Wavy SnO2 catalyzed simultaneous reinforcement of carbon dioxide adsorption and activation towards electrochemical conversion of CO2 to HCOOH

Chen, Zhou; Fan, Tingting; Zhang, Yaqian; Xiao, Jing; Gao, Min‐Rui; Duan, Nanqi; Zhang, Jiawei; Li, Jianhui; Liu, Qingxia; Yi, Xiaodong; Luo, Jing‐Li

doi:10.1016/j.apcatb.2019.118243

Cited by 107 publications

(66 citation statements)

References 38 publications

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“…Several electrocatalysts for CO 2 RR have been explored, including metals (Au, [3] Ag [4] ), metal oxides (CuO/Cu 2 O, [5] SnO 2 [6] ), metal chalcogenides, [7] carbon nanomaterials, [8] and others [9] . Among these electrocatalysts, SnO x has special advantage in converting CO 2 to HCOOH, and various strategies have been proposed to improve its activity and selectivity, [10] including the regulation of morphology, [10a] the engineering of pore structure, [10b,c] the increase of grain boundary density, [10d] the modulation of electronic configuration, [10e] the creation of oxygen vacancy, [10f,g,h] and the adjustment of oxidation states, [10i] etc. Additionally, it is reported that SnO 2 loaded carbon‐based materials show high CO 2 adsorption performance and fast electron transfer due to the formed Sn−O−C linkages [11] .…”

Section: Figurementioning

confidence: 99%

“…It is found that the CO 2 desorption peak area of SnO 2 /OC is significantly higher than either SnO 2 @OC or SnO 2 , implying its super CO 2 adsorption capacity, which is ascribed to the high surface area and rich −COOH group. Besides, OH − is regarded as a surrogate of CO 2 ⋅ − to explore its adsorption energy, [10f,20] and the anodic LSV curves were conducted to study CO 2 activation ability (Figure 4f). It is found that the sample SnO 2 /OC shows more negative potential for oxidative adsorption of OH − than SnO 2 and SnO 2 @OC, implying its stronger binding to CO 2 ⋅ − intermediate.…”

Section: Figurementioning

confidence: 99%

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Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

et al. 2020

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Converting CO2into value‐added chemicals or fuels by electrochemical CO2reduction reaction (CO2RR) has aroused great interest, whereas designing highly active and selective electrocatalysts is still a challenge. Herein, a novel kind of electrochemical catalyst composed with SnO2and organic carbon (OC), named as SnO2/OC, was facilely constructed for CO2RR. The obtained SnO2/OC exhibits both high faradaic efficiency for formate (∼75 %) and carbon products (∼95 %) as well as excellent stability. High surface area with hierarchically porous structure and the homogeneous formation of Sn−O−C linkages in SnO2/OC jointly promote the adsorption and activation of CO2, as well as fast transport of reactants and products.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

et al. 2020

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“…The lattice oxygen from the surface of the tin oxide is able to react chemically with the reagent and after the reaction to be renewed by the oxygen of the gas phase (mechanism of Mars -van Krevelen) [4]. This ability makes it possible to use SnO 2 as a catalyst for oxidative processes [5][6][7]. The change in the resistance of tin oxide in the presence of various gases formed the basis for use as a sensitive element in gas sensors [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The effect of three-minute exposure of oxygen plasma on the properties of tin oxide films

Dmitriyeva¹,

Lebedev²,

Grushevskaya³

et al. 2020

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Research devoted to the effect of three-minute exposure of oxygen plasma on the properties of tin oxide films investigation. The films were obtained by sol-gel method from five-water tin tetrachloride solution. The concentration of tin ions in the SnCl4/EtOH film-forming system was 0.14 mol/l. The solution system was deposed on the glass substrate by carring out a modified dipping method. Plasma treatment was performed at a pressure of 6.5 Pa and a power of about 20 Watts. The frequency of the oscillations produced by the generator was 27.12 ± 0.6 % MHz as well. The temperature of the samples during processing did not exceed 100 ºC. As a result of the formation of tin oxide (II), the film transmittance decreased after treatment with oxygen plasma. The width of the electric forbidden zone of the obtained samples was calculated, which was 3.95 eV for glass and 3.79 eV for film. The resistance of the films was determined by 10 measurements on different parts of the samples. The film without processing has a resistance of about 4255 ± 1158 kΩ, after processing, the resistance decreased by 25 times and amounted to 167 ± 26 kΩ. A decrease in resistance indicates an increase in the concentration of charge carriers in the sample. The resulting SnO is a semiconductor that lowers the transmittance of the studied films and contributes to reducing their resistance. X-ray structural analysis of the samples was also performed. After processing in oxygen plasma, the intensity of reflection from the (110) plane have increased. It should be noted that the number of planes with (101) indexes has decreased. The study of the sample surface showed the destructive nature of three-minute exposure by oxygen plasma. Keywords: thin films, SnO2, sol-gel method, oxygen plasma treatment, transparency, structure, resist

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“…• ‾ 的吸附能力[27] ，结果如图 8(a)所示。催化剂 CuO/ZnO-1、 CuO/ZnO-2 和 CuO/ZnO-3 的氧化峰电势相近，说明 CuO/ZnO 对 OH ⁻ 有相似的吸附能力，间接表明对 CO2 • ‾ 也具有相似的吸附能力。与 CuO/ZnO 相比，CuO 的氧化峰电势更负，说明 CuO 催化剂对 CO2 活化产物 CO2 • ‾ 的吸附能力较强。因此，CuO 更有利于 CO 的形成，而相比 CuO 催化剂，CuO/ZnO 更倾向于产生 H2，在 CuO 中引入 Zn • ‾ )。活化后的 CO2 分子结合 H 质子形成*COOH 中间物，最终在质子和电子的作用下脱水形成 CO 产物 [7] 。在该体系中， CuO 对活化产物 CO2 • ‾ 具有更强的吸附能力，能够将活化后的 CO2 分子最终还原为 CO 产物，是 CO2 还原的主要活性位点。而 Zn 物种引入后，CuO 对图 S1 CuO、CuO/ZnO-1、CuO/ZnO-2 和 CuO/ZnO-3 电催化剂的(a) N2 吸脱附曲线和(b)孔径分布曲线…”

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CuO/ZnO Composite Electrocatalyst: Preparation and Reduction of CO₂ to Syngas

Zhang¹,

Min²,

Zhou³

2021

Journal of Inorganic Materials

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The reduction of carbon dioxide (CO2) to syngas (a mixture of CO and H2) can not only realize the carbon cycle and decrease the greenhouse effect but also alleviate the energy crisis. The design of catalyst is the key to realize CO2 resource utilization. Herein, CuO and CuO/ZnO composite were prepared by metal ion co-precipitation method, and the performance of electrochemical CO2 reduction to syngas under different potentials was investigated by adjusting the catalyst components. The results show that the introduction of zinc (Zn) species can decrease the adsorption intensity of intermediate CO2 •⁻ on the catalyst, which leads to the decrease of Faraday efficiency (FE) of CO and the increase of FE of H2, thus achieving controllable regulation of CO/H2 in the range of 1/1~1/4 under different applied electrochemical potential. In particular, the total FE of syngas CO/H2 is up to 84% when the ratio of Cu to Zn in the precursor solution is 1 : 2.

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Wavy SnO2 catalyzed simultaneous reinforcement of carbon dioxide adsorption and activation towards electrochemical conversion of CO2 to HCOOH

Cited by 107 publications

References 38 publications

Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

The effect of three-minute exposure of oxygen plasma on the properties of tin oxide films

CuO/ZnO Composite Electrocatalyst: Preparation and Reduction of CO₂ to Syngas

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Wavy SnO2 catalyzed simultaneous reinforcement of carbon dioxide adsorption and activation towards electrochemical conversion of CO2 to HCOOH

Cited by 107 publications

References 38 publications

Hierarchically Porous SnO2Coupled Organic Carbon for CO2Electroreduction

Hierarchically Porous SnO2Coupled Organic Carbon for CO2Electroreduction

The effect of three-minute exposure of oxygen plasma on the properties of tin oxide films

CuO/ZnO Composite Electrocatalyst: Preparation and Reduction of CO2 to Syngas

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Product

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Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

CuO/ZnO Composite Electrocatalyst: Preparation and Reduction of CO₂ to Syngas