Fabrication and Characterization of Pt doped Ti/Sb-SnO2 Electrode and its Efficient Electro-Catalytic Activity toward Phenol

Li, Xia; Yan, Jing; Zhu, Kaigui

doi:10.30919/es8d432

Cited by 12 publications

(6 citation statements)

References 55 publications

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“…The SEM images observed in Figure 1A-C show the morphologies of the three resulting electrodes. All the electrodes have a coating with the appearance of "cracked mud", which is a typical morphology of oxide electrodes synthesized via thermal decomposition techniques [17,18]. Furthermore, it is possible to identify cracks on the surface of the electrodes that are attributed to mechanical stress arising from the plasticity of the coating and differences in the coefficients of thermal expansion between the substrate and the film formed during the calcination process [19,20].…”

Section: Physical and Electrochemical Characterization Of Manufacture...mentioning

confidence: 99%

Platinum-Modified Mixed Metal Oxide Electrodes for Efficient Chloralkaline-Based Energy Storage

Ribeiro,

Santos,

Dória

et al. 2024

Catalysts

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In this work, a series of novel mixed metal oxide (MMO) electrodes with the composition Ti/RuO2Sb2O4Ptx (0 ≤ x ≤ 10.0) were developed, envisaging their application in a reversible electrochemical cell based on the chloralkaline process as an energy storage system. These electrodes were synthesized via the ionic liquid method. Comprehensive physical, chemical, and electrochemical characterizations were conducted to evaluate their performance. The feasibility of employing these electrodes within reversible processes was explored, using the products generated during the electrolytic operation of the system for fuel cell operation. During the electrolyzer operation, higher current densities resulted in enhanced current efficiencies for the production of oxidized chlorine species. Notably, the presence of platinum in the catalyst exhibited a negligible impact on the coulombic efficiency at low current densities where water oxidation predominates. However, at higher current densities, the presence of platinum significantly improved coulombic efficiency, approaching values of approximately 60%. Transitioning to a fuel cell operation, despite the improved kinetic performance associated with a higher platinum content, the process efficiency was predominantly governed by ohmic losses. Curiously, the MMO electrode made without platinum (Ti/(RuO2)70-(Sb2O4)30) displayed the lowest ohmic losses. This study establishes optimal conditions for future investigations into this promising possibility, which holds great potential for energy storage via chloralkaline-based reversible reactions.

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Section: Physical and Electrochemical Characterization Of Manufacture...mentioning

confidence: 99%

Platinum-Modified Mixed Metal Oxide Electrodes for Efficient Chloralkaline-Based Energy Storage

Ribeiro,

Santos,

Dória

et al. 2024

Catalysts

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show abstract

“…The Nyquist electrochemical impedance spectroscopy (EIS) was performed to evaluate the kinetic rate of the reaction. the EIS plots were tted analytically using an equivalent circuit diagram consisting of the solution resistance (R s ), the high-frequency interfacial charge transfer resistance (R ct1 ), and the low-frequency resistance (R 2 ) associated with O 2 mass transfer [41,42]. As shown in Fig.…”

Section: Electrocatalytic Performancementioning

confidence: 99%

Controlled fabrication of Ru–O–Se composites for enhanced acidic oxygen evolution

Lin

et al. 2023

Adv Compos Hybrid Mater

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Developing relatively cost-effective and high-performance Ru-based composites as electrocatalysts for acidic oxygen evolution has become the critical step toward emerging renewable energy conversion, in which exploring controllable synthetic strategies and investigating the intrinsic nature by non-metallic interfacial modulation is highly desirable. In this work, a facile tandem process is proposed by ball-milling and thermal annealing for the scalable synthesis of RuO x Se y nanocomposites with in-situ formed crystalline RuSe 2 and metallic Ru heterostructures on RuO 2 substrate. The optimized RuO x Se y -800 sample has been proved to an excellent OER activity and long-term stability in an acidic electrolyte due to its suitable microscopic morphology and phase composition, along with a relatively smaller Tafel slope of 45.4 mV dec − 1 compared with commercial RuO 2 and most similar catalysts reported in the literature.The outstanding acidic OER performance can be ascribed to the enhanced electron transfer and more active site exposure by controllable selenization. This work paves a novel way for the design and largescale production of various non-metallic modi ed composite catalysts for extensive applications of energy conversion and storage.

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“…[36] No obvious Pt phase can be indexed in the XRD pattern of Pt/CHC samples, demonstrating the uniformly distribution of small-sized Pt nanoclusters and no obvious changes were induced to the crystal phase of cordierite due to the modification of Pt. [37,38] To identify the chemical state of Pt, O elements and analyze the metal-support interaction in these Pt/CHC catalysts, 1.0% Pt/CHC sample is used as a substitute for XPS characterization because the low Pt signal of 0.2 and 0.5 % Pt/CHC samples cannot be well measured well due to the detect limit. All of the binding energies are calibrated by using a C 1s at 284.8 eV as internal standard.…”

Section: Structural Characterizationsmentioning

confidence: 99%

Mechanochemical Synthesis of Pt Nanoclusters Supported Cordierite for Enhanced Catalytic Oxidation of Toluene

Du¹,

Chaoliang²,

Wang³

et al. 2022

Eng. Sci.

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Developing a low cost and high efficiency synthetic pathway is essential for the large-scale application of supported noble metal catalysts in many important environmental catalytic reactions, especially for volatile organic compounds (VOCs) catalytic oxidation. In this study, we report a facile chemical wet ball-milling method to control the metal-support interactions and platinum (Pt) nanoclusters (1.12 ± 0.23 nm) supported cordierite honeycomb ceramic (CHC) catalysts with enhanced toluene oxidation performance is obtained. The optimized Pt/CHC catalyst with Pt loading as low as 1.0 wt.% could convert 90% toluene (1000 ppm) to CO 2 at about 160 °C under a space velocity of 40000 mL g −1 h −1 . The catalyst also exhibits a low apparent activation energy of 44.1 kJ mol -1 , high stability for more than 60 h and moisture resistance properties under reaction condition. It is concluded that the high adsorbed oxygen species concentration, better low-temperature reducibility, and synergistic effect between Pt nanoclusters and CHC support is responsible for enhanced catalytic performance. Furthermore, the present wet ball-milling synthetic strategy paves a new avenue for mass production of highly efficient supported noble metal catalysts for environmental applications.

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Fabrication and Characterization of Pt doped Ti/Sb-SnO2 Electrode and its Efficient Electro-Catalytic Activity toward Phenol

Cited by 12 publications

References 55 publications

Platinum-Modified Mixed Metal Oxide Electrodes for Efficient Chloralkaline-Based Energy Storage

Platinum-Modified Mixed Metal Oxide Electrodes for Efficient Chloralkaline-Based Energy Storage

Controlled fabrication of Ru–O–Se composites for enhanced acidic oxygen evolution

Mechanochemical Synthesis of Pt Nanoclusters Supported Cordierite for Enhanced Catalytic Oxidation of Toluene

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