Compositing Two-Dimensional Materials with TiO2 for Photocatalysis

Ren, Yu; Dong, Yuze; Feng, Yaqing; Xu, Jialiang

doi:10.3390/catal8120590

Cited by 35 publications

(15 citation statements)

References 137 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combination of titania with carbon containing semiconductors such as carbon nitride [ 91 , 92 , 93 , 94 , 95 ] and graphene [ 96 , 97 , 98 , 99 ] or graphyne-type materials [ 100 , 101 , 102 ] can also be highlighted in the context of the UV-visible combination. Many oxides, for example, CeO 2 were also tested in combination with carbon layers [ 103 ] or carbon nitride [ 104 ].…”

Section: Composite Photocatalystsmentioning

confidence: 99%

“… ( A ) Time-dependent H 2 generation from NH 3 BH 3 aqueous solution over different samples upon IR-light irradiation (λ > 750 nm) (the inset shows the corresponding catalytic reaction temperatures); ( B ) schematic of the catalytic mechanism for H 2 generation from NH 3 BH 3 molecules over the plasmonic W 18 O 49 NWs (the inset shows a TEM image of the W 18 O 49 NWs); ( C ) catalytic H 2 generation from NH 3 BH 3 aqueous solution at different temperatures for 1 h over different samples without light irradiation; ( D ) time-dependent H 2 generation from NH 3 BH 3 aqueous solution at 15 °C over different samples upon IR-light irradiation: (a) TiO 2 NFs; (b) W 18 O 49 NWs; (c) W 18 O 49 /TiO 2 branched heterostructure; (d) without a catalyst. Reprinted with permission from [ 102 ]: Zhang, Z.; et al Adv. Mater.…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

View full text Add to dashboard Cite

Photo-catalysis is a research field with broad applications in terms of potential technological applications related to energy production and managing, environmental protection, and chemical synthesis fields. A global goal, common to all of these fields, is to generate photo-catalytic materials able to use a renewable energy source such as the sun. As most active photocatalysts such as titanium oxides are essentially UV absorbers, they need to be upgraded in order to achieve the fruitful use of the whole solar spectrum, from UV to infrared wavelengths. A lot of different strategies have been pursued to reach this goal. Here, we selected representative examples of the most successful ones. We mainly highlighted doping and composite systems as those with higher potential in this quest. For each of these two approaches, we highlight the different possibilities explored in the literature. For doping of the main photocatalysts, we consider the use of metal and non-metals oriented to modify the band gap energy as well as to create specific localized electronic states. We also described selected cases of using up-conversion doping cations. For composite systems, we described the use of binary and ternary systems. In addition to a main photo-catalyst, these systems contain low band gap, up-conversion or plasmonic semiconductors, plasmonic and non-plasmonic metals and polymers.

show abstract

Section: Composite Photocatalystsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The improved surface adsorption essentially paves the way for the adsorption of surrounding molecules onto the surface of the photocatalyst that eventually enhances the interfacial interaction of the photocatalyst and molecules. Finally, the controllable structural features of carbon materials such as quantum dots (fullerenes) [168][169][170], 2D materials (graphene, g-C 3 N 4 ) [171,172], 1D materials (carbon nanotubes (CNTs), carbon fibers) [173][174][175][176], and 3D materials (carbon spheres, flowers) [177,178] offer unique charge transportations and improve the overall efficiency of the carbon-based photocatalytic materials.…”

Section: Carbon-based Tio 2 Compositesmentioning

confidence: 99%

“…TiO 2 has been modified by the variety of carbon-based materials such as carbon doping, carbon coating, composites with activated carbon, graphene/graphene oxide/reduced-graphene oxide, g-C 3 N 4 , CNTs, carbon fibers, anisotropic carbon structures, etc. [165][166][167][168][169][170][171][172][173][174][175][176][177][178]. The general photocatalytic mechanisms of these carbon-based TiO 2 systems are summarized in Figure 13a-d [168,[179][180][181] Yu et al [168], have reported the mechanism of carbon quantum dots (CQDs)-integrated TiO 2 towards photocatalytic H 2 production.…”

Section: Carbon-based Tio 2 Compositesmentioning

confidence: 99%

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

Sakar

Prakash

2019

Catalysts

View full text Add to dashboard Cite

Photocatalysis is a multifunctional phenomenon that can be employed for energy applications such as H2 production, CO2 reduction into fuels, and environmental applications such as pollutant degradations, antibacterial disinfection, etc. In this direction, it is not an exaggerated fact that TiO2 is blooming in the field of photocatalysis, which is largely explored for various photocatalytic applications. The deeper understanding of TiO2 photocatalysis has led to the design of new photocatalytic materials with multiple functionalities. Accordingly, this paper exclusively reviews the recent developments in the modification of TiO2 photocatalyst towards the understanding of its photocatalytic mechanisms. These modifications generally involve the physical and chemical changes in TiO2 such as anisotropic structuring and integration with other metal oxides, plasmonic materials, carbon-based materials, etc. Such modifications essentially lead to the changes in the energy structure of TiO2 that largely boosts up the photocatalytic process via enhancing the band structure alignments, visible light absorption, carrier separation, and transportation in the system. For instance, the ability to align the band structure in TiO2 makes it suitable for multiple photocatalytic processes such as degradation of various pollutants, H2 production, CO2 conversion, etc. For these reasons, TiO2 can be realized as a prototypical photocatalyst, which paves ways to develop new photocatalytic materials in the field. In this context, this review paper sheds light into the emerging trends in TiO2 in terms of its modifications towards multifunctional photocatalytic applications.

show abstract

“…1 To date, TiO 2 as the photocatalyst has drawn signicant attention and been widely studied because of its desirable properties including high reactivity, chemical stability, nontoxicity, and cheap price. [2][3][4][5][6][7] Nevertheless, the application of TiO 2 -based photocatalysts is hindered due to its inefficient utilization of solar energy, poor charge separation, and low adsorption of organic contaminants on the surface. Besides these intrinsic drawbacks, the complicated process of synthesis is another key factor to impede its practical application.…”

Section: Introductionmentioning

confidence: 99%

Bi₂O₃ and g-C₃N₄ quantum dot modified anatase TiO₂ heterojunction system for degradation of dyes under sunlight irradiation

2020

View full text Add to dashboard Cite

A facile and feasible method was successfully utilized to incorporate Bi 2 O 3 and g-C 3 N 4 quantum dots on TiO 2 surface to synthesize a novel composite g-C 3 N 4 /TiO 2 /Bi 2 O 3 . The photocatalytic activity of the composite g-C 3 N 4 /TiO 2 /Bi 2 O 3 for degradation of dyes under sunlight and UV light irradiation was evaluated. It possessed the higher photocatalytic performance than that of pristine TiO 2 or g-C 3 N 4 under the same conditions. Under sunlight irradiation, the reaction rate constants of the g-C 3 N 4 /TiO 2 /Bi 2 O 3 was about 4.2 times and 3.3 times higher than that of TiO 2 and g-C 3 N 4 , respectively. The promising photocatalytic performance was attributed to the broader light absorption range and efficient separation of photoinduced carriers. Moreover, based on the TEM, XPS, XRD, UV-vis spectrum, radicals scavenging test and Mott-Schottky analysis systematic mechanism for photodegradation process was proposed.This work provides a promising strategy for the modification of TiO 2 -based semiconductors by incorporating different quantum dots and promoting the efficiency of the photocatalysts in practical application.

show abstract

Compositing Two-Dimensional Materials with TiO2 for Photocatalysis

Cited by 35 publications

References 137 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

Bi₂O₃ and g-C₃N₄ quantum dot modified anatase TiO₂ heterojunction system for degradation of dyes under sunlight irradiation

Contact Info

Product

Resources

About

Compositing Two-Dimensional Materials with TiO2 for Photocatalysis

Cited by 35 publications

References 137 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Insights into the TiO2-Based Photocatalytic Systems and Their Mechanisms

Bi2O3 and g-C3N4 quantum dot modified anatase TiO2 heterojunction system for degradation of dyes under sunlight irradiation

Contact Info

Product

Resources

About

Bi₂O₃ and g-C₃N₄ quantum dot modified anatase TiO₂ heterojunction system for degradation of dyes under sunlight irradiation