for Sodium-Ion Batteries

RGO-Coated MOF-Derived In<sub>2</sub>Se<sub>3</sub> as a High-Performance Anode for Sodium-Ion Batteries

Highly Efficient Conversion of Homocoupling and Heterocoupling of Terminal Alkynes Catalyzed by AuCu24/AC‐200

Engineering cuboctahedral N-doped C-coated p-CuO/n-TiO2 heterojunctions toward high-performance photocatalytic cross-dehydrogenative coupling

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Supporting a Cu@In₂O₃ core–shell structure on N-doped graphitic carbon cuboctahedral cages for efficient photocatalytic homo-coupling of terminal alkynes

Highly Efficient Conversion of Homocoupling and Heterocoupling of Terminal Alkynes Catalyzed by AuCu₂₄/AC‐200

Engineering cuboctahedral N-doped C-coated p-CuO/n-TiO₂ heterojunctions toward high-performance photocatalytic cross-dehydrogenative coupling