Porous ceramics based on hybrid inorganic tetrapodal networks for efficient photocatalysis and water purification

Gröttrup, Jorit; Schütt, Fabian; Smazna, Daria; Lupan, Oleg; Adelung, Rainer; Mishra, Yogendra Kumar

doi:10.1016/j.ceramint.2017.08.008

Cited by 80 publications

(31 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Amongst SNMs, zinc oxide (ZnO) nanoparticles (NPs) have proven to be a highly promising photocatalyst, under ultra-violet (UV) as well as solar light irradiations [1]. ZnO has a direct wide band gap energy of ~ 3.37 eV and has numerous applications due to its nano-and microstructural properties [11][12][13]. The various applications and multidimensional properties of ZnO NPs have been elaborately discussed by Mishra et al [14].…”

Section: Introductionmentioning

confidence: 99%

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Basnet

Samanta

Chanu³

et al. 2019

SN Appl. Sci.

View full text Add to dashboard Cite

Tuning the photocatalytic property of zinc oxide (ZnO) nanoparticles (NPs) is timely. Dependence of photocatalysis upon size, morphology and effective surface area of the particles used has led to optimization in various synthesis procedures. The current article addresses to dictate a cost-effective, bio-friendly, modified ease-process for this issue. The synthesis of ZnO NPs with differing photophysical properties, sizes and morphologies, in order to tune its photocatalytic activity, have been extensively studied. Polyethylene glycol as the structure directing agent and different synthesis strategies were adopted. Spectroscopic and microscopic characterization techniques were employed to understand the nature of the as-synthesized samples. Photocatalytic property and photostability of the samples were determined based on experiments performed with common xanthene and azo dyes. Based on analysing the results, certain characteristics, such as smaller particle size, less agglomerated structure, higher surface area and superior lifetime of the photogenerated electrons and holes upon light illumination, were essential for ZnO NPs to act as an efficient photocatalyst.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Basnet

Samanta

Chanu³

et al. 2019

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…Among these porous materials, the porous ceramics as rising stars have drawn extensive attention owing to their anti-oxidation, low thermal expansion, and chemical and physical durability characteristics [6,7]. Therefore, they are strongly relevant for a series of applications, such as catalytic reactor, filtration, thermal energy storage, water treatment, and MAMs [8][9][10][11]. According to the previous studies, the SiOC ceramics are considered as promising candidates for MA applications because of their amorphous phases (the complex components of SiOC, SiO x , and free carbon), low cost, and lightweight features [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanofibers Propped Hierarchical Porous SiOC Ceramics Toward Efficient Microwave Absorption

et al. 2020

View full text Add to dashboard Cite

The hierarchical porous SiOC ceramics (HPSCs) have been prepared by the pyrolysis of precursors (the mixture of dimethicone and KH-570) and polyacrylonitrile nanofibers (porous template). The HPSCs possess hierarchical porous structure with a BET surface area of 51.4 m 2 /g and have a good anti-oxidation property (only 5.1 wt.% weight loss). Owing to the porous structure, the HPSCs deliver an optimal reflection loss value of − 47.9 dB at 12.24 GHz and an effective absorption bandwidth of 4.56 GHz with a thickness of 2.3 mm. The amorphous SiOC, SiO x , and free carbon components within SiOC make contributions to enhancing dipolar polarization. Besides, the abundant interfaces between SiOC and carbon nanofibers (CNFs) are favorable for improving interfacial polarization. The conductive loss arisen from cross-linked CNFs can also boost the microwave absorption performance.

show abstract

“…Nanometer ZnO is a multifunctional semiconductor material that is widely applied as a photocatalyst . ZnO photocatalyst is used to degrade organic pollutants in industrial wastewater .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity of ZnO Toward the Degradation of Methylene Blue Dye: Effects of Fe³⁺ and Sn⁴⁺ Doping

Luo

et al. 2019

Physica Status Solidi (a)

View full text Add to dashboard Cite

ZnO, Fe 0.01 ZnO, Sn 0.05 ZnO, and Fe 0.01 Sn 0.01 ZnO photocatalysts are prepared by a simple low-temperature solution method using Zn(NO 3 ) 2 , Fe(NO 3 ) 3 , SnCl 4 , and NaOH as raw materials. X-ray diffraction, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer-Emmett-Teller surface area analysis, X-ray photoelectron spectroscopy, ultraviolet-visible diffusion spectroscopy, and photoluminescence spectroscopy are performed to characterize the products. All doped ZnO samples exhibit enhanced photocatalytic activity compared with undoped ZnO toward methylene blue (MB) degradation. In particular, Sn 0.05 ZnO shows excellent performance among the doped samples. The degradation rate of MB by Sn 0.05 ZnO reaches 99.61% after 120 min of illumination, which is approximately 2.2 times as high as that by undoped ZnO (45.88%). A comparison of the photocatalytic activity of the samples reveals the effects of Fe 3þ and Sn 4þ doping on the photocatalytic performance of ZnO on the basis of the following aspects: formation of impurity level, particle size, and pore structure of catalyst, microstructural changes in the crystal, and action of doped ions.

show abstract

Porous ceramics based on hybrid inorganic tetrapodal networks for efficient photocatalysis and water purification

Cited by 80 publications

References 58 publications

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Carbon Nanofibers Propped Hierarchical Porous SiOC Ceramics Toward Efficient Microwave Absorption

Enhanced Photocatalytic Activity of ZnO Toward the Degradation of Methylene Blue Dye: Effects of Fe³⁺ and Sn⁴⁺ Doping

Contact Info

Product

Resources

About

Porous ceramics based on hybrid inorganic tetrapodal networks for efficient photocatalysis and water purification

Cited by 80 publications

References 58 publications

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Assessment of synthesis approaches for tuning the photocatalytic property of ZnO nanoparticles

Carbon Nanofibers Propped Hierarchical Porous SiOC Ceramics Toward Efficient Microwave Absorption

Enhanced Photocatalytic Activity of ZnO Toward the Degradation of Methylene Blue Dye: Effects of Fe3+ and Sn4+ Doping

Contact Info

Product

Resources

About

Enhanced Photocatalytic Activity of ZnO Toward the Degradation of Methylene Blue Dye: Effects of Fe³⁺ and Sn⁴⁺ Doping