Cerium-based hybrid nanorods for synergetic photo-thermocatalytic degradation of organic pollutants

Huang, Yongchao; Lu, Yirui; Lin, Ying; Mao, Yanchao; Ouyang, Gangfeng; Liu, Hong; Zhang, Shanqing; Tong, Yexiang

doi:10.1039/c8ta06565a

Cited by 166 publications

(77 citation statements)

References 44 publications

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“…The degradation reaction of MB and TC will be carried out here. The electrons react with oxygen to form O 2 − , which reacts with water or protons to form O 2 • and HO 2 , and then continues to form OH − and •OH . These free radicals have a strong oxidizing power and can oxidize and decompose organic matter until they are completely mineralized into CO 2 and H 2 O …”

Section: Resultsmentioning

confidence: 99%

Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Liu

Zhang

et al. 2019

ChemistrySelect

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ZnO/Co3O4 hollow microsphere was prepared by an impregnation method using lotus pollen as biotemplate for photocatalytic degradation of methylene blue (MB) and tetracycline (TC). This material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), UV‐Vis diffuse reflectance spectroscopy (UV‐Vis DRS), N2 physical adsorption and X‐ray photoelectron (XPS). The results show that it can replicate the spherical morphology of pollen and form a hollow microsphere after the calcination in air with the diameter of about 25 μm and the wall thickness of about 2 μm. Under the irradiation using a xenon lamp, the degradation rate of MB was 95% in 90 minutes, and the degradation rate of TC was 90% in 60 minutes. Compared with pure ZnO or Co3O4 microspheres prepared by the same method, the photocatalytic performance of ZnO/Co3O4 hollow microsphere is superior, because of synergistic effect between Co and Zn and enhanced electron transfer. In addition, ZnO/Co3O4 hollow microsphere exhibits high reusability without significant decrease of the degradation activities of MB and TC after four cycles.

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Section: Resultsmentioning

confidence: 99%

Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Liu

Zhang

et al. 2019

ChemistrySelect

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“…Semiconductor photocatalysis is currently considered as an advanced technology to convert solar energy for photosplitting water, photoreducing CO 2 , and photodegrading toxic pollutants . Among them, the treatment of toxic pollutants is still very concerned.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloyed BiOCl_xBr_1‐x Nanosheets Thickness on the Photocatalytic Performance

Leng

et al. 2019

ChemistrySelect

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Promoting the separation of electrons and holes for photocatalysis is still challenging. In this paper, alloyed BiOCl x Br 1-x nanosheets are synthesized to enhance the separation of electrons and holes by means of adjusting the thickness and the exposing specific crystal facet of nanosheet. SEM shows that the average thicknesses of samples are in the range of 34.7 to 47.2 nm. TEM analysis demonstrates that alloyed nanosheets obtained by codeposition method at room temperature have an exposure of (001) facet. Compared with pure BiOCl or BiOBr nanosheets, BiOCl x Br 1-x nanosheets exhibit a greatly enhanced photocatalytic activity for degrading RhB. In addition, BiOCl 0.5 Br 0.5 (BC5) sample with nanosheet thickness of 34.7 nm displays the highest photocatalytic activity, which is 17-time higher than that of pure BiOCl or BiOBr nanosheets. The superior photoactivity of BiOCl x Br 1-x nanosheets is attributed to the diverse light absorption, alloyed effect and different diffusion distance along [001] orientation. This study presents a 2D photocatalyst for degrading toxic pollutants to remedy environmental pollution. The revealing about the effect of thickness on photocatalytic properties could provide a new method to study the photoelectric properties related to 2D nanomaterials.[a] X.

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“…Figure 5c illustrates the N 1s spectrum, in which four types of nitrogen atoms with different chemical states were detected. 28 The peak at 400.2 eV is assigned to the −N 3 group in GAP molecules. The peaks at 400.6 and 404.2 eV correspond to the −NO 2 and C–N in HNS molecules.…”

Section: Results and Discussionmentioning

confidence: 99%

Electrospinning Preparation of NC/GAP/Submicron-HNS Energetic Composite Fiber and its Properties

Wang¹,

Luo²,

Song³

et al. 2019

ACS Omega

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In this work, novel three-dimensional nitrocellulose/glycidyl azide polymer/submicron-2,2′, 4,4′, 6,6′-hexanitro-stilbene (NC/GAP/submicron-HNS) composite fibers were prepared by the electrospinning method. As-prepared NC/GAP/submicron-HNS fibers were continuous and possessed a large specific surface area. The structure of fibers was characterized by energy-dispersive X-ray, X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy (IR). The results showed that HNS submicron particles were uniformly loaded on the surface of NC/GAP fibers and incorporated with it. Thermal analyses were performed. Such NC/GAP/submicron-HNS fibers showed a low activation energy of 204 kJ·mol–1 and large rate constant of 1.74 s–1, indicating high reactivity and fast reaction rate. The result of TG-IR analysis revealed that the main decomposition products of NC/GAP/submicron-HNS were CO2, CO, H2O, N2O, few NO, and fragments such as −CH2O– and −CH–, which were low-signature gases. An evaluation on the energy performance disclosed that the standard specific impulse (Isp) of NC/GAP/submicron-HNS fibers was 2032 N·s·kg–1, which was higher than 2014 N·s·kg–1 of NC/GAP. This meant the addition of HNS submicron particles to the NC/GAP fiber was favorable to the improvement of energy performance. Additionally, introduction of submicron-HNS made the energetic fibers becoming very insensitive to impact action. It was expected that as-prepared NC/GAP/submicron-HNS membranes were promising materials applied for solid rocket propellant.

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Cerium-based hybrid nanorods for synergetic photo-thermocatalytic degradation of organic pollutants

Abstract: Phase boundary engineered CeO2/CeN is synthesized and used as a high performance photocatalyst for photo-thermocatalytic degradation of organic pollutants in wastewater.

Cited by 166 publications

References 44 publications

Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Effect of Alloyed BiOCl_xBr_1‐x Nanosheets Thickness on the Photocatalytic Performance

Electrospinning Preparation of NC/GAP/Submicron-HNS Energetic Composite Fiber and its Properties

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Cerium-based hybrid nanorods for synergetic photo-thermocatalytic degradation of organic pollutants

Abstract: Phase boundary engineered CeO2/CeN is synthesized and used as a high performance photocatalyst for photo-thermocatalytic degradation of organic pollutants in wastewater.

Cited by 166 publications

References 44 publications

Preparation Of ZnO/Co3O4 Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Preparation Of ZnO/Co3O4 Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Effect of Alloyed BiOClxBr1‐x Nanosheets Thickness on the Photocatalytic Performance

Electrospinning Preparation of NC/GAP/Submicron-HNS Energetic Composite Fiber and its Properties

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Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Preparation Of ZnO/Co₃O₄ Hollow Microsphere By Pollen‐biological Template And Its Application In Photocatalytic Degradation

Effect of Alloyed BiOCl_xBr_1‐x Nanosheets Thickness on the Photocatalytic Performance