(Sb2O3/Sb2O5)-doped SnO2–Co3O4–Cr2O3 varistors: The Sb2O4 in-situ formation and its influence over the electrical and microstructural properties

Miranda-López, Martin I.; Rico, V. Sánchez; Hernández, M.B.; Falcón-Franco, L.; García-Villarreal, S.; Zambrano‐Robledo, Patricia del Carmen; Esneider-Alcalá, Miguel; García-Ortiz, L.; Aguilar-Martínez, J.A.

doi:10.1016/j.ceramint.2020.08.120

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…The present work analyzes the use of the ceramic system of SnO 2 Sb 2 O 3 . This is a ceramic semiconductor used mainly in conductivity studies, 31) and is mixed with other materials in the synthesis of electrodes for electrooxidation of organic pollutants, 32,33) photovoltaic cells, 34) etc. SnO 2 Sb 2 O 3 presents great potential as a semiconductor because antimony (Sb) and tin (Sn) have valence numbers +4 and +3, respectively.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue (MB) and Methyl Orange (MO) by the Highly Oxidative Properties of SnO2–Sb2O3 Particles

et al. 2022

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SnO 2 Sb 2 O 3 particles, with various Sb 2 O 3 mole fraction (x) ranging from 0 to 1, have been synthesized by a sol-gel method. Tin oxalate and antimony chloride were used as the metal precursors, water as the solvent, citric acid as the pH modifier, and triethanolamine as a stabilizing agent. The effect of the chemical composition of the synthesized catalyst on the photocatalytic degradation of methylene blue (MB) and methyl orange (MO) was evaluated. It was established that a SnO 2 Sb 2 O 3 (Sb 2 O 3 mole fraction of x = 0.15) catalyst presents a highly oxidative power to degrade a 20 µM MB solution until 98.60%, using a UV lamp of 254 nm and 6 W. The kinetics of the SnO 2 Sb 2 O 3 (x = 0.15) photocatalytic oxidation was monitored as a function of the initial concentration of MO (100, 200, 300, and 400 µM) at different reaction times. It was found that the reaction probably presents a pseudo-first-order kinetic model. The effect of the intensity of the power lamp was studied, finding an increment from 16.32 to 98.42%, for UV lamps of 6 W and 72 and 1200 mW cm ¹2 , respectively. Finally, the effect of temperature (298, 318, 328 and 338 K) was analyzed, and the activation energy from Ea = 7.2 kcal mol ¹1 was determined.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue (MB) and Methyl Orange (MO) by the Highly Oxidative Properties of SnO2–Sb2O3 Particles

et al. 2022

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“…[7,9,24] 이에 기반하여 안티모 니 산화물 첨가를 통한 SCR 촉매의 산화/환원 특성 및 SO 2 저항성을 향상시킨 연구가 많이 보고되었다. [7,9,25,26] 의 기하학적 구조에 내재되어 있다. [27] 또한,…”

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“…Sb 3+ 및 Sb 5+ 로 구성되어있다. [25] Sb 2 O 5 결정상의 안티모 니 양이온종은 octahedral [Sb 5+ (O 2-) 6 ] 7-의 기하학적 구 조에 내재된 Sb 5+ 이다. [28] 힘들다.…”

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Inspecting Promotive Functions of Antimony Oxides for NH3-Assisted Selective Catalytic NOX Reduction

Lee¹,

Kim²

2022

Ceramist

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It is widely accepted that Sb oxide promotes redox cycling feature and SO2 resistance of a catalyst utilized for selective catalytic NOX reduction (SCR) at low temperatures (≤300 ℃). However, promotive roles of Sb oxide have never been explored with the alteration of its crystal phases, which can be crucial to direct the overall acidic/redox characteristics and SCR performance of a catalyst along with its SO2 tolerance. In this regard, while implementing TiO2-supported Mn oxide (Mn) as a model catalyst, we successfully isolated Sb2O3 and Sb2O5 on Mn using wet impregnation and precipitation protocols, leading to produce Mn-Sb-I and Mn- Sb-P, respectively. The resulting catalysts were verified to have comparable acidic properties, yet, exhibit distinct redox traits, as evidenced by the greatest quantity of labile oxygens for Mn-Sb-I (Sb2O3) compared to Mn and Mn-Sb-P (Sb2O5). This leads to significant enhancement of SCR performance and SO2 resistance for Mn-Sb-I over the others.

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Sb–doped ZnO ceramics: NTC thermistors with high temperature sensitivity and electrical stability

Peng

et al. 2021

J Mater Sci: Mater Electron

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(Sb2O3/Sb2O5)-doped SnO2–Co3O4–Cr2O3 varistors: The Sb2O4 in-situ formation and its influence over the electrical and microstructural properties

Cited by 9 publications

References 22 publications

Photocatalytic Degradation of Methylene Blue (MB) and Methyl Orange (MO) by the Highly Oxidative Properties of SnO<sub>2</sub>–Sb<sub>2</sub>O<sub>3</sub> Particles

Photocatalytic Degradation of Methylene Blue (MB) and Methyl Orange (MO) by the Highly Oxidative Properties of SnO<sub>2</sub>–Sb<sub>2</sub>O<sub>3</sub> Particles

Inspecting Promotive Functions of Antimony Oxides for NH3-Assisted Selective Catalytic NOX Reduction

Sb–doped ZnO ceramics: NTC thermistors with high temperature sensitivity and electrical stability

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