Effect of AgO loading on flame-made LaFeO3 p-type semiconductor nanoparticles to acetylene sensing

Sukee, Anupong; Alharbi, Abdulaziz; Staerz, Anna; Wisitsoraat, Anurat; Liewhiran, C.; Weimar, Udo; Bârsan, Nicolae

doi:10.1016/j.snb.2020.127990

Cited by 41 publications

(17 citation statements)

References 45 publications

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“…Several works in the literature report the efficiency of LaFeO 3 in the photocatalytic production of molecular hydrogen starting from aqueous solutions containing different types of organic substances, such as rhodamine B (RhB) [35], sucrose [36], glucose [11,20,37]. LaFeO 3 can be modified to improve its photocatalytic performance, and this can be done through the doping or surface modification with different types of noble or non-noble metals [37][38][39][40][41], or through the combination in composites [42,43]. For example, it is reported the use of Ru [44] and Rh [45] as dopant agents for LaFeO 3 in the photocatalytic molecular hydrogen production from glucose solutions.…”

Section: Introductionmentioning

confidence: 99%

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

et al. 2021

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In this work, the optimization of Ni amount on LaFeO3 photocatalyst was studied in the photocatalytic molecular hydrogen production from glucose aqueous solution under UV light irradiation. LaFeO3 was synthesized via solution combustion synthesis and different amount of Ni were dispersed on LaFeO3 surface through deposition method in aqueous solution and using NaBH4 as reducing agent. The prepared samples were characterized with different techniques: Raman spectroscopy, UltraViolet-Visible Diffuse Reflectance Spettroscopy (UV–Vis-DRS), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), X-ray Fluorescence (XRF), Transmission Electron microscopy (TEM), and Scanning Electron microscopy (SEM) analyses. For all the investigated photocatalysts, the presence of Ni on perovskite surface resulted in a better activity compared to pure LaFeO3. In particular, it is possible to identify an optimal amount of Ni for which it is possible to obtain the best hydrogen production. Specifically, the results showed that the optimal Ni amount was equal to nominal 0.12 wt% (0.12Ni/LaFeO3), for which the photocatalytic H2 production was equal to 2574 μmol/L after 4 h of UV irradiation. The influence of different of photocatalyst dosage and initial glucose concentration was also evaluated. The results of the optimization of operating parameters indicated that the highest molecular hydrogen production was achieved on 0.12Ni/LaFeO3 sample with 1.5 g/L of catalyst dosage and 1000 ppm initial glucose concentration. To determine the reactive species that play the most significant role in the photocatalytic hydrogen production, photocatalytic tests in the presence of different radical scavengers were performed. The results showed that •OH radical plays a significant role in the photocatalytic conversion of glucose in H2. Moreover, photocatalytic tests carried out with D2O instead of H2O evidenced the role of water molecules in the photocatalytic production of molecular hydrogen in glucose aqueous solution.

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Section: Introductionmentioning

confidence: 99%

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

et al. 2021

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“…Similar to microstructure-based volatile hydrocarbon vapors quantification (example: Sn 2+ doped NiO microspheres in Xylene detection with sub-ppm LOD) [ [390][391][392][393][394][395][396][397]. Wherein, Ag/Bi 2 O 3 nanocomposite and Graphene/SnO 2 NPs nanocomposite were found to perform remarkably in terms of their operation temperature (at room temperature) [394,397].…”

Section: Volatile Hydrocarbons Detection By Distinct Nanostructuresmentioning

confidence: 84%

“…Similar to microstructure-based volatile hydrocarbon vapors quantification (example: Sn 2+ doped NiO microspheres in Xylene detection with sub-ppm LOD) [ 389 ], nanocomposites, such as Pd/PdO/S-SnO 2 nanocomposite film, rGO/Co 3 O 4 nanocomposite, WO 3 decorated TiO 2 NPs nanocomposite, BGQD/Ag–LaFeO 3 nanocomposite, Ag/Bi 2 O 3 nanocomposite, AgO loaded LaFeO 3 nanocomposite, CuO NPs-Ti 3 C 2 Tx MXene nanocomposite, and Graphene/SnO 2 NPs nanocomposite were effectively applied in the detection of hydrocarbons as detailed in Table 5 [ 390 , 391 , 392 , 393 , 394 , 395 , 396 , 397 ]. Wherein, Ag/Bi 2 O 3 nanocomposite and Graphene/SnO 2 NPs nanocomposite were found to perform remarkably in terms of their operation temperature (at room temperature) [ 394 , 397 ].…”

Section: Volatile Hydrocarbons Detection By Distinct Nanostructurementioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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“…In the gas sensors field, perovskites are promising candidate materials in gas sensor applications, due to their unique electrical and catalytic properties [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Owing to the general formula of perovskite, written as ABO 3 , where the A-site cation bears a greater ionic radius than the B-site cation, this class of structures harbors a wide variety of possibilities for structure tailoring of oxides, i.e., by replacing A- and B-sites with different elements.…”

Section: Introductionmentioning

confidence: 99%

The Role of Different Lanthanoid and Transition Metals in Perovskite Gas Sensors

Alharbi

Junker

Alduraibi

et al. 2021

Sensors

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Beginning with LaFeO3, a prominent perovskite-structured material used in the field of gas sensing, various perovskite-structured materials were prepared using sol–gel technique. The composition was systematically modified by replacing La with Sm and Gd, or Fe with Cr, Mn, Co, and Ni. The materials synthesized are comparable in grain size and morphology. DC resistance measurements performed on gas sensors reveal Fe-based compounds solely demonstrated effective sensing performance of acetylene and ethylene. Operando diffuse reflectance infrared Fourier transform spectroscopy shows the sensing mechanism is dependent on semiconductor properties of such materials, and that surface reactivity plays a key role in the sensing response. The replacement of A-site with various lanthanoid elements conserves surface reactivity of AFeO3, while changes at the B-site of LaBO3 lead to alterations in sensor surface chemistry.

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Effect of AgO loading on flame-made LaFeO3 p-type semiconductor nanoparticles to acetylene sensing

Cited by 41 publications

References 45 publications

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

LaFeO3 Modified with Ni for Hydrogen Evolution via Photocatalytic Glucose Reforming in Liquid Phase

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

The Role of Different Lanthanoid and Transition Metals in Perovskite Gas Sensors

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