TiO2 nanoparticles functionalized by Pd nanoparticles for gas-sensing application with enhanced butane response performances

Chen, Nan; Deng, Dongyang; Li, Yuxiu; Liu, Xu; Xing, Xinxin; Xiao, Xuechun; Wang, Yude

doi:10.1038/s41598-017-08074-y

Cited by 38 publications

(9 citation statements)

References 49 publications

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“…Al-Taweel and Saud [22] also observed this type of bond and Dicastillo et al [23], namely, the absorption peak occurred at 700 -400 cm −1 of wavenumber. The absorption peak at a wavenumber of 1087.89 cm −1 was a stretching or deviational vibration of the Ti-O-Ti bond in TiO 2 [24]. The peak of 1641.48 cm −1 showed a bending mode of water Ti-OH which indicated the presence of some FIG.…”

Section: Fourier Transform Infrared (Ftir)mentioning

confidence: 95%

The characteristics of TiO2 anatase from tulungagung sand as an antibacterial material

Rohmawati¹,

Istiqomah²,

Pratama³

et al. 2022

Nanosystems: Phys. Chem. Math.

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TiO 2 anatase is a material that has good photocatalytic properties. The synthesis of TiO 2 anatase from Tulungagung natural sand used the leaching method. The synthesized samples were characterized by TGA, XRD, FTIR, BET, SEM, UV-DRS and tested for antibacterial effect. In this study, the TiO 2 anatase phase was already formed and experiencing three stages of weight loss. It had stretching vibration of the OH group, had a bending mode of water Ti-OH, and Ti-O-Ti at wavenumbers 4000 to 400 cm −1 . It also had a mesoporous size, was spherical with a grain size of 58 nm and had an energy gap of 3.42 eV. TiO 2 anatase with a 600 µg/mL concentration could reduce Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa bacteria. Therefore, TiO 2 anatase has the potential in an antibacterial agent.

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Section: Fourier Transform Infrared (Ftir)mentioning

confidence: 95%

The characteristics of TiO2 anatase from tulungagung sand as an antibacterial material

Rohmawati¹,

Istiqomah²,

Pratama³

et al. 2022

Nanosystems: Phys. Chem. Math.

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“…Surface functionalization by decorating the material surfaces with nanoparticles to enhance the sensitivity and selectivity of the gas sensor towards the hazardous gas using chemical route has been reported elsewhere [ 14 , 15 ]. However, this method is very complicated as the preparation involved many chemicals and consuming lots of reaction time to tune the desired size of the nanoparticles for the aimed applications [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet Light-Assisted Copper Oxide Nanowires Hydrogen Gas Sensor

et al. 2018

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We fabricated copper oxide nanowires (CuO NWs) ultraviolet (UV) light-assisted hydrogen gas sensor. The fabricated sensor shows promising sensor response behavior towards 100 ppm of H2 at room temperature and elevated temperature at 100 °C when exposed to UV light (3.0 mW/cm2). One hundred-cycle device stability test has been performed, and it is found that for sample elevated at 100 °C, the UV-activated sample achieved stability in the first cycle as compared to the sample without UV irradiation which needed about 10 cycles to achieve stability at the initial stage, whereas the sample tested at room temperature was able to stabilize with the aid of UV irradiation. This indicates that with the aid of UV light, after some “warming up” time, it is possible for the conventional CuO NW sensor which normally work at elevated temperature to function at room temperature because UV source is speculated to play a dominant role to increase the interaction of the surface of CuO NWs and hydrogen gas molecules absorbed after the light exposure.

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“…Up to now, different types of nanostructured materials have attracted attention as gas sensing materials, including SnO 2 [4], ZnO [5], polypyrrole [6], TiO 2 [2,7], SnO 2 /In 2 O 3 nanocomposites [8], nanostructured conjugated polymers [9], SnO 2 /carbon nanofiber composites [10], nanostructured polyaniline/gold composites [11], etc. Among those, SnO 2 , a typical n-type wide band gap semiconductor ( E g = 3.6 eV at 300 K), is widely used in gas sensors due to its unique physical and chemical properties and good thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Pd-Functionalized SnO2 Nanofibers Prepared by Shaddock Peels as Bio-Templates for High Gas Sensing Performance toward Butane

et al. 2018

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Pd-functionalized one-dimensional (1D) SnO2 nanostructures were synthesized via a facile hydrothermal method and shaddock peels were used as bio-templates to induce a 1D-fiber-like morphology into the gas sensing materials. The gas-sensing performances of sensors based on different ratios of Pd-functionalized SnO2 composites were measured. All results indicate that the sensor based on 5 mol % Pd-functionalized SnO2 composites exhibited significantly enhanced gas-sensing performances toward butane. With regard to pure SnO2, enhanced levels of gas response and selectivity were observed. With 5 mol % Pd-functionalized SnO2 composites, detection limits as low as 10 ppm with responses of 1.38 ± 0.26 were attained. Additionally, the sensor exhibited rapid response/recovery times (3.20/6.28 s) at 3000 ppm butane, good repeatability and long-term stability, demonstrating their potential in practical applications. The excellent gas-sensing performances are attributed to the unique one-dimensional morphology and the large internal surface area of sensing materials afforded using bio-templates, which provide more active sites for the reaction between butane molecules and adsorbed oxygen ions. The catalysis and “spillover effect” of Pd nanoparticles also play an important role in the sensing of butane gas as further discussed in the paper.

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TiO2 nanoparticles functionalized by Pd nanoparticles for gas-sensing application with enhanced butane response performances

Cited by 38 publications

References 49 publications

The characteristics of TiO2 anatase from tulungagung sand as an antibacterial material

The characteristics of TiO2 anatase from tulungagung sand as an antibacterial material

Ultraviolet Light-Assisted Copper Oxide Nanowires Hydrogen Gas Sensor

Pd-Functionalized SnO2 Nanofibers Prepared by Shaddock Peels as Bio-Templates for High Gas Sensing Performance toward Butane

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