Utilizing in-situ polymerization of pyrrole to fabricate composited hollow nanospindles for boosting oxygen evolution reaction

Chen, Yixin; Shen, Lin; Wang, Congcong; Feng, Siyang; Zhang, Nan; Xiang, Siyuan; Feng, Tanglue; Yang, Mingxi; Zhang, Kai

doi:10.1016/j.apcatb.2020.119112

Cited by 30 publications

(7 citation statements)

References 45 publications

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“…55−57 The binding energy of Cd 3d of CS@MF-3 is higher than that of CdS, indicating that the electron density of CdS decreases by the interfacial interaction with MOF-808. 57,58 In order to reveal optical light absorption abilities of the catalysts, UV−vis DRS analysis of composites was performed (Figure 4a). MOF-808 showed no visible-light absorption and the absorption edge was at around 300 nm.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Efficient and Selective Visible-Light-Driven Oxidative Coupling of Amines to Imines in Air over CdS@Zr-MOFs

Gao

Meng

et al. 2021

ACS Appl. Mater. Interfaces

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Construction of porous photoactive MOF-based composite systems is regarded as one of the most effective strategies to improve light harvesting, increase the surface area, provide plenty of exposed active sites, and promote the reduction and oxidation abilities of some organic photocatalytic reactions. Herein, we synthesized porous CdS@Zr-MOF photocatalysts based on the representative photocatalyst CdS and crystalline Zr-MOFs, such as MOF-808, NU-1000, and PCN-222, to illustrate their excellent photocatalytic performance for the synthesis of imines in air. The morphology and composition of these photocatalysts were investigated by X-ray powder diffraction (XRD), inductively coupled plasma-atomic emission spectrometry (ICP-AES), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), indicating their crystallinity, high porosity, and interfacial interaction between constituents. Compared with individual components, these porous CdS@Zr-MOF composites could remarkably promote photocatalytic activity for the oxidative coupling of amines under air and visible-light conditions. The photocatalytic reaction showed broad substrate suitability. More importantly, the conversion yield reached up to 95% for the inactive aliphatic amines, and imines were formed as the single product. The improvement of the photocatalytic performance of CdS@Zr-MOF composites can be mainly ascribed to their high surface areas, more exposed active sites, excellent dispersion of CdS, and special porous photocatalytic systems, which tune the band gap, broaden the light response range, and facilitate the carrier separation.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…The XPS spectrum of Cd 3d exhibits two peaks at 412.08 and 405.31 eV, which are attributed to the B.E. of Cd 3d 3/2 and 3d 5/2 , respectively. − The binding energy of Cd 3d of CS@MF-3 is higher than that of CdS, indicating that the electron density of CdS decreases by the interfacial interaction with MOF-808. , …”

Section: Resultsmentioning

confidence: 99%

Efficient and Selective Visible-Light-Driven Oxidative Coupling of Amines to Imines in Air over CdS@Zr-MOFs

Gao

Meng

et al. 2021

ACS Appl. Mater. Interfaces

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“…The main organic species of organic-inorganic interfaces reported are alkanethiol molecules 72 , ionic surfactants 73 , and polymers. Due to the designability, desirable structures and unique properties, polymers have attracted a lot of attention in electroreduction reactions 74 . When polymers are used for functionalization of materials, the chemical properties such as the type and number of functional groups in the polymer monomers as well as their physical properties will significantly affect their catalytic properties [75][76][77][78][79][80] .…”

Section: Interface Engineering In Co2rr and N2rrmentioning

confidence: 99%

Recent Advances in Defect and Interface Engineering for Electroreduction of CO<sub>2</sub> and N<sub>2</sub>

Chen¹,

Chen²,

Cao³

et al. 2023

Acta Physico Chimica Sinica

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The realization of carbon and nitrogen cycles is an urgent requirement for the development of human society, and is also a hot research topic in the field of catalysis. Electrocatalysis driven by renewable energy has attracted considerable attention, and the target products can be obtained by varying the applied potentials. Accordingly, electrocatalysis is considered to be an effective strategy to alleviate the current energy crisis and environmental problems and is of great significance in realizing carbon neutrality. Electrocatalytic CO2 reduction reaction (CO2RR) and N2 reduction reaction (N2RR) are also promising strategies for the conversion of small molecules. However, the high dissociation energies of the C＝O and N≡N bonds in the linear molecules of CO2 and N2, respectively, lead to their high chemical inactivity. In addition, the large energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) further results in high chemical stability. Besides, the low proton affinity of CO2 and N2 makes direct protonated difficult. However, because of the similar redox potentials of CO2RR, N2RR, and hydrogen evolution reaction (HER), HER competes with CO2RR and N2RR, affecting the CO2RR and N2RR performance. Therefore, both CO2RR and N2RR still face challenges, such as high overpotential and low Faradaic efficiency. To overcome these bottlenecks, considerable efforts have been made to improve the performance of the CO2RR and N2RR electrocatalysts. The electrocatalytic process primarily occurs on the catalyst surface and involves mass diffusion and electron transfer; thus, the performance of the catalysts is closely related to their mass and electron transfer abilities. Modulating the catalyst surface structure can regulate the mass and electron transfer behavior of the active sites during the electrocatalytic process. Defect and interface engineering of electrocatalysts is important for enhancing the adsorption of gas, inhibiting HER, enriching the gas, stabilizing the intermediates, and modifying the electronic structure by engineering the surface atoms. To date, various defective and composite electrocatalysts have shown great potential to enhance the CO2RR and N2RR performance. Herein, recent advances in defect and interface engineering for CO2RR and N2RR are reviewed. The effects of four different defects (vacancy, high-index facet, lattice stain, and lattice disorder) on the CO2RR and N2RR performance are discussed. Then, the main roles of interface engineering of polymer-inorganic composite catalysts are further reviewed, and representative examples are presented. Finally, the opportunities and challenges for defect and interface engineering in the electroreduction of CO2 and N2 are also proposed, suggesting directions for the future development of highly efficient CO2RR and N2RR catalysts.

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“…Because of the tunable electronic structure, the NiFeP catalysts' performance in the HER and OER can be enhanced after partially substituting P with S. The valence electron configuration of Fe 3+ , according to crystal field theory, is 3d 5 with a high-spin state (Figure 11d). FeCoNiP@C/NF, an effective bifunctional electrocatalyst, was produced by Zhang et al 122 , Chen et al 123 produced novel inorganic/polymer composited hollow nano spindles made of polypyrrole (PPy) and Fe−Ni (oxy)hydroxides (FeNi-PPy HNSs) (FeNi) by using in situ polymerization on MIL-88. FeNi-PPy HNSs do not require high-temperature sintering to be used directly as an electrocatalyst for OER.…”

Section: Mof-based Electrocatalystsmentioning

confidence: 99%

Recent Progress on Nickel- and Iron-Based Metallic Organic Frameworks for Oxygen Evolution Reaction: A Review

Lakhan,

Hanan,

Wang

et al. 2024

Langmuir

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Developing sustainable energy solutions to safeguard the environment is a critical ongoing demand. Electrochemical water splitting (EWS) is a green approach to create effective and long-lasting electrocatalysts for the water oxidation process. Metal organic frameworks (MOFs) have become commonly utilized materials in recent years because of their distinguishing pore architectures, metal nodes easy accessibility, large specific surface areas, shape, and adaptable function. This review outlines the most significant developments in current work on developing improved MOFs for enhancing EWS. The benefits and drawbacks of MOFs are first discussed in this review. Then, some cutting-edge methods for successfully modifying MOFs are also highlighted. Recent progress on nickel (Ni) and iron (Fe) based MOFs have been critically discussed. Finally, a comprehensive analysis of the existing challenges and prospects for Ni-and Fe-based MOFs are summarized.

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Utilizing in-situ polymerization of pyrrole to fabricate composited hollow nanospindles for boosting oxygen evolution reaction

Cited by 30 publications

References 45 publications

Efficient and Selective Visible-Light-Driven Oxidative Coupling of Amines to Imines in Air over CdS@Zr-MOFs

Efficient and Selective Visible-Light-Driven Oxidative Coupling of Amines to Imines in Air over CdS@Zr-MOFs

Recent Advances in Defect and Interface Engineering for Electroreduction of CO<sub>2</sub> and N<sub>2</sub>

Recent Progress on Nickel- and Iron-Based Metallic Organic Frameworks for Oxygen Evolution Reaction: A Review

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