Graphitic carbon nitride grown in situ on aldehyde-functionalized α-Fe2O3: All-solid-state Z-scheme heterojunction for remarkable improvement of photo-oxidation activity

Pan, Lifang; Cao, Shihai; Li, Rui; Chen, Huan; Jiang, Fang; Wang, Xin

doi:10.1016/j.jcis.2019.04.035

Cited by 29 publications

(8 citation statements)

References 46 publications

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“…Therefore, MIL-111/001 with a Z-scheme structure accelerates spatial charge separation 30,31 and changes H 2 O 2 generation from a single-channel pathway to a two-channel pathway.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Zheng

Zhou

et al. 2022

Catal. Sci. Technol.

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“…Therefore, MIL-111/001 with a Z-scheme structure accelerates spatial charge separation 30,31 and changes H 2 O 2 generation from a single-channel pathway to a two-channel pathway.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Zheng

Zhou

et al. 2022

Catal. Sci. Technol.

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“…[28][29][30] Furthermore, although many aspects of the interfacial charge carrier dynamics of α-Fe 2 O 3 /g-C 3 N 4 heterostructures have been identified, certain kinetic aspects of the carrier transfer need further investigation. [31][32][33] In this study, a Z-type nanojunction architecture of α-Fe 2 O 3 /FL g-C 3 N 4 photocatalysts with powerful interfacial charge transfer is rationally designed, in which α-Fe 2 O 3 exposed the {102} and {104} facets. [34] The α-Fe 2 O 3 /FL g-C 3 N 4 composites exhibit remarkably enhanced photocatalytic performance for hydrogen generation and pollutant degradation under visible light irradiation, benefiting from the larger surface area, light absorption and the fast charge transfer on the Z-type heterojunction interface.…”

Section: Introductionmentioning

confidence: 99%

Two‐step calcination synthesis of Z‐scheme α‐Fe₂O₃/few‐layer g‐C₃N₄ composite with enhanced hydrogen production and photodegradation under visible light

Hou

Cui

et al. 2020

J Chinese Chemical Soc

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Solar photocatalytic technology is of great significance for adjusting energy structure and environmental improvement. Developing an efficient and lowcost photocatalyst is key to realizing the conversion of solar to chemical energy. In this study, α-Fe 2 O 3-modified few-layer g-C 3 N 4 hybrids (α-Fe 2 O 3 /FL g-C 3 N 4) were successfully prepared by a two-step calcination route with a mixture of α-Fe 2 O 3 and melamine. The samples were characterized by Thermogravimetric analysis, X-ray diffraction, Fourier transform infrared, scanning electron microscope, transmission electron microscope, High-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, UV-Vis absorption spectrum, photoluminescence, and Timeresolved photoluminescence spectroscopy; furthermore, their photoelectrochemical measurements and their photocatalytic performances were evaluated by visible light-driven hydrogen evolution and degradation of RhB. The results showed that the hydrogen production activity and degradation ability of α-Fe 2 O 3 /FL g-C 3 N 4 were significantly enhanced compared with those of α-Fe 2 O 3 /multilayer g-C 3 N 4 (α-Fe 2 O 3 /ML g-C 3 N 4) and FL g-C 3 N 4. The enhanced photoactivities were mainly attributed to the synergistic effect between the increased visible-light absorption, enhanced surface area, and highly efficient electron transfer and separation on the Z-type heterojunction interface. This work not only provides evidence for the formation of FL g-C 3 N 4 nanosheets using a thermal exfoliation method but also provides new insights into the interfacial charge carrier dynamics of Z-scheme α-Fe 2 O 3 /FL g-C 3 N 4 heterostructures for photocatalytic H 2 generation and pollutant degradation.

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“…X-ray photoelectron spectroscopy (XPS) was performed to demonstrate the electronic state of g-C 3 N 4 /Cu 3 P. The high-resolution XPS spectrum of C 1s in Figure a can be deconvoluted into four independent peaks at 288.6, 288, 286.1, and 284.7 eV, which correspond to −COOH, N–CN, sp 3 C (C–NH 2 ), and sp 2 C (C–C). The fitted peak at 403.9 eV in the XPS spectrum of N 1s in Figure b can be assigned to the charging effects or positive charge localization in the heterocycles and cyano group. − The other three peaks at 401, 399.5, and 398.7 eV were related to free amino groups (C 2 –N–H), tertiary nitrogen group (C 3 –N), and triazine rings (C–NC), respectively. − As shown in Figure c, the XPS spectrum of Cu 2p was divided into five peaks, and the two at 954 and 934 eV are attributed to Cu 2p 1/2 and 2p 3/2 , respectively, which matched well with the Cu 3 P signal. In Figure d, the binding energies at 133 and 129.9 eV correspond to P 2p in Cu 3 P and the peak at 134.1 eV arises from P in the oxidation state after exposure to air …”

Section: Resultsmentioning

confidence: 99%

NIR-Driven Water Splitting H₂ Production Nanoplatform for H₂-Mediated Cascade-Amplifying Synergetic Cancer Therapy

Wang

Ji²,

Shi

et al. 2020

ACS Appl. Mater. Interfaces

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As a newly emerging treatment strategy for many diseases, hydrogen therapy has attracted a lot of attention because of its excellent biosafety. However, the high diffusivity and low solubility of hydrogen make it difficult to accumulate in local lesions. Herein, we develop a H 2 self-generation nanoplatform by in situ water splitting driven by near-infrared (NIR) laser. In this work, core− shell nanoparticles (CSNPs) of NaGdF 4 :Yb,Tm/g-C 3 N 4 /Cu 3 P (UCC) nanocomposites as core encapsulated with zeolitic imidazolate framework-8 (ZIF-8) modified with folic acid as shell are designed and synthesized. Due to the acidresponsive ZIF-8 shell, enhanced permeability and retention (EPR) effect, and folate receptor-mediated endocytosis, CSNPs are selectively captured by tumor cells. Upon 980 nm laser irradiation, CSNPs exhibit a high production capacity of H 2 and active oxygen species (ROS), as well as an appropriate photothermal conversion temperature. Furthermore, rising temperature increases the Fenton reaction rate of Cu(I) with H 2 O 2 and strengthens the curative effect of chemodynamic therapy (CDT). The excess glutathione (GSH) in tumor microenvironment (TME) can deplete positive holes produced in the valence band of g-C 3 N 4 in the g-C 3 N 4 /Cu 3 P Z-scheme heterojunction. GSH also can reduce Cu(II) to Cu(I), ensuring a continuous Fenton reaction. Thus, a NIR-driven H 2 production nanoplatform is constructed for H 2 -mediated cascade-amplifying multimodal synergetic therapy.

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Graphitic carbon nitride grown in situ on aldehyde-functionalized α-Fe2O3: All-solid-state Z-scheme heterojunction for remarkable improvement of photo-oxidation activity

Cited by 29 publications

References 46 publications

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Two‐step calcination synthesis of Z‐scheme α‐Fe₂O₃/few‐layer g‐C₃N₄ composite with enhanced hydrogen production and photodegradation under visible light

NIR-Driven Water Splitting H₂ Production Nanoplatform for H₂-Mediated Cascade-Amplifying Synergetic Cancer Therapy

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Graphitic carbon nitride grown in situ on aldehyde-functionalized α-Fe2O3: All-solid-state Z-scheme heterojunction for remarkable improvement of photo-oxidation activity

Cited by 29 publications

References 46 publications

Photocatalytic production of H2O2 over facet-dependent Ti-MOF

Photocatalytic production of H2O2 over facet-dependent Ti-MOF

Two‐step calcination synthesis of Z‐scheme α‐Fe2O3/few‐layer g‐C3N4 composite with enhanced hydrogen production and photodegradation under visible light

NIR-Driven Water Splitting H2 Production Nanoplatform for H2-Mediated Cascade-Amplifying Synergetic Cancer Therapy

Contact Info

Product

Resources

About

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Photocatalytic production of H₂O₂ over facet-dependent Ti-MOF

Two‐step calcination synthesis of Z‐scheme α‐Fe₂O₃/few‐layer g‐C₃N₄ composite with enhanced hydrogen production and photodegradation under visible light

NIR-Driven Water Splitting H₂ Production Nanoplatform for H₂-Mediated Cascade-Amplifying Synergetic Cancer Therapy