CuTe 2 Cl Monolayer: An Unexplored 2D Hybrid Structure with the Coexistence of Remarkable Charge Separation and Visible Light Absorption

2019 ◽  
Vol 14 (3) ◽  
pp. 1900554
Author(s):  
Yungang Zhou ◽  
Junjie He
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Hybrid Structure ◽  
Visible Light Absorption

scholarly journals Studies on the substrate-dependent photocatalytic properties of Cu2O heterojunctions

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 4935-4941
Author(s):  
Riza Ariyani Nur Khasanah ◽  
Hui-Ching Lin ◽  
Hsiang-Yun Ho ◽  
Yen-Ping Peng ◽  
Tsong-Shin Lim ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Spectral Response ◽  
Photocatalytic Properties ◽  
Visible Light Absorption ◽  
Uv Visible

Cu2O/TNA/Ti photoanode showed spectral response outperformed Cu2O/Ti and Cu2O/FTO photocathodes. Cu2O/TNA/Ti showed better spectral response than that of TNA/Ti, ascribed to UV-visible light absorption of Cu2O, not to charge separation enhancement.

scholarly journals Synergistic effect of Ni–Ag–rutile TiO2 ternary nanocomposite for efficient visible-light-driven photocatalytic activity

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36930-36940 ◽  
Author(s):  
Petri M. Leukkunen ◽  
Ekta Rani ◽  
Assa Aravindh Sasikala Devi ◽  
Harishchandra Singh ◽  
Graham King ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Effective Charge ◽  
Energy Dispersive ◽  
Intimate Contact ◽  
Visible Light Absorption ◽  
Visible Light Driven

Robust photocatalytic activity of Ni–Ag–RTiO2 is attributed to the improved visible light absorption and effective charge separation due to intimate contact between Ni and RTiO2via Ag, as evidenced by Ti3+ in Ti 2p XPS and energy dispersive mapping.

Design of multicomponent photocatalysts for hydrogen production under visible light using water-soluble titanate nanodisks

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4819-4829 ◽  
Author(s):  
Cao-Thang Dinh ◽  
Minh-Hao Pham ◽  
Yongbeom Seo ◽  
Freddy Kleitz ◽  
Trong-On Do
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Catalytic Reaction ◽  
Light Absorption ◽  
Charge Separation ◽  
Water Soluble ◽  
Visible Light Absorption ◽  
Highly Efficient ◽  
Main Factors

Water-soluble multicomponent photocatalysts highly efficient for H2 generation under visible light are designed in such a way to simultaneously enhance the three main factors of photocatalysis, i.e. visible light absorption, charge separation, and surface catalytic reaction.

scholarly journals Simultaneous layer exfoliation and defect activation in g-C3N4 nanosheets with air-water interfacial plasma: Spectroscopic defects probing with tailored optical properties

2021 ◽  
Author(s):  
Trishamoni Kashyap ◽  
Palash Jyoti Boruah ◽  
Heremba Bailung ◽  
Dirtha Sanyal ◽  
Biswajit Choudhury
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Charge Transport ◽  
Transport Properties ◽  
Light Absorption ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Visible Light Absorption ◽  
Carbon Nitride Nanosheets

Defect-activated ultrathin graphitic carbon nitride nanosheets (g-C3N4) show an enhanced visible light absorption, better charge-separation, and facile charge transport properties. These are requisite for the designing of an active photocatalyst....

Impact of surface hydroxylation in MgO-/SnO-nanocluster modified TiO2 anatase (101) composites on visible light absorption, charge separation and reducibility.

2017 ◽  
Author(s):  
Michael Nolan ◽  
Stephen Rhatigan
Keyword(s):  
Metal Oxide ◽  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Density Functional ◽  
Visible Range ◽  
Hydroxyl Groups ◽  
Visible Light Absorption ◽  
Tio2 Anatase ◽  
The Impact

Surface modification with metal oxide nanoclusters has emerged as a candidate for the enhancement of the photocatalytic activity of titanium dioxide. An increase in visible light absorption and the suppression of charge carrier recombination are necessary to improve the efficiency. We have studied Mg<sub>4</sub>O<sub>4</sub> and Sn<sub>4</sub>O<sub>4</sub> nanoclusters modifying the (101) surface of anatase TiO<sub>2</sub> using density functional theory corrected for on-site Coulomb interactions (DFT + U). Such studies typically focus on the pristine surface, free of the point defects and surface hydroxyls present in real surfaces. We have also examined the impact of partial hydroxylation of the anatase surface on a variety of outcomes such as nanocluster adsorption, light absorption, charge separation and reducibility. Our results indicate that the modifiers adsorb strongly at the surface, irrespective of the presence of hydroxyl groups, and that modification extends light absorption into the visible range while enhancing UV activity. Our model for the excited state of the heterostructures demonstrates that photoexcited electrons and holes are separated onto the TiO<sub>2</sub> surface and metal oxide nanocluster respectively. Comparisons with bare TiO<sub>2</sub> and other TiO<sub>2</sub>-based photocatalyst materials are presented throughout.<br>

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