NaCl-assisted synthesis of Fe2+ self-doped Fe2O3/C3N4 nanosheets as efficient Fenton catalyst

Shi, Xiaodong; Li, Xiangbin; Liu, Guolei; Du, Mengqi; Zhang, Jian; Liu, Guodong; Lu, Qifang

doi:10.1007/s10853-020-04775-4

Cited by 18 publications

(15 citation statements)

References 54 publications

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“…3(c)). 31,32 The O 1s peak has three deconvolution peaks at 531.9, 532.8 and 530.7 eV in Fig. 3(d), corresponding to the bonds of C–O, CO and Fe–O–C, respectively.…”

Section: Resultsmentioning

confidence: 99%

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A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

et al. 2022

RSC Adv.

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“…3(c)). 31,32 The O 1s peak has three deconvolution peaks at 531.9, 532.8 and 530.7 eV in Fig. 3(d), corresponding to the bonds of C–O, CO and Fe–O–C, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…3(c)). 31,32 The O 1s peak has three deconvolution peaks at 531.9, 532.8 and 530.7 eV in Fig. 3(d electron transfer and migration between interfaces.…”

Section: Heterogeneous Photo-fenton Degradation and Radical Oxygen Sp...mentioning

confidence: 98%

A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

et al. 2022

RSC Adv.

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“…On the high-resolution Fe elemental spectrum ( Figure 3(b) ), there are two major peaks at the binding energy 711.2 and 724.7 eV corresponding to Fe 3+ 2 p 3/ 2 and Fe 3+ 2 p 1/2 , respectively. These two peaks are characteristics of the Fe 3+ oxidation state as observed on the XPS spectrum of Fe 2 O 3 oxide [ 42 , 43 ]. Besides, two satellite peaks can be detected at positions 718.2 and 731.0 eV.…”

Section: Resultsmentioning

confidence: 99%

“…In the N1s spectrum ( Figure 3(d) ), the peak deconvolution shows the presence of 3 peaks at 399.0, 400.3, and 401.2 eV, which correspond to Sp 2 bonded N in triazine ring (C–N= C ), the tertiary nitrogen N-(C) 3 group in the heptazine structure, and N in the C–N–H group, respectively [ 39 , 40 ]. For the oxygen element ( Figure 3(c) ), the peak deconvolution of O1s indicates the existence of three components: lattice oxygen of Fe–O bond (529.7 eV), oxygen of surface hydroxyl–OH (531.0 eV), and the one of adsorbed water H 2 O (533.3 eV) [ 43 ]. Hence, the results of XPS, XRD, and IR proved that γ -Fe 2 O 3 /g-C 3 N 4 composites were successfully synthesized.…”

Section: Resultsmentioning

confidence: 99%

Photoreduction of CO2 to CH4 over Efficient Z-Scheme $γ$ -Fe2O3/g-C3N4 Composites

Nguyen

Thi

Minh

et al. 2022

Journal of Analytical Methods in Chemistry

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A series of composite γ-Fe2O3/g-C3N4 (denoted as xFeCN with x equal 5, 10, 15, and 20 of γ-Fe2O3 percentage in weight) was prepared by calcination and precipitation-impregnation methods. X-ray diffraction (XRD), Fourier transform infrared (FTIR), and X-ray photoelectron spectrometry (XPS) characterizations indicated the successful synthesis of Z-scheme FeCN composites. A red shift of the light absorption region was revealed by UV-vis diffuse reflectance spectroscopy (UV-DRS). In addition, photoluminescence spectroscopy (PL) spectra showed an interface interaction of two phases Fe2O3 and g-C3N4 in the synthesized composites that improved the charge transfer capacity. The photocatalytic activity of these materials was studied in the photoreduction of CO2 with H2O as the reductant in the gaseous phase. The composites exhibited excellent photoactivity compared to undoped g-C3N4. The CH4 production rate over 10FeCN and 15FeCN composites (2.8 × 10−2 and 2.9 × 10−2 μmol h−1 g−1, respectively) was ca. 7 times higher than that over pristine g-C3N4 (0.4 × 10−2 μmol h−1 g−1). This outstanding photocatalytic property of these composites was explained by the light absorption expansion and the prevention of photogenerated electron-hole pairs recombination due to its Z-scheme structure.

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“…35−37 The O 1s spectra of Fe 2 O 3 show only two contributions, which are denoted as 528.3 and 529.1 eV. According to the literature, the peak at 528.3 eV corresponds to the presence of crystal lattice oxygen, 34,38 while the peak located at 529.1 eV infers the presence of oxygen vacancies or defects. 39 Since there is no peak observed after 531 eV, we can infer that there is no chemisorbed oxygen in the material.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Polymeric Carbon Nitride/Iron Oxide Composites: A Novel Class of Catalysts with Reduced Metal Content for Ammonium Perchlorate Thermal Decomposition

2022

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The ever-growing number of space launches triggering an enormous release of metallic dead weight into the atmosphere has become a global concern. Despite technological advancements, the inclusion of environmental concerns in space research has become the need of the hour. Here, we report the impact of iron oxide (Fe2O3)-doped polymeric carbon nitride (gCN) composites with varying metal contents (namely, GF1, GF2, and GF3 with iron contents of 0.1, 0.25, and 2 mmol, respectively) as a new class of catalysts for ammonium perchlorate (AP) thermolysis. Morphology studies revealed the dendritic morphology of the synthesized Fe2O3, and X-ray photoelectron spectroscopy (XPS) analysis confirmed the effective interaction between Fe2O3 and gCN in the composites. Among all of the synthesized composites, GF2 shows superior catalytic competence toward AP decomposition by amalgamating the double-stage decomposition process into a single stage followed by a considerable decrease in the decomposition temperature. The kinetic parameters calculated for the thermal decomposition of AP with and without catalysts using the KAS method substantiated the above results by significantly reducing the activation energy from 173.2 to 151.7 kJ/mol. Later, thermogravimetric and mass-spectrometric (TG-MS) analysis gives a clear idea about the catalytic efficiency of the synthesized catalyst GF2 toward AP decomposition from the accelerated emission of decomposition products NO, NO2, Cl, HCl, Cl2, and N2O in the presence of GF2. In a nutshell, gCN/Fe2O3 will open up new horizons in the field of synthesis of new catalytic systems with minimal metal content for composite solid propellants.

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NaCl-assisted synthesis of Fe2+ self-doped Fe2O3/C3N4 nanosheets as efficient Fenton catalyst

Cited by 18 publications

References 54 publications

A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

Photoreduction of CO2 to CH4 over Efficient Z-Scheme $γ$ -Fe2O3/g-C3N4 Composites

Polymeric Carbon Nitride/Iron Oxide Composites: A Novel Class of Catalysts with Reduced Metal Content for Ammonium Perchlorate Thermal Decomposition

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NaCl-assisted synthesis of Fe2+ self-doped Fe2O3/C3N4 nanosheets as efficient Fenton catalyst

Cited by 18 publications

References 54 publications

A type II heterojunction α-Fe2O3/g-C3N4 for the heterogeneous photo-Fenton degradation of phenol

A type II heterojunction α-Fe2O3/g-C3N4 for the heterogeneous photo-Fenton degradation of phenol

Photoreduction of CO2 to CH4 over Efficient Z-Scheme γ -Fe2O3/g-C3N4 Composites

Polymeric Carbon Nitride/Iron Oxide Composites: A Novel Class of Catalysts with Reduced Metal Content for Ammonium Perchlorate Thermal Decomposition

Contact Info

Product

Resources

About

A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

A type II heterojunction α-Fe₂O₃/g-C₃N₄ for the heterogeneous photo-Fenton degradation of phenol

Photoreduction of CO2 to CH4 over Efficient Z-Scheme $γ$ -Fe2O3/g-C3N4 Composites