Low-temperature in-situ growth of SnO2 nanosheets and its high triethylamine sensing response by constructing Au-loaded ZnO/SnO2 heterostructure

Zhai, Ting; Xu, Hongyan; Li, Wenru; Yu, Huanqin; Chen, Zhengrun; Wang, Jieqiang; Cao, Bingqiang

doi:10.1016/j.jallcom.2017.12.016

Cited by 76 publications

(16 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This increase in the binding energy of Ti-2p peaks indicates increased coordination of Ti with carbon quantum dots [33,36] in Au@TiO 2 @C. Figure 4(b) shows Au-4f peaks in Au@TiO 2 @C located at 83.8 and 87.5 eV. These peaks correspond to the splitting of 4f doublet of 3.7 eV in Au metal, [11,36,42] which indicates metallic characteristic of Au. The ambiguous peaks of Au were resulting by the thick shell of TiO 2 .…”

Section: Resultsmentioning

confidence: 93%

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Wang

Wang³

et al. 2020

ChemistrySelect

View full text Add to dashboard Cite

A simple method to synthesize Au@TiO2@C core‐shell sandwich nanoparticles by hydrolysis and depositing carbon quantum dots (CQDs) is reported. The photocatalytic activity of the synthesized material was tested via degrading Rhodamine B (RhB) under simulated‐solar light irradiation. The degradation rate was found in the following order: Au@TiO2@C > P25 > Au@TiO2 > TiO2. The superior photocatalytic of Au@TiO2@C was attributed to synergistic effect of Au and CQDs. The CQDs layer coated outside benefits in improving absorption efficiency of solar light host and separation of electron‐holes pairs. The Au core can accelerate transfer process of photo excitons which can facilitate photocatalytic reaction.

show abstract

Section: Resultsmentioning

confidence: 93%

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Wang

Wang³

et al. 2020

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…It can also be clearly seen from the Figure 4 that all composite sensors have higher response to TEA than pure SnO 2 and the sensor based on SC-5 show higher response value than the response of the other two composite sensors. The TEA gas-sensitive properties of the SC-5 composite prepared in this work and the materials reported in other literatures [4,28,37,38,39,40,41] are shown in Table 1. Although the sensitivity of the CeO 2 -SnO 2 sensor is higher than that of the reported results, the optimum operating temperature has not been improved very well.…”

Section: Resultsmentioning

confidence: 93%

“…Hence, researchers use another MOS doped SnO 2 to improve its gas sensitivity. For example, Zhai et al [28] prepared Au-loaded ZnO/SnO 2 heterostructure, this sensor not only reduces the optimum operating temperature of SnO 2 but also has a higher response to TEA than pure SnO 2 . Yang et al [24] synthesized porous SnO 2 /Zn 2 SnO 4 composites and their response to 100 ppm of TEA was about 2–3 times higher than that of pure SnO 2 .…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of CeO2-SnO2 Nanoflowers for Improving Triethylamine Gas Sensing Property

et al. 2018

View full text Add to dashboard Cite

Developing the triethylamine sensor with excellent sensitivity and selectivity is important for detecting the triethylamine concentration change in the environment. In this work, flower-like CeO2-SnO2 composites with different contents of CeO2 were successfully synthesized by the one-step hydrothermal reaction. Some characterization methods were used to research the morphology and structure of the samples. Gas-sensing performance of the CeO2-SnO2 gas sensor was also studied and the results show that the flower-like CeO2-SnO2 composite showed an enhanced gas-sensing property to triethylamine compared to that of pure SnO2. The response value of the 5 wt.% CeO2 content composite based sensor to 200 ppm triethylamine under the optimum working temperature (310 °C) is approximately 3.8 times higher than pure SnO2. In addition, CeO2-SnO2 composite is also significantly more selective for triethylamine than pure SnO2 and has better linearity over a wide range of triethylamine concentrations. The improved gas-sensing mechanism of the composites toward triethylamine was also carefully discussed.

show abstract

“…The sensing materials, working temperature, response and detection limit of these sensors are investigated. Compared to the previously reported SnO 2 ‐based sensors, the sensor based on IWBT possesses outstanding sensing properties toward TEA, including the highest response value and the lowest detection limit …”

Section: Resultsmentioning

confidence: 99%

“…Triethylamine (TEA), a colorless transparent liquid with strong ammonia smell, is toxic, flammable and explosive . TEA is a raw chemical material in industrial, it can also be released from the dead fishes and the concentration of TEA is increased with the decay of seafoods .…”

Section: Introductionmentioning

confidence: 99%

Oxygen Vacancies Enhance Triethylamine Sensing Properties of SnO₂ Nanoparticles

Meng

Yao

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

In this paper, tin oxide (SnO2) nanoparticles with abundant oxygen vacancies (OVs) (designated as IWBT) were synthesized via a combined hydrothermal route and ice‐water bath stirring method. In addition, another SnO2 nanoparticles (designated as RTT) were prepared by the room temperature stirring synthesis and subsequent hydrothermal process. The morphology and composition of the as‐obtained samples were characterized by X‐ray diffraction (XRD), field‐emission scanning electron microscopy (FESEM), X‐ray photoelectron spectroscopy (XPS) and Brunauer‐Emmett‐Teller (BET) analysis. It was found that IWBT contained much more surface oxygen vacancies defects than RTT. The synthesized IWBT exhibited outstanding gas sensing properties toward triethylamine (TEA) at 260 °C, such as high response, significant selectivity, low detection limit and excellent repeatability. According to the results of experiments, the response of as‐prepared IWBT sensor could reach to 2701.36 when exposed to 500 ppm TEA, which was far higher than the as‐prepared RTT sensor (748.10). The excellent sensing characteristics of IWBT could be attributed to the abundant OVs that could improve the O2 adsorptivity and electron transfer capability of SnO2. Thus, IWBT supplied a rational strategy to enhance the gas sensing performances of TEA gas sensors.

show abstract

Low-temperature in-situ growth of SnO2 nanosheets and its high triethylamine sensing response by constructing Au-loaded ZnO/SnO2 heterostructure

Cited by 76 publications

References 47 publications

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Hydrothermal Synthesis of CeO2-SnO2 Nanoflowers for Improving Triethylamine Gas Sensing Property

Oxygen Vacancies Enhance Triethylamine Sensing Properties of SnO₂ Nanoparticles

Contact Info

Product

Resources

About

Low-temperature in-situ growth of SnO2 nanosheets and its high triethylamine sensing response by constructing Au-loaded ZnO/SnO2 heterostructure

Cited by 76 publications

References 47 publications

Synthesis of Core‐Shell Au@TiO2@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Synthesis of Core‐Shell Au@TiO2@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Hydrothermal Synthesis of CeO2-SnO2 Nanoflowers for Improving Triethylamine Gas Sensing Property

Oxygen Vacancies Enhance Triethylamine Sensing Properties of SnO2 Nanoparticles

Contact Info

Product

Resources

About

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Synthesis of Core‐Shell Au@TiO₂@C Nanoparticles and Their Photocatalytic Properties for the Degradation of Rhodamine B Under Simulated‐Solar Light

Oxygen Vacancies Enhance Triethylamine Sensing Properties of SnO₂ Nanoparticles