Atomically dispersed Pt (II) on WO3 for highly selective sensing and catalytic oxidation of triethylamine

Gu, Fubo; Cui, Yuzhen; Han, Dongmei; Hong, Song; Flytzani‐Stephanopoulos, Maria; Wang, Zhihua

doi:10.1016/j.apcatb.2019.117809

Cited by 128 publications

(100 citation statements)

References 78 publications

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“…The DTA measurement (figure S2(b † )) was used to confirm the thermal behavior of the material. The DTA measurement depicted two peak positions, relatively small endothermic peak at 36.4°C and broad exothermic peak at 221.3°C for the removal of water molecule and the synthesized WO 3 phase from WO 3…”

Section: Optical Transparency and Surface Morphology Analysesmentioning

confidence: 99%

“…properties, which have made it a appropriate material for various applications such as catalysts [3], gas sensors [4], and energy storage applications [5]. Up till, myriads of chemical and physical preparation methods like thermal evaporation, chemical vapor deposition, the sputtering, and colloidal suspension, have been applied for the synthesis of WO 3 nanostructures of different phases and morphologies; nanoparticles, nanofiber, nanorods and nanowires [6,7].…”

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confidence: 99%

“…Siciliano et al reported a direct growth of WO 3 film in an oxygen atmosphere using metal tungsten foil via a thermal evaporation method on a sapphire substrate which demonstrated a high sensitivity for NO 2 gas, and less for NO and NH 3 gases [10]. Ciateanu et al used a pulsed laser deposition method of mediated crystalline WO 3 films as oxygen gas detectors [11]. Zeng et al obtained porous WO 3 -based NO 2 gas sensors using anodic oxidation of DC magnetron sputtering method onto an alumina substrate [12].…”

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confidence: 99%

“…Several consecutive efforts have developed to reduce the operation temperature of these sensors likewise; the use of metal oxide-based gas sensors to detect various target gases at atmospheric temperature [14]. Teoh et al and Kim et al demonstrated WO 3 room-temperature-based sensor that detected NO 2 and NH 3 gases with moderate values of response and recovery time [15,16]. Moreover, above drawbacks might overcome by controlling the structure, morphology and surface area of WO 3, prepared by soft-chemical methods.…”

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confidence: 99%

“…The schematic of gas sensing mechanism using a band structure change is closely analogous to experimental findings. The WO 3 NBs gas sensor has also demonstrated remarkable sensing response for humidity.…”

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confidence: 99%

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Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks

Shaikh

Ghule

Shinde

et al. 2020

Mater. Res. Express

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Mesoporous tungsten oxide nanobricks (WO 3 NBs) are successfully prepared via a simple and costeffective hydrothermal synthesis method. The as-synthesized WO 3 NBs demonstrate a high sensitivity and selectivity when used for liquid ammonia and humidity sensor activities at room temperature (27°C). The monoclinic crystal structure has beencorroborated from thex-ray diffraction studies and the specific surface area is estimated to be 38.74 m 2 g −1 . A larger specific surface area has significantly facilitated a fast gas adsorption/desorption process. The WO 3 NBs notably exhibite gas sensitivity and selectivity for volatile organic compounds (VOCs) such as ammonia; however, a moderate performance is displayed with different oxidizing and reducing agents at room-temperature, namely: toluene, methanol, ethanol, and acetone. The sensor has offered a commercial potential with an extremely high response (75%), a 15-day operational stability at 100 ppm concentration of ammonia, and a practically remarkable ultra-high 8/5 s response/recovery time. The WO 3 NBs-based humidity sensor endows a 32% resistance response at 20% relative humidity, with a quick response/recovery time of 10/8 s; which is due to unique surface architecture of these NBs. Abbreviations VOC volatile organic compound; XRDx-ray diffraction

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Section: Optical Transparency and Surface Morphology Analysesmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks

Shaikh

Ghule

Shinde

et al. 2020

Mater. Res. Express

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Single‐Atomic‐Site Platinum Steers Middle Hydroxyl Selective Oxidation on Amorphous/Crystalline Homojunction for Photoelectrochemical Glycerol Oxidation Coupled with Hydrogen Generation

Feng,

Sun,

Feng

et al. 2024

Adv Funct Materials

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Photoelectrochemical (PEC) organic conversion is a promising approach to convert low‐cost organics to value‐added chemicals, which urgently needs the development of efficient and highly selective photoanodes. Here, a Pt single‐atom dispersed WO3 amorphous/crystalline homojunction for anodic glycerol oxidation reaction (GOR) coupled with cathodic hydrogen generation is reported. In the coupled photoelectrocatalytic system, the novel Pt‐SA/WOx photoanode reaches a photocurrent density of 2.85 mA cm−2 at 1.2 V versus RHE, with up to 297.3 mmol m−2 h−1 of glycerol conversion rate and 60.2% of dihydroxyacetone (DHA) selectivity, realizing green synthesis of high‐value chemicals. The experimental data and theoretical calculations reveal the regulated band structure, build‐in electric field, and surface charge density of Pt‐SA/WOx, which can improve the carrier lifetime, accelerate charge transfer, and reduce the energy barrier for the GOR process, thus boosting PEC activity and DHA selectivity. This work provides a feasible plan for designing atomic‐level engineering and constructing amorphous/crystalline homojunction on photoanodes for efficient PEC high‐value products from biomass.

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Progress and Perspectives of Single‐Atom Catalysts for Gas Sensing

et al. 2022

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Single‐atom catalysts (SACs) attract extensive attention in the field of heterogeneous catalysis in recent years due to the maximum atom utilization and unique physical and chemical properties. The gas sensing is actually a heterogeneous catalysis process but the SACs are new to this area. Although SACs show huge potential in gas sensing, the SACs gas sensing area currently is still at the infancy stage. This work critically reviews the recent advances and current status of single‐atom gas sensing materials. General synthesis routes, characterization methods, and sensing performance indexes are introduced. At the end, the challenges and future prospects on SACs gas sensing are presented from the authors’ perspectives. This work is anticipated to provide insights and guideline for the chemical sensing community.

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Atomically dispersed Pt (II) on WO3 for highly selective sensing and catalytic oxidation of triethylamine

Cited by 128 publications

References 78 publications

Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks

Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks

Single‐Atomic‐Site Platinum Steers Middle Hydroxyl Selective Oxidation on Amorphous/Crystalline Homojunction for Photoelectrochemical Glycerol Oxidation Coupled with Hydrogen Generation

Progress and Perspectives of Single‐Atom Catalysts for Gas Sensing

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Atomically dispersed Pt (II) on WO3 for highly selective sensing and catalytic oxidation of triethylamine

Cited by 128 publications

References 78 publications

Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO3 nanobricks

Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO3 nanobricks

Single‐Atomic‐Site Platinum Steers Middle Hydroxyl Selective Oxidation on Amorphous/Crystalline Homojunction for Photoelectrochemical Glycerol Oxidation Coupled with Hydrogen Generation

Progress and Perspectives of Single‐Atom Catalysts for Gas Sensing

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Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks

Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO₃ nanobricks