Vis-driven Cu-SnO2 nanoparticles for water remediation – Enhancing of photocatalytic efficiency and other defect-related properties

Podurets, Anastasiia; Beletskii, Evgenii V.; Ubyĭvovk, E. V.; Бобрышева, Н. П.; Osmolowsky, M. G.; Voznesenskiy, Mikhail; Osmolovskaya, O. M.

doi:10.1016/j.matchemphys.2022.126589

Cited by 14 publications

(7 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results reveal that the 3DHPSnO 2 @Cu-6 composite is comprised of Sn, O, Cu. As show in figure 2(c), the high resolution of Sn 3d spectrum discloses that the relatively sharp peaks located at 486.4 and 494.8 eV are corresponded to Sn 3d 5/2 and Sn 3d 3/2 , respectively [44]. The spin energy separation between Sn 3d 3/2 and Sn 3d 5/2 peaks is observed to be 8.4 eV, which is ascribed to the 3d binding energy of Sn 4+ in SnO 2 , without Sn 2+ metallic Sn.…”

Section: Resultsmentioning

confidence: 79%

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Yang,

Zhang,

Zhao

et al. 2023

J. Phys. Energy

View full text Add to dashboard Cite

Rational design and construction of self-supporting anodes with high energy density is an essential part of research in the field of lithium-ion batteries. Tin oxide (SnO2) is restricted in application as a prospective high energy density anode due to inherent low conductivity and huge volume expansion of the charge/discharge process. A new strategy that combines high energy ball milling and modified nonsolvent induced phase separation (NIPS) method was employed to synthesize self-supporting electrodes in which porous SnO2 was encapsulated in a three-dimensional hierarchical porous copper (Cu) shell structure(3DHPSnO2@Cu). This unique structure was constructed due to the different binding energy of the alloy with oxygen, which are -0.91 eV for Cu41Sn11 and -1.17 eV for Cu5.6Sn according to density functional theory （DFT） calculation. 3DHPSnO2@Cu electrodes exhibited excellent discharge capacity with an initial reversible capacity of 4.35 mAh cm-2 and a reversible capacity of 3.13 mAh cm-2 after 300 cycles at a current density of 1.4 mA cm-2. It is attributed that the porous Cu shell encapsulated with porous SnO2 provides buffer volume. Among them, the SnO2-Cu-SnO2 interface increases the electrical conductivity and the porous structure provides ion transport channels. This strategy opens a new pathway in the development of self-supporting electrode materials with high energy density.

show abstract

Section: Resultsmentioning

confidence: 79%

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Yang,

Zhang,

Zhao

et al. 2023

J. Phys. Energy

View full text Add to dashboard Cite

show abstract

“…Since the concentration of vacancies is unknown, our goal was to determine it via a comparison of calculation results with experimental data. In order to relate our calculation with the particular sample, input unit cell parameters were taken from XRD results, according to the developed approach. ,, …”

Section: Methodsmentioning

confidence: 99%

“…In order to relate our calculation with the particular sample, input unit cell parameters were taken from XRD results, according to the developed approach. 21,25,26 Usually, to simulate oxygen vacancies a supercell consisting of 2 × 2 × 2 unit cells with one oxygen atom removed is used. This is what is called a 1 vacancy case.…”

Section: Estimation Of Amount Of Oxygenmentioning

confidence: 99%

“…Concerning the expressed broadened O 1s XPS peaks (Figure S5), the peak split procedure revealed the presence of two components, and it is confirmed that the one with the higher energy corresponds to the oxygen vacancies. 44 According to our research, 21,25,26 the peak area, corresponding to oxygen vacancies, can be taken into account as one of the structural parameters of the samples. The peak areas of oxygen vacancies, named S XPS Peak , are given in Table 1 and discussed in Section 3.3.…”

Section: Synthesis Sno 2 Nanoparticles With Different Amounts Of Oxyg...mentioning

confidence: 99%

“…However, despite the large number of publications on SnO 2 , the question of improving its photocatalytic efficiency of the material remains open. In our previous work, we have shown that the oxygen vacancy/defect ratio works for SnO 2 doped with 3d ,, and 4f metal ions , under visible light, and the maximum number of oxygen vacancies and the minimum number of defects lead to improved photocatalytic activity. At the same time, the solar spectrum does not always provide reproducible results when changing geoposition; moreover, sometimes sewage water plants are located underground.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ultrasmall SnO₂ Nanoparticles: Influence of O-Vacancies on the Photocatalytic Degradation of Dyes

Skripkin,

Podurets,

Kolokolov

et al. 2024

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Synthetic dyes are widely used in various industries, which inevitably leads to increased water pollution. One of the recognized and waste-free techniques for water treatment is photocatalytic purification using semiconductor nanoparticles. However, the debate on how photocatalytic properties can be tuned through structural and morphological parameters using nanoparticle synthesis procedures remains open. In the present work, an approach to regulate UV-light-driven photocatalytic activity of spherical SnO 2 nanoparticles using different structural parameters is demonstrated for the first time. Complex characterization of nanoparticles was provided using physicochemical methods with the help of computational methods. Special attention was paid to the development of a protocol of oxygen vacancy accounting within computer calculations for more realistic modeling of the interaction energy between nanoparticle surfaces and organic dye molecules of different natures. The photocatalysis mechanism was investigated according to the developed protocol, including the study of dye mixture kinetic degradation, dyephotocatalyst complex formation, and the ratio of oxygen vacancies and defects. It was shown that 93% of single dye decomposed in 7 min, and degradation of the dye mixture in a real water sample from Neva River achieved 60% after 40 min. It was possible to establish that this proof-of-concept study based on the combination of experimental and computational approaches can help develop the strategy of the rational design of photocatalysts promising for purification of real water samples.

show abstract

Multifunctional Tb-doped SnO2 based photocatalytic agent for water remediation: Study of defect-related properties

Kolokolov,

Fomkina,

Podurets

et al. 2023

Ceramics International

View full text Add to dashboard Cite

Vis-driven Cu-SnO2 nanoparticles for water remediation – Enhancing of photocatalytic efficiency and other defect-related properties

Cited by 14 publications

References 72 publications

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Ultrasmall SnO₂ Nanoparticles: Influence of O-Vacancies on the Photocatalytic Degradation of Dyes

Multifunctional Tb-doped SnO2 based photocatalytic agent for water remediation: Study of defect-related properties

Contact Info

Product

Resources

About

Vis-driven Cu-SnO2 nanoparticles for water remediation – Enhancing of photocatalytic efficiency and other defect-related properties

Cited by 14 publications

References 72 publications

Tailoring hierarchical porous core–shell SnO2@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Tailoring hierarchical porous core–shell SnO2@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Ultrasmall SnO2 Nanoparticles: Influence of O-Vacancies on the Photocatalytic Degradation of Dyes

Multifunctional Tb-doped SnO2 based photocatalytic agent for water remediation: Study of defect-related properties

Contact Info

Product

Resources

About

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Tailoring hierarchical porous core–shell SnO₂@Cu upon Cu–Sn alloys through oxygen binding energy difference for high energy density lithium-ion storage

Ultrasmall SnO₂ Nanoparticles: Influence of O-Vacancies on the Photocatalytic Degradation of Dyes