Novel Fe2(MoO4)3/g-C3N4 heterojunction for efficient contaminant removal and hydrogen production under visible light irradiation

Yu, Jingxiong; Nong, Qingyan; Jiang, Xiaole; Liu, Xingzheng; Wu, Ying; He, Yiming

doi:10.1016/j.solener.2016.10.014

Cited by 77 publications

(14 citation statements)

References 56 publications

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“…16 Fe 2 (MoO 4 ) 3 /g-C 3 N 4 0.18No>420 nmref. 17 Au/SnO 2 /g-C 3 N 4 770No>400 nmref. 21 Au/PtO/g-C 3 N 4 16.9No>400 nm182 22 TiO 2 /g-C 3 N 4 74.70.5%>400 nmref.…”

Section: Resultsmentioning

confidence: 99%

“…There is no problem in the feasibility and high efficiency for thermochemical water splitting technology, but further research is needed to reduce costs and achieving efficient recycling. Among them, photocatalytic water splitting is a more efficient pathway to produce hydrogen gas and also does not generate any undesirable byproducts 7–17 . Since the discovery of the Honda-Fujishima effect in 1972 18 , photocatalytic hydrogen production through water splitting has become a promising technology for utilizing renewable solar energy 19–24 .…”

Section: Introductionmentioning

confidence: 99%

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Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Yuping

et al. 2018

Sci Rep

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Due to low charge separation efficiency and poor stability, it is usually difficult for single-component photocatalysts such as graphitic carbon nitride (g-C3N4) and silver chromate (Ag2CrO4) to fulfill photocatalytic hydrogen production efficiently. Z-scheme charge transport mechanism that mimics the photosynthesis in nature is an effective way to solve the above problems. Inspired by photosynthesis, we report Ag2CrO4 nanoparticles-decorated g-C3N4 nanosheet as an efficient photocatalyst for hydrogen evolution reaction (HER) with methanol as sacrificial agent. The formation of Z-scheme g-C3N4/Ag2CrO4 nanosheets photocatalysts could inhibit the recombination of photogenerated electron-hole pairs, promote the generation of hydrogen by photosplitting of water. The experiment results indicate that g-C3N4/Ag2CrO4 nanocomposites present enhanced photocatalytic activity and stability in the H2 evolution of water splitting. And the nanocomposites g-C3N4/Ag2CrO4(23.1%) show the 14 times HER efficiency compared to that of bare g-C3N4.

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“…16 Fe 2 (MoO 4 ) 3 /g-C 3 N 4 0.18No>420 nmref. 17 Au/SnO 2 /g-C 3 N 4 770No>400 nmref. 21 Au/PtO/g-C 3 N 4 16.9No>400 nm182 22 TiO 2 /g-C 3 N 4 74.70.5%>400 nmref.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Yuping

et al. 2018

Sci Rep

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“…The UV-vis spectrum of the photodegradation efficiency of MO by Cu 2 O/ZnO (sample II) with degradation time is shown in Figure 8. The curve [31] demonstrates that the absorption of MO gradually decreases to 0 as the reaction progresses, which indicates that MO has been completely degraded at 3 h. Figure 9 shows the degradation efficiency of the initial concentrations of different MO with Cu 2 O/ZnO (sample II). The curve reveals that the initial concentration of MO has a great effect on the photodegradation.…”

Section: Resultsmentioning

confidence: 97%

Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

Wang

Zhang

Wang

et al. 2018

Science and Engineering of Composite Materials

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ZnO is modified by Cu2O by the process of precipitation and calcination. X-ray diffraction has shown that Cu2O/ZnO catalysts are made of highly purified cubic Cu2O and hexagonal ZnO. Scanning electron microscopy and transmission electron microscopy have shown that ZnO adhered to the surface of Cu2O. Due to the doping of Cu2O, the absorption range of the Cu2O/ZnO catalyst is shifted from the ultraviolet to the visible region due to diffuse reflection. X-ray photoelectron spectroscopy and photoluminescence spectra have confirmed that there is a substantial interaction between the two phases of the resultant catalyst. The degradation efficiency of Cu2O/ZnO on methyl orange solution is obviously enhanced compared to Cu2O and ZnO. The maximum degradation efficiency is 98%. The degradation efficiency is affected by the pH of the solution and initial concentration. After three rounds of recycling, the degradation rate is almost same. This shows a consistent performance of Cu2O/ZnO. The increase in catalytic ability is related to the lattice interaction caused by the doping of Cu2O.

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“…Fabricating heterostructure with the narrow-gap semiconductors to enhance catalytic performance has been widely applied in photocatalysis [12][13][14]. Benefitting from the energy gradient which is originated from the energy band alignment on the interface, the heterostructure can strengthen the separation of the positive and negative carriers and further accelerate the migration of carriers [15][16][17]. Therefore, this method may be available to enhance the pyrocatalytic performance of the pyroelectric materials in theory, which is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

The Enhanced Pyrocatalysis of the Pyroelectric BiFeO3/g-C3N4 Heterostructure for Dye Decomposition Driven by Cold-hot Temperature Alternation

Chen

Yao

et al. 2020

Preprint

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The BiFeO3/g-C3N4 heterostructure, which is fabricated via a simple mixing-calcining method, benefits the significant enhancement of the pyrocatalytic performance. With the growth of the g-C3N4 content in the heterostructure pyrocatalysts from 0 to 25 %, the decomposition ratio of Rhodamine B (RhB) dye after 18 cold-hot temperature fluctuation (25 oC - 65 oC) cycles increases at first and then decreases, reaching a maximum value of ~ 94.2 % at 10% while that of the pure BiFeO 3 is ~ 67.7 %. The enhanced dye decomposition may be due to the fabrication of the heterostructure which strengthens the separation of the positive and negative carriers and further accelerates their migration. The intermediate products in the pyrocatalytic reaction also have been detected and confirmed, which proves the key role of the pyroelectric effect in realizing the dye decomposition using BiFeO3/g-C3N4 heterostructure catalyst. The pyroelectric BiFeO3/g-C3N4 heterostructure shows the potential application in pyrocatalytically degrading dye wastewater.

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Novel Fe2(MoO4)3/g-C3N4 heterojunction for efficient contaminant removal and hydrogen production under visible light irradiation

Cited by 77 publications

References 56 publications

Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

The Enhanced Pyrocatalysis of the Pyroelectric BiFeO3/g-C3N4 Heterostructure for Dye Decomposition Driven by Cold-hot Temperature Alternation

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Novel Fe2(MoO4)3/g-C3N4 heterojunction for efficient contaminant removal and hydrogen production under visible light irradiation

Cited by 77 publications

References 56 publications

Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Bio-inspired Z-scheme g-C3N4/Ag2CrO4 for efficient visible-light photocatalytic hydrogen generation

Photocatalytic activity of Cu2O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

The Enhanced Pyrocatalysis of the Pyroelectric BiFeO3/g-C3N4 Heterostructure for Dye Decomposition Driven by Cold-hot Temperature Alternation

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Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation