TiO2/SiO2 mesoporous microspheres with intelligently controlled texture

Dong, Rulin; Chi, Na; Zhang, Han-ping; Chen, Zhidong; Jin, Changchun

doi:10.1016/j.matdes.2015.09.169

Cited by 21 publications

(8 citation statements)

References 34 publications

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“…For all BFS-TiO 2 samples, no pronounced change was observed in the XRD pattern, except for a lower intensity than that for pure TiO 2 . The lattice aberrances turn bigger for all BFS-TiO 2 containing higher silica content, which is consistent with the literatures [39,40].…”

Section: Structure Of Prepared Supportssupporting

confidence: 92%

“…For all synthetic BFS-TiO2 samples, the new absorption bands at 1100 cm −1 and 960 cm −1 are induced by the stretching vibration of Si-O-Si and Ti-O-Si bonds, respectively. The IR results suggest that BFS-TiO2 is a composite of TiO2 and SiO2, and that Ti-O-Si bond is formed between TiO2 and SiO2 particles [40]. The crystallographic phase shown in Figure 4 can be identified as anatase TiO2, which is in accordance with TEM results.…”

Section: Structure Of Prepared Supportssupporting

confidence: 82%

“…The suppression in crystalline size together with the formation of Ti-O-Si bond proved by FT-IR spectra indicated that SiO 2 is uniformly incorporated into titania lattice and no peaks corresponding to SiO 2 were observed, suggesting the formation of amorphous SiO 2 [40]. Furthermore, the presence of SiO 2 in BFS-TiO 2 does not allow structural changes except for a slight shift towards higher 2θ values due to shrinkage of the pores, thereby stabilizing the meso-structures [41].…”

Section: Structure Of Prepared Supportsmentioning

confidence: 98%

“…According to the Scherrer's formula, the sizes of the anatase crystallites was between 14.9-7.4 nm, as listed in Table 2. The suppression in crystalline size together with the formation of Ti-O-Si bond proved by FT-IR spectra indicated that SiO2 is uniformly incorporated into titania lattice and no peaks corresponding to SiO2 were observed, suggesting the formation of amorphous SiO2 [40]. In order to further understand the structure of BFS-TiO 2 from hydrolysis under different pH values, FT-IR (Fourier Transform Infrared Spectroscopy) spectra were taken for all tested supports ( Figure 3).…”

Section: Structure Of Prepared Supportsmentioning

confidence: 99%

“…For all synthetic BFS-TiO 2 samples, the new absorption bands at 1100 cm´1 and 960 cm´1 are induced by the stretching vibration of Si-O-Si and Ti-O-Si bonds, respectively. The IR results suggest that BFS-TiO 2 is a composite of TiO 2 and SiO 2 , and that Ti-O-Si bond is formed between TiO 2 and SiO 2 particles [40]. In order to further understand the structure of BFS-TiO2 from hydrolysis under different pH values, FT-IR (Fourier Transform Infrared Spectroscopy) spectra were taken for all tested supports ( Figure 3).…”

Section: Structure Of Prepared Supportsmentioning

confidence: 99%

See 4 more Smart Citations

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Tran

Gan

et al. 2016

Catalysts

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Abstract:The study is devoted to developing a rather high-efficiency NH 3 -SCR (selective catalytic reduction) catalyst for NO x removal using TiO 2 -SiO 2 support made from blast furnace slag. Through adjusting hydrolytic pH value of TiOSO 4 solution obtained from acidolysis of slag with 70 wt. % H 2 SO 4 , a series of TiO 2 -SiO 2 mixed oxides was prepared to have different mass ratios of TiO 2 to SiO 2 . The supports are further impregnated with V 2 O 5 and WO 3 to make the SCR catalysts for NO x removal. Characterizing the catalysts show that silica and unavoidable impurities in support prepared from slag were responsible for maintaining their mesoporous structure and the enhancements in the acidity and reducible form of active species on the catalyst surface, which thus rendered the catalysts to have higher NO x reduction capability than catalyst using commercial TiO 2 . Furthermore, the low-cost catalyst prepared from slag-based TiO 2 support possesses good stability, and strong resistance to SO 2 and H 2 O poisoning, which are beneficial to practical deNO x applications.

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Section: Structure Of Prepared Supportssupporting

confidence: 92%

Section: Structure Of Prepared Supportssupporting

confidence: 82%

Section: Structure Of Prepared Supportsmentioning

confidence: 98%

Section: Structure Of Prepared Supportsmentioning

confidence: 99%

Section: Structure Of Prepared Supportsmentioning

confidence: 99%

See 3 more Smart Citations

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Tran

Gan

et al. 2016

Catalysts

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Remediation of Fouling on Painted Steel Roofing via Solar Energy Assisted Photocatalytic Self‐Cleaning Technology: Recent Developments and Future Perspectives

Fernando¹,

Ray²,

Simpson³

et al. 2022

Adv Eng Mater

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Rainwater harvesting on rooves is a sustainable solution for global water scarcity. The contamination of roofing materials due to biological organisms and other environmental pollutants limits the utilization of roof harvested rainwater for domestic and industrial applications. Similarly, roof contamination leads to several aesthetic, functional, and environmental concerns highlighting the importance of developing green self-cleaning technology for roofing applications. Solar-energy-driven semiconductor-based photocatalytic self-cleaning coatings are a promising approach to minimizing roof contamination against both biological and non-biological pollutants. However, the development of such technology on painted steel substrates for long-term outdoor applications has become limited due to the number of challenges are analyzed in this review. Accordingly, challenges, recent developments, and future perspectives of developing and evaluating the performance of photocatalytic self-cleaning coating systems for roofing applications have been critically reviewed in this article analyzing the research findings of recent studies.

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SiO₂@TiO₂:Sm³⁺ with Diverse Phase Structure and Morphology: Photoluminescence and Simulated Solar Light‐Activated Photodegradation Properties

et al. 2019

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Sm3+ doped SiO2@TiO2 nanospheres with diverse morphology have been successfully prepared. The size of SiO2 could be adjusted not only by changing the etching time but also through varying the coating method of TiO2. Sol‐gel and solvothermal methods were adopted to investigate the effect of coating conditions on morphology and properties of the products. Photocatalytic results showed that core‐shell structures obtained by solvothermal method possess the highest photodegradation efficiency, which reached 98% for degradation of methyl orange within 30 min under simulated solar light irradiation. The trapping experiments were performed and the possible photocatalytic mechanism was proposed. Yolk‐shell structures obtained through solvothermal method exhibited the strongest orange‐red emission intensity, however, for the samples obtained through a sol‐gel process, the luminescence intensities of the products showed the oppose trend, which is the result of a combination of light utilization, specific surface area and crystallinity. In addition, the X‐ray diffraction analysis results of products calcined at 900 °C manifested that a certain amount of Sm3+ ions inhibit the formation of rutile phase effectively, but the inhibitory effect is not proportional to its concentration. This article provides deeper insight into photocatalytic and luminescence bi‐functional properties of SiO2@TiO2:Sm3+ nanospheres with diverse morphology obtained through different preparation methods.

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TiO2/SiO2 mesoporous microspheres with intelligently controlled texture

Cited by 21 publications

References 34 publications

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Remediation of Fouling on Painted Steel Roofing via Solar Energy Assisted Photocatalytic Self‐Cleaning Technology: Recent Developments and Future Perspectives

SiO₂@TiO₂:Sm³⁺ with Diverse Phase Structure and Morphology: Photoluminescence and Simulated Solar Light‐Activated Photodegradation Properties

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TiO2/SiO2 mesoporous microspheres with intelligently controlled texture

Cited by 21 publications

References 34 publications

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Upgrading V2O5-WO3/TiO2 deNOx Catalyst with TiO2-SiO2 Support Prepared from Ti-Bearing Blast Furnace Slag

Remediation of Fouling on Painted Steel Roofing via Solar Energy Assisted Photocatalytic Self‐Cleaning Technology: Recent Developments and Future Perspectives

SiO2@TiO2:Sm3+ with Diverse Phase Structure and Morphology: Photoluminescence and Simulated Solar Light‐Activated Photodegradation Properties

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SiO₂@TiO₂:Sm³⁺ with Diverse Phase Structure and Morphology: Photoluminescence and Simulated Solar Light‐Activated Photodegradation Properties