SnO2/Au Microelectromechanical Systems Modified by Oxygen Vacancies for Enhanced Sensing of Dioctyl Phthalate

ChemPlusChem, Год журнала: 2024, Номер 89(8)

Опубликована: Апрель 24, 2024

Dioctyl phthalate (DOP) serves as a characteristic gas utilized in early electrical fire detection, its detection offers promising prospects for the prevention of fires. In this study, we employed modified photodeposition method to prepare Tin dioxide (SnO

Язык: Английский

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Hydrodeoxygenation of anisole over SBA-15-supported Ni, Pd, and Pt mono- and bimetallic catalysts: effect of the metal's nature on catalytic activity and selectivity

Nanoscale, Год журнала: 2024, Номер 16(24), С. 11575 - 11591

Опубликована: Янв. 1, 2024

Monometallic Ni, Pd and Pt bimetallic catalysts formed by combinations of the above metals supported on SBA-15 silica were synthesized, characterized tested in hydrodeoxygenation reaction anisole. The objective work was to detect effect nature activity at different steps anisole hydrodeoxygenation: hydrogenation aromatic ring C-O bond cleavage intermediate cyclohexyl methyl ether. support N2 physisorption, X-ray diffraction, UV-vis diffuse reflectance spectroscopy, temperature-programmed reduction, scanning electron microscopy-energy dispersive transmission microscopy HAADF-STEM. catalytic tests carried out a batch reactor 280 °C 7.3 MPa pressure. results show that NiPd/SBA-15 catalyst had greatest ability for anisole, while its NiPt/SBA-15 analog resulted better hydrogenolysis. showed best performance HDO ascribed formation Ni-Pt alloy. On other hand, combination PdPt/SBA-15 particles with Pd-rich Pt-rich domains, showing high selectivity ether, which can be useful rings O-containing reactants saturated products. According characterization (HAADF-STEM), behavior NiPd/SBA-15, NiPt/SBA-15, could attributed characteristics active phases them.

Язык: Английский

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Theoretical investigation of 4d noble metal (Ru, Rh or Pd) single atom structures influencing surface oxygen behavior on SnO2(1 1 0)

Inorganic Chemistry Communications, Год журнала: 2024, Номер 169, С. 113036 - 113036

Опубликована: Авг. 26, 2024

Язык: Английский

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Synergistic Catalytic Effect of Pdpt Bimetallic Alloy for Room Temperature Hydrogen Detection

Опубликована: Янв. 1, 2023

Given the flammable and explosive nature of hydrogen, its detection at low temperatures even room temperature is particularly important. In this study, Pd/Pt bimetallic nanoparticles supported on hollow indium oxide spheres were synthesized through a simple hydrothermal reduction method for hydrogen temperature. Various characterization techniques employed to confirm successful preparation materials. The material exhibited stronger catalytic activity, resulting in significant enhancement capabilities compared alone. Test results also demonstrated excellent performance material, with sensor showing an astonishing response 29.8 100 ppm temperature, along positive selectivity repeatability. enhanced can be attributed synergistic effect increased number active metal sites.

Язык: Английский

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Metal clusters modified hexagonal boron nitride for adsorption and sensing of lithium batteries thermal runaway gases

Sensors and Actuators A Physical, Год журнала: 2024, Номер 379, С. 115929 - 115929

Опубликована: Сен. 26, 2024

Язык: Английский

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Designing Schottky junction constructed from porous PdPt nanospheres embedded in Bi2S3 nanorods for ultrasensitive photoelectrochemical immunoassay of acute myocardial infarction biomarkers

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157966 - 157966

Опубликована: Ноя. 1, 2024

Язык: Английский

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Negatively Charged Pt Atoms on Pd Nanocubes for an Enhanced Hydrogen Oxidation Performance in a Membrane Electrode Assembly

ACS Applied Nano Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Proton-exchange membrane fuel cells (PEMFCs) constitute an advanced clean technology that efficiently transforms hydrogen energy into electricity. However, the oxidation reaction (HOR) at anode heavily depends on precious metal catalysts, posing economic challenges for PEMFCs commercialization. Consequently, developing cost-effective, high-activity HOR catalysts anodes is imperative. In this study, we developed a bimetallic Pd–Pt electrocatalyst acidic HOR, enhancing catalytic activity by modulating electron transfer between metals. X-ray photoelectron spectroscopy and absorption near-edge confirmed presence of negatively charged Pt atoms. Electrochemical tests showed PdPt0.1 exhibited exceptional activity, with mass activities 3.2 11.5 times higher than those commercial Pt/C Pd/C, respectively. Moreover, in electrode assembly tests, achieved power density 1.19 W cm–2, outperforming 0.85 cm–2. These remarkable performances are attributed to Pd Pt, reducing binding during HOR. This study offers valuable insights controlled design based electron-transfer direction.

Язык: Английский

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Bimetallic Au-Pt nanoparticle-supported ZnO porous nanobelts for selective gas sensing enhancement to benzene

Sensors and Actuators B Chemical, Год журнала: 2024, Номер unknown, С. 137125 - 137125

Опубликована: Дек. 1, 2024

Язык: Английский

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SnO2-based resistive hydrogen gas sensor: A comprehensive review from performance to function optimization

Materials Science in Semiconductor Processing, Год журнала: 2024, Номер 188, С. 109209 - 109209

Опубликована: Дек. 18, 2024

Язык: Английский

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