Mesoporous oxidic holey nanosheets from Zn-Cr LDH synthesized by soft chemical etching of Cr3+ and its application as CO2 hydrogenation catalyst

Saikia, Prakash J.; Saikia, Jitu; Sarmah, Susmita; Allou, N’guadi Blaise; Goswamee, Rajib Lochan

doi:10.1016/j.jcou.2017.06.017

Cited by 15 publications

(5 citation statements)

References 63 publications

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“…In theory, the increase of specific surface area may provide more active sites for the adsorption reaction. 44 3.4 Morphology and structure analysis…”

Section: Bet Surface Area Analysis and Pore Structure Analysismentioning

confidence: 99%

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

Zhao

Wang

et al. 2022

New J. Chem.

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“…In theory, the increase of specific surface area may provide more active sites for the adsorption reaction. 44 3.4 Morphology and structure analysis…”

Section: Bet Surface Area Analysis and Pore Structure Analysismentioning

confidence: 99%

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

Zhao

Wang

et al. 2022

New J. Chem.

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“…The electrocatalytic conversion of CO 2 to CO is a key reaction in the CO 2 catalytic system so that catalysts play a key role in selectivity. At present, noble metal-based catalysts such as gold, silver, and palladium , as well as non-noble metal catalysts such as zinc and copper − have been widely studied. Recently, molecular catalysts such as CoPc have been used in electrocatalytic hydrogen evolution and synthesis of several organic matters, − which have clear active centers and easy-to-control structures .…”

Section: Introductionmentioning

confidence: 99%

High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor

Zhang

Bai

Zhang

et al. 2021

Environ. Sci. Technol.

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H2S and CO2 are the main impurities in raw natural gas, which needs to be purified before use. However, the comprehensive utilization of H2S and CO2 has been ignored. Herein, we proposed a fully resource-based method to convert toxic gas H2S and greenhouse gas CO2 synchronously into CO and elemental S by using a novel electrochemical reactor. The special designs include that, in the anodic chamber, H2S was oxidized rapidly to S based on the I–/I3 – cyclic redox system to avoid anode passivation. On the other hand, in the cathodic chamber, CO2 was rapidly and selectively reduced to CO based on a porous carbon gas diffusion electrode (GDE) modified with polytetrafluoroethylene and cobalt phthalocyanine (CoPc). A high Faraday efficiency (>95%) toward CO was achieved due to the enhanced mass transfer of CO2 on the GDE and the presence of the selective CoPc catalyst. The maximum energy efficiency of the system was more than 72.41% with a current density of over 50 mA/cm2, which was 12.5 times higher than what was previously reported on the H2S treatment system. The yields of S and CO were 24.94 mg·cm–2·h–1 and 19.93 mL·cm–2·h–1, respectively. A model analysis determined that the operation cost of the synchronous utilization of H2S and CO2 method was slightly lower than that of the single utilization of H2S in the existing natural gas purification technology. Overall, this paper provides efficient and simultaneous conversion of H2S and CO2 into S and CO.

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“…Layered double hydroxides (LDHs) are 2D nanomaterials consisting of positively charged metal hydroxide sheets with interlaminar anions and water molecules. [17,18] The general formula of LDHs could be represented by…”

Section: Introductionmentioning

confidence: 99%

“…Layered double hydroxides (LDHs) are 2D nanomaterials consisting of positively charged metal hydroxide sheets with interlaminar anions and water molecules [17,18] . The general formula of LDHs could be represented by

[M_{1 - x}^{2 +} M_{normalx}^{3 +}({O H)}_{2} {]​}^{x +} (A^{n -} {)​}_{x / n} \cdot m {normalH}_{2} O

, where M 2+ and M 3+ are divalent and trivalent cations, x is defined as the M 3+ /(M 2+ +M 3+ ) ratio, usually in the range of 0.2∼0.33 [19] .…”

Section: Introductionmentioning

confidence: 99%

Layered Double Oxides for Sensing Reducing Volatile Organic Compounds: The Effect of Local Charge Region Modulation

Qin

Xia

et al. 2021

ChemPlusChem

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Multi-metal oxides with uniform distribution of various metal elements have potential for an enhanced gas-sensing response due to the strong heterogeneous and synergistic effects involved. In this study, three layered double oxides, labeled as CuCr-, ZnCr-, and ZnTi-LDOs, respectively, were prepared with corresponding LDHs (layered double hydroxides) as precursors and self-sacrificial templates. The elemental mapping confirms the uniform distribution of hetero-metal elements in whole LDOs. The CuCr-LDOs exhibits a much larger sensing response towards reducing VOCs at room temperature, which is 3.5 or 13.3 times that of ZnCr-or ZnTi-LDOs, respectively. The response differences are analyzed in terms of the local charge region modulation associated with heterojunction formation, and it is further demonstrated based on first-principles calculations and valence electron theory. The present work suggests a possible strategy for developing highly sensitive oxide-based gas sensors for VOCs detection.

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Mesoporous oxidic holey nanosheets from Zn-Cr LDH synthesized by soft chemical etching of Cr3+ and its application as CO2 hydrogenation catalyst

Cited by 15 publications

References 63 publications

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor

Layered Double Oxides for Sensing Reducing Volatile Organic Compounds: The Effect of Local Charge Region Modulation

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Mesoporous oxidic holey nanosheets from Zn-Cr LDH synthesized by soft chemical etching of Cr3+ and its application as CO2 hydrogenation catalyst

Cited by 15 publications

References 63 publications

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

The structural feature of Ni–Al-LDH nanosheets and their adsorption performance for ethyl mercaptan from methane gas

High Yield of CO and Synchronous S Recovery from the Conversion of CO2 and H2S in Natural Gas Based on a Novel Electrochemical Reactor

Layered Double Oxides for Sensing Reducing Volatile Organic Compounds: The Effect of Local Charge Region Modulation

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Product

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High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor