Hydrothermal synthesis of hierarchical SnO2 nanomaterials for high-efficiency detection of pesticide residue

Cai, Haijie; Qiao, Xiaopeng; Chen, Meilian; Feng, Dongsheng; Alghamdi, Abdulaziz; Alharthi, Fahad A.; Pan, Yingjie; Zhao, Yong; Zhu, Yongheng; Deng, Yonghui

doi:10.1016/j.cclet.2020.10.029

Cited by 23 publications

(19 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…40 indicating a good purity of the obtained samples. 15 As shown in Figure 3a, both pristine α-Fe 2 O 3 NCs and 1.0 wt % Au@Pt/ α-Fe 2 O 3 NCs exhibited Fe 2p 3/2 (710.6 eV) and Fe 2p 1/2 (724.2 eV, gap = 13.6 eV) peaks, with two shake-up satellite peaks. The split width (13.6 eV) indicated that a trivalent iron ion (Fe 3+ ) existed, 42,43 which was also illustrated in XRD (Figure 1).…”

Section: Introductionmentioning

confidence: 91%

“…Mesoporous metal oxides with hollow structures usually can be conducive to gas diffusion. 15 They are promising candidates to fabricate efficient gas sensors. However, pristine α-Fe 2 O 3 materials have been rarely used because the commonly used α-Fe 2 O 3 shows high working temperature, high intrinsic resistance value, and poor stability.…”

Section: Introductionmentioning

confidence: 99%

“…The electrons of α-Fe 2 O 3 were easier to transition from the valence state to the conduction band. 15 Such a decrescent band gap was due to the modification of Au@Pt nanocrystals introduced by oxygen vacancies, which affected the electronic structure of α-Fe 2 O 3 NCs. 15 To investigate the impact of bimetallic Au@Pt modification on the specific surface area of sensitive materials, the pristine α-Fe 2 O 3 NCs and 1.0 wt % Au@Pt/α-Fe 2 O 3 NCs were calculated via nitrogen sorption isotherms (Figure S4).…”

Section: Introductionmentioning

confidence: 99%

“…15 Such a decrescent band gap was due to the modification of Au@Pt nanocrystals introduced by oxygen vacancies, which affected the electronic structure of α-Fe 2 O 3 NCs. 15 To investigate the impact of bimetallic Au@Pt modification on the specific surface area of sensitive materials, the pristine α-Fe 2 O 3 NCs and 1.0 wt % Au@Pt/α-Fe 2 O 3 NCs were calculated via nitrogen sorption isotherms (Figure S4). The pristine α-Fe 2 O 3 NCs (a) and 1.0 wt % Au@Pt/α-Fe 2 O 3 NCs (b) both displayed type IV adsorption isotherm, indicating the mesoporous framework.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Shen

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

In this work, we present a new metal oxide semiconductor gas sensor for detecting trimethylamine (TMA) by bimetal Au@Pt-modified α-Fe2O3 hollow nanocubes (NCs) as sensing materials. The structure and morphological characteristics of Au@Pt/α-Fe2O3 were evaluated through multiple analyses, and their gas-sensitive performance was investigated. Compared with the pristine α-Fe2O3 NC sensor, the sensor based on Au@Pt/α-Fe2O3 NCs exhibited faster response time (5 s) and higher response (R a/R g = 32) toward 100 ppm TMA gas at a lower temperature (150 °C). Furthermore, we also assessed the Au@Pt/α-Fe2O3 NC sensor for detecting the freshness of Larimichthys crocea which have been observed by headspace solid-phase microextraction and gas chromatography–mass spectrometry. The high performance of the Au@Pt/α-Fe2O3 NCs is attributed to the special hollow morphology with a high specific surface area (212.9 m2/g) and the synergistic effect of the Au@Pt bimetal. The Au@Pt/α-Fe2O3 sensor shows promising application prospects in estimating seafood freshness on the spot.

show abstract

Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Shen

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…41-1445). 31 The peaks at about 37 and 43 are attributed to the (111) and (200) facets of NiO (JCPDS no. 47-1049).…”

Section: Geometric Structure Of the Nisnncsmentioning

confidence: 99%

Direct confirmation of confinement effects by NiO confined in helical SnO₂ nanocoils and its application in sensors

Cuixia

Dong

et al. 2022

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Enhanced Sensing Performance of Sn_XTi_1‐XO₂‐Ti_XSn_1‐XO₂ Core–Shell Heterostructure via Increasing the Density of Unsaturated Sn and Ti Atoms

Liu,

Duan,

Duan

2023

Small Methods

View full text Add to dashboard Cite

The strategy of combining different semiconductor materials is adjudged an effective approach to improve the sensing performances of semiconductor materials. However, the specific synergistic mechanism for the excellent gas‐sensitive performances of composite materials has not been elucidated. Herein, a facile solvothermal method is employed to synthesize SnXTi1‐XO2‐TiXSn1‐XO2 core–shell heterostructures using SnCl4•5H2O and tetrabutyl titanate (TBOT) as raw materials. When the molar ratio of SnCl4•5H2O/TBOT is 1.8/3.0, the afforded composite exhibited the highest gas sensing performances compared with other composites prepared with other molar ratios. The enhanced sensing performance is attributed to the simultaneous incorporation of Sn and Ti ions into each other's lattice, leading to an increase in the density of unsaturated Sn and Ti atoms on the surface. Ultimately, more oxygen vacancies are formed by the unsaturated Sn and Ti atoms, which benefits electron capture and the redox reaction of adsorbed gases. Thus, the concept of increased unsaturated metal atoms and oxygen vacancy resulting from the doping of different metal ions into each other's lattice has deepened the understanding of gas sensing and the catalytic reaction mechanisms. The lattice synergy of different metals provides a pathway for the design of advanced gas‐sensing materials and catalysts.

show abstract

Hydrothermal synthesis of hierarchical SnO2 nanomaterials for high-efficiency detection of pesticide residue

Cited by 23 publications

References 48 publications

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Direct confirmation of confinement effects by NiO confined in helical SnO₂ nanocoils and its application in sensors

Enhanced Sensing Performance of Sn_XTi_1‐XO₂‐Ti_XSn_1‐XO₂ Core–Shell Heterostructure via Increasing the Density of Unsaturated Sn and Ti Atoms

Contact Info

Product

Resources

About

Hydrothermal synthesis of hierarchical SnO2 nanomaterials for high-efficiency detection of pesticide residue

Cited by 23 publications

References 48 publications

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe2O3 Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe2O3 Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Direct confirmation of confinement effects by NiO confined in helical SnO2 nanocoils and its application in sensors

Enhanced Sensing Performance of SnXTi1‐XO2‐TiXSn1‐XO2 Core–Shell Heterostructure via Increasing the Density of Unsaturated Sn and Ti Atoms

Contact Info

Product

Resources

About

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Direct confirmation of confinement effects by NiO confined in helical SnO₂ nanocoils and its application in sensors

Enhanced Sensing Performance of Sn_XTi_1‐XO₂‐Ti_XSn_1‐XO₂ Core–Shell Heterostructure via Increasing the Density of Unsaturated Sn and Ti Atoms