Catalytic reduction of CO2 by Al–Sn-CNTs composite for synthesizing formic acid

Guo, Jinrui; Tian, Jing; Deng, Jinhua; Yang, Xinyu; Duan, Binghui; Liu, Yong

doi:10.1016/j.ijhydene.2021.06.152

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…In a previous report, a very low production of formate was obtained in the CNTs/CO 2 system, indicating that CO 2 reduction by CNTs alone was poor. The FE to formate for the thinnest CNT/WS 2 (50) sample gradually increased with the applied potential.…”

Section: Resultsmentioning

confidence: 79%

“…The exact mechanism to obtain this product is not yet fully understood. It has been reported, however, that the mechanism involves many steps and might also result in CO and H 2 O production instead of the desired formate product . Tests were performed on CNT/WS 2 (50), CNT/WS 2 (200), and CNT/WS 2 (300)-based electrodes in chronoamperometry (CA) mode under different potentials (−0.4, −0.6, and −0.8 V vs RHE) for 1.5 h. Before each test, the system was stabilized through a series of CV conducted up to the potential used for CA; furthermore, the capacitance was measured through the double-layer technique.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Gas Sensing and Electrochemical Properties of CNT/WS₂ Core–shell Nanostructures

Zribi,

Crispi,

Giusi

et al. 2024

ACS Appl. Nano Mater.

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Tungsten disulfide (WS 2 ) layers with different thicknesses were deposited on carbon nanotubes (CNTs) by atomic layer deposition (ALD) to obtain CNT/WS 2 core−shell heteronanostructures. WS 2 conformally grows like small platelet-flakes on the CNTs initially at low ALD cycles, while, with increasing the number of ALD cycles, WS 2 platelets further grow to form a continuous film. The electrical and electrochemical properties of the synthesized CNT/WS 2 hierarchical heterostructures were evaluated for sensing and electrocatalysis applications. First, a CNT/WS 2 conductometric sensor was developed for gas-sensing monitoring of nitrogen dioxide (NO 2 ). CNT/WS 2 heteronanostructures were also tested as effective electrochemical probes for detecting riboflavin (vitamin B6) and as electrocatalysts for CO 2 reduction. The results of gas sensing and electrochemical tests were discussed and correlated to the morphology and surface coverage of WS 2 shell on CNT core. CNT/WS 2 with 200−300 ALD cycles demonstrated the best performances because of the optimal catalytic WS 2 properties and the formation of CNT/WS 2 junctions, allowing the sensitive and selective detection of NO 2 gas and riboflavin with a limit of detection (LOD) of 70 ppb and 0.4 μM, respectively, and formate production in the electrocatalytic reduction of CO 2 .

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Gas Sensing and Electrochemical Properties of CNT/WS₂ Core–shell Nanostructures

Zribi,

Crispi,

Giusi

et al. 2024

ACS Appl. Nano Mater.

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show abstract

“…eV are assigned to Sn3d5/2 and Sn3d3/2 of Sn(IV). 58,59 For Sb2p of SnSbOS-3, as shown in Fig. 11c, the peaks positioned at 529.3 eV and 538.9 eV belong to Sb2d3/2 and Sb2d5/2 of Sb(IV), 60,61 respectively, whereas the peaks at 530.1 eV and 531.2 eV are attributed to lattice oxygen and hydroxyl oxygen.…”

Section: Reaction Chemistry and Engineering Papermentioning

confidence: 95%