Polypyrrole reinforced ZIF-67 with modulated facet exposure and billion-fold electrical conductivity enhancement towards robust photocatalytic CO2 reduction

Yuan, Xuzhou; Mu, Qiaoqiao; Xue, Songlin; Su, Yanhui; Zhu, Yan; Sun, Hao; Deng, Zhao; Peng, Yang

doi:10.1016/j.jechem.2020.12.025

Cited by 61 publications

(22 citation statements)

References 40 publications

(44 reference statements)

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“…No obvious diffraction peaks of PPy were observed due to its essential amorphous nature (Figure 1a, S3). The FT‐IR spectrum of PPHK inherited all spectra features from the HKUST‐1, apart from a prominent peak at 1700 cm −1 that is characteristic of the C−N stretching in pyrrole ring (Figure 1b) [13] . The Raman spectrum of PPHK displayed Stokes bands at 1325, 1412, and 1594 cm −1 , which are associated with the C−N and C=C stretching in PPy (Figure S4) [14] .…”

Section: Resultsmentioning

confidence: 90%

A “Blockchain” Synergy in Conductive Polymer‐Filled Metal–Organic Frameworks for Dendrite‐Free Li Plating/Stripping with High Coulombic Efficiency

et al. 2022

Angewandte Chemie

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The performance of lithium‐metal batteries is severely hampered by uncontrollable dendrite growth and volume expansion on the metal anodes. Inspired by the “blockchain” concept in data mining, here we utilize a conductive polymer‐filled metal–organic framework (MOF) as the lithium host, in which polypyrrole (PPy) serves as the “chain” to interlink Li “blocks” stored in the MOF pores. While the N‐rich PPy guides fast Li+ infiltration/extrusion and serves as the nucleation sites for isotropic Li growth, the MOF pores compartmentalize bulk Li deposition for 3D matrix Li storage, leading to low‐barrier and dendrite‐free Li plating/stripping with superb Coulombic efficiency. The as‐fabricated lithium‐metal anodes operate over 700 cycles at 5 mA cm−2 in symmetric cells, and 800 cycles at 1 C in full cells with a per‐cycle capacity loss of only 0.017 %. This work might open a new chapter for Li‐metal anode construction by introducing the concept of “blockchain” management of Li plating/stripping.

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Section: Resultsmentioning

confidence: 90%

A “Blockchain” Synergy in Conductive Polymer‐Filled Metal–Organic Frameworks for Dendrite‐Free Li Plating/Stripping with High Coulombic Efficiency

et al. 2022

Angewandte Chemie

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“…Metal–organic frameworks (MOFs) including other materials have been extensively employed in diverse application areas such as environments, adsorbents, organic light emitting displays, sensors and catalysts [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Among diverse MOFs, the zeolitic imidazolate framework (ZIF) exhibits zeolite-like topologies where imidazolate linkers are connected with tetrahedrally coordinated transition metal ions such as Co and Zn [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. In this ZIF-class, ZIF-67 has Co-N tetrahedral coordination commonly synthesized with Co(II) precursor and 2-methylimidazole [ 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…The developed catalyst showed high light absorption and charge transfer efficiency for higher photocatalytic performance. For an application area of CO 2 reduction [ 25 , 26 , 27 ], CdS/ZIF-67 nanocomposites were synthesized by a simple wet reaction method and tested for photocatalytic CO 2 reduction reaction under a 300 W Xe lamp (with 420 nm cut-off filter) [ 23 ]. The catalysts showed CO and H 2 as the main products, with 184 μmol g −1 ·h −1 and 1098 μmol g −1 h −1 , respectively, and a CO selectivity of 5–45%.…”

Section: Introductionmentioning

confidence: 99%

“…As discussed in the literature, many strategies have been employed and the consequent materials have been tested in various application areas [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Motivated by this, we seek to further widen the synthesis of ZIP-derivatized catalyst materials and examine new physicochemical properties of a newly synthesized material.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, we prepared bean sprout-like Co-TiO 2 /Ti nanostructures by the thermal treatment of ZIF-67/Ti hybrid structure and demonstrated diverse catalytic applications of photocatalytic CO 2 reduction, electrochemical CO 2 reduction and electrochemical oxygen evolution reaction. Although ZIF-derivatized catalyst have been extensively studied for water splitting, few studies have been reported related to CO 2 reduction [ 25 , 26 , 27 ]. Therefore, the present study shows some data sets for catalytic performances on CO 2 reduction.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic and Electrocatalytic Properties of Cu-Loaded ZIF-67-Derivatized Bean Sprout-Like Co-TiO2/Ti Nanostructures

et al. 2021

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ZIF-derivatized catalysts have shown high potential in catalysis. Herein, bean sprout-like Co-TiO2/Ti nanostructures were first synthesized by thermal treatment at 800 °C under Ar-flow conditions using sacrificial ZIF-67 templated on Ti sheets. It was observed that ZIF-67 on Ti sheets started to thermally decompose at around 350 °C and was converted to the cubic phase Co3O4. The head of the bean sprout structure was observed to be Co3O4, while the stem showed a crystal structure of rutile TiO2 grown from the metallic Ti support. Cu sputter-deposited Co-TiO2/Ti nanostructures were also prepared for photocatalytic and electrocatalytic CO2 reduction performances, as well as electrochemical oxygen reaction (OER). Gas chromatography results after photocatalytic CO2 reduction showed that CH3OH, CO and CH4 were produced as major products with the highest MeOH selectivity of 64% and minor C2 compounds of C2H2, C2H4 and C2H6. For electrocatalytic CO2 reduction, CO, CH4 and C2H4 were meaningfully detected, but H2 was dominantly produced. The amounts were observed to be dependent on the Cu deposition amount. Electrochemical OER performances in 0.1 M KOH electrolyte exhibited onset overpotentials of 330–430 mV (vs. RHE) and Tafel slopes of 117–134 mV/dec that were dependent on Cu-loading thickness. The present unique results provide useful information for synthesis of bean sprout-like Co-TiO2/Ti hybrid nanostructures and their applications to CO2 reduction and electrochemical water splitting in energy and environmental fields.

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Highly Sensitive Hybrid Oxide Phototransistors with Photoresponsive Zeolitic‐Imidazolate‐Frameworks for Real‐Time Light Detection

Yang

Jung

Ahn

et al. 2023

Advanced Optical Materials

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Conventional oxide‐based thin‐film phototransistors (Ph‐TRs) with a hybrid structure with additional photoabsorbers show limitations in real‐time on/off operations without additional input bias. Here, hybrid InGaZnO (IGZO) Ph‐TRs utilizing zeolitic‐imidazolate‐framework‐67 (ZIF‐67), an electrically insulating material with a unique metal‐to‐metal charge transfer (MMCT) pathway enabling charge migration, are presented. A wide photodetection range and fast response/recovery speed without additional gate bias are achieved. In particular, ZIF‐67 used as a photoabsorber exhibits absorption of visible light over a wide range of wavelengths. Photoexcited electrons migrate through the MMCT pathway between Co ions and migrate to the IGZO conduction band, causing a significant change in the photocurrent (Iph) of the hybrid ZIF‐67/IGZO Ph‐TR. In the dark, ZIF‐67 immediately returns to the insulating state, resulting in a fast rise/fall time under dynamic photo‐stimulus. In addition, it exhibits repeatable photo‐sensing performance without persistent photocurrent behavior under pulsed light‐on/off cycles. A high photosensitivity of 108 for red light (592 nm, 0.1 mW cm–2) is obtained as it suppresses the dark current and amplifies photocurrent generation in the subthreshold gate voltage region. This combination of fast response time, high photosensitivity, and high stability is promising for ideal Ph‐TRs, enabling real‐time detection even for high‐frequency operations.

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Polypyrrole reinforced ZIF-67 with modulated facet exposure and billion-fold electrical conductivity enhancement towards robust photocatalytic CO2 reduction

Cited by 61 publications

References 40 publications

A “Blockchain” Synergy in Conductive Polymer‐Filled Metal–Organic Frameworks for Dendrite‐Free Li Plating/Stripping with High Coulombic Efficiency

A “Blockchain” Synergy in Conductive Polymer‐Filled Metal–Organic Frameworks for Dendrite‐Free Li Plating/Stripping with High Coulombic Efficiency

Photocatalytic and Electrocatalytic Properties of Cu-Loaded ZIF-67-Derivatized Bean Sprout-Like Co-TiO2/Ti Nanostructures

Highly Sensitive Hybrid Oxide Phototransistors with Photoresponsive Zeolitic‐Imidazolate‐Frameworks for Real‐Time Light Detection

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