Effects of nitrogen content in monocrystalline nano-CeO2 on the degradation of dye in indoor lighting

Sun, Dunlu; Gu, Mingjie; Li, Ruixing; Yin, Shu; Song, Xiaozhen; Zhao, Bin; Li, Chengqiang; Li, Junping; Feng, Zhihai; Sato, Tsugio

doi:10.1016/j.apsusc.2013.05.044

Cited by 37 publications

(21 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, CeO 2 also can serve as an alternative photocatalyst for degradation of dye. 46 The high S BET of mesoporous CeO 2 powders contribute to providing more active adsorption and photocatalytic reaction sites, which favor the augmentation of photocatalytic performance. 47 So, the proposed mesoporous CeO 2 powders in this work have potential to photodegrade high density dye and dye intermediate from industrial effluents.…”

Section: Adsorption Propertiesmentioning

confidence: 99%

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

Zhou

2019

RSC Adv.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Adsorption Propertiesmentioning

confidence: 99%

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

Zhou

2019

RSC Adv.

Self Cite

View full text Add to dashboard Cite

show abstract

“…N-doped CeO 2 has shown photocatalytic activity under visible light in the decomposition of acetaldehyde and other organic compounds [30][31][32] (Fig. 3).…”

Section: N-doped Tio 2 and Ceomentioning

confidence: 99%

Metal oxynitrides as emerging materials with photocatalytic and electronic properties

Fuertes

2015

Mater. Horiz.

141

View full text Add to dashboard Cite

Oxynitrides of transition metals, alkaline earth metals and rare earth metals are intensively investigated as a group of materials to expand and tune the properties of oxides. The differences in polarizability, electronegativity and anion charge of nitrogen and oxygen induce changes in the physical and chemical properties of oxides by nitrogen introduction. The effects on properties arise from the higher covalency of the metal-nitrogen bond and the changes in the energies of electronic levels, and are important in slightly doped nitrogen metal oxides as in stoichiometric oxynitrides. More intense recent progress in oxynitride research has been made in some specific fields such as photocatalysis in water splitting and other processes as the observed small band gaps lead to activity in the visible light range. The stabilization of new perovskite oxynitrides, with the oxidation states of cations tuned by N/O stoichiometry, has led to new magnetic and dielectric materials. The lower electronegativity of nitrogen and larger crystal field splitting induced by N 3À shifts the emission wavelengths of phosphors to the red, and oxynitridosilicates have been investigated as components of white LEDs.

show abstract

“…Following annealing at 500 C for 30 min, the mesoporous polycrystalline CeO 2 nanoshells on ZnO were obtained. 26,27 To date, numerous approaches have been employed to remove AO7 dye from aqueous solution, such as electrochemical techniques, 28 biodegradation processes, 29 photocatalytic oxidations, 30 and adsorptive removal processes using diverse adsorbents. 21 Nabih et al demonstrated an inverse mini-emulsion technique to synthesize mesoporous CeO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Template-free synthesis of mesoporous CeO₂powders by integrating bottom-up and top-down routes for acid orange 7 adsorption

2015

RSC Adv.

Self Cite

View full text Add to dashboard Cite

A combined bottom-up and top-down route was developed for the template-free synthesis of mesoporous CeO 2 powders using Ce(NO 3 ) 3 $6H 2 O, NH 4 HCO 3 , H 2 O 2 , and H 2 O as starting reagents. The flake-like Ce 2 (CO 3 ) 3 $8H 2 O precursor was etched by H 2 O 2 , and CeO 2 nucleated in situ with built-in equiaxed particles. Pores formed on the flakes owing to the loss of by-products of H 2 O and CO 2 . The formation of the mesostructured CeO 2 could also be explained by the large change in volume induced as a result of the difference in density between Ce 2 (CO 3 ) 3 $8H 2 O and CeO 2 . Accordingly, the original flake-like morphology of Ce 2 (CO 3 ) 3 $8H 2 O was not preserved upon pore formation and during continuous stirring in the synthesis. A subsequent hydrothermal treatment destroyed the loose aggregates of CeO 2 derived from the reaction between H 2 O 2 and Ce 2 (CO 3 ) 3 $8H 2 O. Rearrangement of the CeO 2 particles via a dissolution-recrystallization process occurred under certain temperatures and pressures. Consequently, CeO 2 particles with coarser sizes, smoother surfaces, and mesoporous structures were obtained. The specific surface area of the particles was 166.5 m 2 g À1 after hydrothermal treatment at 200 C for 24 h. The mesoporous CeO 2 particles possessed better adsorption capacities of acid orange 7 dye than basic orange 2 dye in the absence of pH pre-adjustments. The saturated adsorption amount of acid orange 7 dye was 510.2 mg g À1 at 298 K based on Langmuir linear fitting of the experimental data.

show abstract

Effects of nitrogen content in monocrystalline nano-CeO2 on the degradation of dye in indoor lighting

Cited by 37 publications

References 21 publications

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

Metal oxynitrides as emerging materials with photocatalytic and electronic properties

Template-free synthesis of mesoporous CeO₂powders by integrating bottom-up and top-down routes for acid orange 7 adsorption

Contact Info

Product

Resources

About

Effects of nitrogen content in monocrystalline nano-CeO2 on the degradation of dye in indoor lighting

Cited by 37 publications

References 21 publications

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO2 powders and their adsorption for acid orange 7

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO2 powders and their adsorption for acid orange 7

Metal oxynitrides as emerging materials with photocatalytic and electronic properties

Template-free synthesis of mesoporous CeO2powders by integrating bottom-up and top-down routes for acid orange 7 adsorption

Contact Info

Product

Resources

About

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

An eco-friendly route for template-free synthesis of high specific surface area mesoporous CeO₂ powders and their adsorption for acid orange 7

Template-free synthesis of mesoporous CeO₂powders by integrating bottom-up and top-down routes for acid orange 7 adsorption