Plasmonic photocatalyst Au/g-C3N4/NiFe2O4 nanocomposites for enhanced visible-light-driven photocatalytic hydrogen evolution

Zeng, Jian; Song, Ting; Lv, Meixiang; Wang, Tingting; Qin, J.; Zeng, Heping

doi:10.1039/c6ra08356k

Cited by 149 publications

(62 citation statements)

References 70 publications

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“…Its effectivity promotes the separation and transmission of photogenerated charges, reduces the recombination rate of photogenerated carriers in semiconductors, and enhances photocatalytic efficiency. These heterogeneous such as precious metal precipitation (Au, Pt, Pd, Ag), nonmental deposition (S, Br, B), semiconductor heterojunction modification (such as: TiO 2 , WO 3 , BiOBr, CdS), which can greatly widen the application of the g‐C 3 N 4 ‐based nanomaterials. Although several cocatalysts have been introduced into the photocatalytic system, the efficiency of photocatalytic hydrogen production needs to be further improved.…”

Section: Introductionmentioning

confidence: 99%

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

et al. 2019

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In this work, cobalt phosphide (CoP) nanoparticles were successfully decorated on an ultrathin g‐C3N4 nanosheet photocatalysts by in situ chemical deposition. The built‐in electric field formed by heterojunction interface of the CoP/g‐C3N4 composite semiconductor can accelerate the transmission and separation of photogenerated charge‐hole pairs and effectively improve the photocatalytic performance. TEM, HRTEM, XPS, and SPV analysis showed that CoP/g‐C3N4 formed a stable heterogeneous interface and effectively enhanced photogenerated electron‐hole separation. UV‐vis DRS analysis showed that the composite had enhanced visible light absorption than pure g‐C3N4 and was a visible light driven photocatalyst. In this process, NaH2PO2 and CoCl2 are used as the source of P and Co, and typical preparation of CoP can be completed within 3 hours. Under visible light irradiation, the optimal H2 evolution rate of 3.0 mol% CoP/g‐C3N4 is about 15.1 μmol h−1. The photocatalytic activity and stability of the CoP/g‐C3N4 materials were evaluated by photocatalytic decomposition of water. The intrinsic relationship between the microstructure of the composite catalyst and the photocatalytic performance was analyzed to reveal the photocatalytic reaction mechanism.

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Section: Introductionmentioning

confidence: 99%

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

et al. 2019

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“…Finally, the Ni 2p testing result in Figure ‐f show two strong peaks correspoinding to the BE of 855.85 eV and 873.76 eV, which are originated from Ni 2p 3/2 and Ni 2p 1/2 of Ni 2+ in the Ni 2 P co‐catalyst . The two satellite peaks are situated on 852.21 eV and 869.0 eV, the two shoulder peaks are situated on 861.14 eV and 879.87 eV, respectively ,. These evidences further prove that the g‐C 3 N 4 and Ni 2 P exist in 8%Ni 2 P‐CdS/g‐C 3 N 4 composite.…”

Section: Resultsmentioning

confidence: 88%

Rationally Designed Functional Ni₂P Nanoparticles as Co–Catalyst Modified CdS@g‐C₃N₄ Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Wang

Jin

2019

ChemistrySelect

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Ni2P nanoparticle contained no precious metal as co‐catalyst to touch up CdS nanorods coupling with graphitic C3N4 for H2 evolution was synthesized successfully by in‐situ fabrication approach. The preparative Ni2P‐CdS/g‐C3N4 composite catalyst exerts remarkable hydrogen production activity and exhibit good photostability in 20 hour cycles. The hydrogen evolution rate is 9.9 times as high as that of pure CdS. Morphological characterization, optical results and electrochemical test proved that special CdS/g‐C3N4 enhanced the transfer of electrons on CdS and g‐C3N4, loading Ni2P co‐catalyst further increased the synergistic effect in photocatalytic properties. Several characterization results such as transmission electron microscopy (TEM), X‐ray diffraction (XRD), The Ultraviolet–visible spectroscopy diffuse reflectance spectroscopy (UV‐vis DRS), Photoluminescence (PL) and nitrogen adsorption‐desorption isotherms (BET) etc. indicate that the Ni2P nanoparticles loaded on the CdS/g‐C3N4 exposed more active sites and facilitated the efficiency of photogenic electron‐hole pairs separation. Optimistically, these results were good consistent with each other. This considerable performance probablely attribute to the special conduction band (CB) and valence band (VB) of CdS and g‐C3N4 which form a heterojuction and the introduction of Ni2P as cocatalyst further extract photogenerated electrons that lower the over potential of H+ redution.

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“…Of all the ferrites, nickel ferrite with the chemical formula NiFe 2 O 4 has made considerable research due to the suitable band gap and good chemical stability [15,18,20]. However, NiFe 2 O 4 exhibits low visible-light-induced photocatalytic activity owing to the fast recombination of photoelectron-hole pairs [23]. Several methods, such as structure-design, metallic and non-metallic elements loading, and fabrication of semiconductor heterojunction have been reported to improve the photocatalytic activity and stability of NiFe 2 O 4 [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

A low-cost preparation of waste-based PANI/NiFe2O4 composite for photocatalytic hydrogen evolution

Chen¹,

Yang²,

Wang³

et al. 2019

DWT

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a b s t r a c tAn economical photocatalyst, waste-based PANI/NiFe 2 O 4 composite was successfully synthesized from aniline wastewater, electroplating wastewater and pickling waste liquor. The obtained photocatalysts were characterized by XRD, TEM, XPS, FTIR spectra and VSM techniques. The material exhibited good magnetic property with high saturation magnetization (41.09 emu g -1 ). After 3 h visible light irradiation, the hydrogen evolution capacity of waste-based PANI, NiFe 2 O 4 and PANI/ NiFe 2 O 4 composite were 1.28, 5.10 and 8.94 mmol g -1 respectively. Among these materials, waste-based PANI/NiFe 2 O 4 exhibited the optimum photocatalytic activity. Besides, waste-based PANI/NiFe 2 O 4 also displayed higher photocatalytic hydrogen production than pure PANI/NiFe 2 O 4 that has been studied before. Waste-based NiFe 2 O 4 was responsible for the enhanced photocatalytic activity. The reaction mechanism of waste-based NiFe 2 O 4 was researched in two parts: the effect of Cr 3+ and organic impurities for structure formation of waste-based NiFe 2 O 4 during in-situ polymerization process. The synthesized waste-based NiFe 2 O 4 exhibited larger specific surface area and smaller grain structure than pure NiFe 2 O 4 , which facilitated the photocatalytic activity. Preparation of photocatalyst from wastewater could not only reduce environmental pollution but also produce new material for other application. The proposed preparation method of waste-based photocatalyst composite had great potential in the field of wastewater treatment and photocatalysis.

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Plasmonic photocatalyst Au/g-C₃N₄/NiFe₂O₄ nanocomposites for enhanced visible-light-driven photocatalytic hydrogen evolution

Abstract: A Au/g-C3N4/NiFe2O4 nanocomposite was successfully prepared and characterized, and it exhibited a significant visible-light-driven photoactivity for hydrogen production.

Cited by 149 publications

References 70 publications

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

Rationally Designed Functional Ni₂P Nanoparticles as Co–Catalyst Modified CdS@g‐C₃N₄ Heterojunction for Efficient Photocatalytic Hydrogen Evolution

A low-cost preparation of waste-based PANI/NiFe2O4 composite for photocatalytic hydrogen evolution

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Plasmonic photocatalyst Au/g-C3N4/NiFe2O4 nanocomposites for enhanced visible-light-driven photocatalytic hydrogen evolution

Abstract: A Au/g-C3N4/NiFe2O4 nanocomposite was successfully prepared and characterized, and it exhibited a significant visible-light-driven photoactivity for hydrogen production.

Cited by 149 publications

References 70 publications

0D CoP cocatalyst/ 2D g‐C3N4 nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

0D CoP cocatalyst/ 2D g‐C3N4 nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

Rationally Designed Functional Ni2P Nanoparticles as Co–Catalyst Modified CdS@g‐C3N4 Heterojunction for Efficient Photocatalytic Hydrogen Evolution

A low-cost preparation of waste-based PANI/NiFe2O4 composite for photocatalytic hydrogen evolution

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Plasmonic photocatalyst Au/g-C₃N₄/NiFe₂O₄ nanocomposites for enhanced visible-light-driven photocatalytic hydrogen evolution

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

0D CoP cocatalyst/ 2D g‐C₃N₄ nanosheets: An efficient photocatalyst for promoting photocatalytic hydrogen evolution

Rationally Designed Functional Ni₂P Nanoparticles as Co–Catalyst Modified CdS@g‐C₃N₄ Heterojunction for Efficient Photocatalytic Hydrogen Evolution