Ferrites boosting photocatalytic hydrogen evolution over graphitic carbon nitride: a case study of (Co, Ni)Fe2O4 modification

Chen, Jie; Zhao, Daming; Diao, Zhidan; Wang, Miao; Shen, Shaohua

doi:10.1007/s11434-016-0995-0

Cited by 110 publications

(35 citation statements)

References 46 publications

(67 reference statements)

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“…The obtained g‐C 3 N 4 /InVO 4 (with a mass ratio of 80:20) nanocomposites achieved effective separation of charge‐hole pairs and stronger reducing power, which possessed the maximum photocatalytic activity of 212 μmol h −1 g −1 for H 2 evolution, corresponding to an AQE of 4.9 % at 420 nm. In addition, vanadate (AgVO 3 , BiVO 4 , InVO 4 and CuV 2 O 6 ) QDs/g‐C 3 N 4 heterojunctions, g‐C 3 N 4 /Ca 2 Nb 2 TaO 10 and g‐C 3 N 4 /(Co, Ni)Fe 2 O 4 heterojunctions also showed enhanced H 2 evolution under visible light irradiation ,…”

Section: Strategies For Modifying Carbon Nitridementioning

confidence: 99%

Strategies for Efficient Solar Water Splitting Using Carbon Nitride

Yang

Wang

et al. 2017

Chemistry An Asian Journal

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Graphitic carbon nitride (g-C 3 N 4 )-based photocatalysts are promising for photocatalytic water splitting to produce clean solar fuels due to their low cost, suitable band structure and excellent photocatalytic performance. This review focuseso nt he state-of-the-artp rogress of the strategies form odifying g-C 3 N 4 -based photocatalystst oward efficient photocatalytic water splitting. In particular, we highlight the importance of interfacial engineering and nanostructuralcontrol to facilitating charge separation and migration. Other strategies including doping and defecte ngineering are also concisely discussed. Finally,t he perspectives on the challenges and future development of g-C 3 N 4 -based photocatalysts are presented.

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Section: Strategies For Modifying Carbon Nitridementioning

confidence: 99%

Strategies for Efficient Solar Water Splitting Using Carbon Nitride

Yang

Wang

et al. 2017

Chemistry An Asian Journal

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“…Therefore, Pt nanoparticles have been widely applied to play an important role of cocatalysts in various photocatalyst systems, given the fact that the strong driving force created by the Pt/semiconductor Schottky junction could induce the directional electron flow for the promoted charge separation and thus the improved photocatalytic activity. For instance, Chen et al adopted the Pt nanoparticles to further improve the photocatalytic activity of a series of designed and synthesized type II and type I heterojunctions of PCN modified with N‐doped CeO x , (Co, Ni)Fe 2 O 4 , and MgFe 2 O 4 ( Figure a,b). In all these cases, no matter what role these metal oxides played, e.g., extending optical absorption range or accelerating charge separation, Pt nanoparticles coloaded onto the surface of PCN acting as cocatalysts can further capture and accumulate electrons transferred from PCN, and thus accelerating the separation and transfer of photogenerated charges in these heterojunction structures.…”

Section: Compositing Metal Nanoparticles With Pcnmentioning

confidence: 99%

Artificial Photosynthesis with Polymeric Carbon Nitride: When Meeting Metal Nanoparticles, Single Atoms, and Molecular Complexes

Kong

Shen

2019

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101

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Artificial photosynthesis for solar water splitting and CO2 reduction to produce hydrogen and hydrocarbon fuels has been considered as one of the most promising ways to solve increasingly serious energy and environmental problems. As a well‐documented metal‐free semiconductor, polymeric carbon nitride (PCN) has been widely used and intensively investigated for photocatalytic water splitting and CO2 reduction, owing to its physicochemical stability, visible‐light response, and facile synthesis. However, PCN as a photocatalyst still suffers from the fast recombination of electron‐hole pairs and poor water redox reaction kinetics, greatly restricting its activity for artificial photosynthesis. Among the various modification approaches developed so far, decorating PCN with metals in different existences of nanoparticles, single atoms and molecular complexes, has been evidently very effective to overcome these limitations to improve photocatalytic performances. In this Review article, a systematic introduction to the state‐of‐the‐art metal/PCN photocatalyst systems is given, with metals in versatility of nanoparticles, single atoms, and molecular complexes. Then, the recent processes of the metal/PCN photocatalyst systems in the applications of artificial photosynthesis, e.g., water splitting and CO2 reduction, are reviewed. Finally, the remaining challenges and opportunities for the development of high efficiency metal/PCN photocatalyst systems are presented and prospected.

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“…It is well-known that spinel ferrites have attracted increasing attention in the field of photocatalytic hydrogen production via water splitting [15][16][17][18][19][20][21][22]. 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].…”

Section: Introductionmentioning

confidence: 99%

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

Chen¹,

Yang²,

Wang³

et al. 2019

Desalination and Water Treatment

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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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Ferrites boosting photocatalytic hydrogen evolution over graphitic carbon nitride: a case study of (Co, Ni)Fe2O4 modification

Cited by 110 publications

References 46 publications

Strategies for Efficient Solar Water Splitting Using Carbon Nitride

Strategies for Efficient Solar Water Splitting Using Carbon Nitride

Artificial Photosynthesis with Polymeric Carbon Nitride: When Meeting Metal Nanoparticles, Single Atoms, and Molecular Complexes

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

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