Anchoring Zn0.5Cd0.5S solid solution onto 2D porous Co-CoO nanosheets for highly improved photocatalytic H2 generation

2021 ◽  
Author(s):  
Xueyou Gao ◽  
Deqian Zeng ◽  
Qingru Zeng ◽  
Zongzhuo Xie ◽  
Toyohisha Fujita ◽  
...  
Keyword(s):  
Solid Solution ◽  
Water Splitting ◽  
Noble Metal ◽  
H2 Production ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
H2 Generation ◽  
Photocatalytic H2 Generation

Co-based cocatalysts have attracted considerable attention as potential alternatives for the noble-metal (Pt) in photocatalytic water splitting. However, the two-dimensional (2D) porous-structured Co-based cocatalysts toward photocatalytic hydrogen (H2) production application...

Porous direct Z-scheme heterostructures of S-deficient CoS/CdS hexagonal nanoplates for robust photocatalytic H2 generation

CrystEngComm ◽  
2021 ◽  
Author(s):  
Zhihui Li ◽  
Hanchu Chen ◽  
Yanyan Li ◽  
Hui Wang ◽  
Yanru Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
H2 Production ◽  
Solar Fuels ◽  
Photocatalytic Water Splitting ◽  
H2 Generation ◽  
Earth Abundant ◽  
Semiconductor Heterojunctions ◽  
Photocatalytic H2 Generation ◽  
Hexagonal Nanoplates

Photocatalytic water-splitting with Z-scheme semiconductor heterojunctions is a promising way to achieve renewable solar fuels. Nevertheless, developing earth-abundant direct Z-scheme photocatalytic systems for efficient H2 production is still under-developed. In...

Pentagonal two-dimensional noble-metal dichalcogenides PdSSe for photocatalytic water splitting with pronounced optical absorption and ultrahigh anisotropic carrier mobility

2021 ◽  
Author(s):  
Feng Xiao ◽  
Wen Lei ◽  
Wei Wang ◽  
Lili Xu ◽  
Shengli Zhang ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Water Splitting ◽  
Noble Metal ◽  
Carrier Mobility ◽  
Building Blocks ◽  
Two Dimensional ◽  
Orthorhombic Structure ◽  
Photocatalytic Water Splitting ◽  
Metal Dichalcogenides

Emerging two-dimensional (2D) noble-metal dichalcogenides (NMDCs) PdX2 (X = S and Se) crystallize in an unusual orthorhombic structure (2O phase) with unique pentagons and PdX4 planar squares as building blocks,...

Two-dimensional layered Type-II MS2/BiOCl (M = Zr, Hf) van der Waals heterostructures: A promising photocatalysts for hydrogen generation

2021 ◽  
Author(s):  
Francis Opoku ◽  
Osei Akoto ◽  
Samuel Osei-Bonsu Oppong ◽  
Anthony Apeke Adimado
Keyword(s):  
Energy Storage ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Van Der Waals ◽  
H2 Production ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting ◽  
Van Der Waals Heterostructure

Sustainable hydrogen (H2) production via photocatalytic water splitting is considered the most promising energy storage, where two-dimensional van der Waals heterostructure, composed of two or more 2D monolayer materials, has...

scholarly journals Photocatalytic Hydrogen Evolution via Water Splitting: A Short Review

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 655 ◽  
Author(s):  
Yifan Zhang ◽  
Young-Jung Heo ◽  
Ji-Won Lee ◽  
Jong-Hoon Lee ◽  
Johny BajGai ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Solar Energy ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Future Development ◽  
Rational Design ◽  
Short Review ◽  
H2 Production ◽  
H2 Generation ◽  
Photocatalytic H2 Generation

Photocatalytic H2 generation via water splitting is increasingly gaining attention as a viable alternative for improving the performance of H2 production for solar energy conversion. Many methods were developed to enhance photocatalyst efficiency, primarily by modifying its morphology, crystallization, and electrical properties. Here, we summarize recent achievements in the synthesis and application of various photocatalysts. The rational design of novel photocatalysts was achieved using various strategies, and the applications of novel materials for H2 production are displayed herein. Meanwhile, the challenges and prospects for the future development of H2-producing photocatalysts are also summarized.

Solar H2 Production From a Two-Step Water Splitting Process With Metal (Fe, Ni) Doped Ceria

2008 ◽  
Author(s):  
H. Kaneko ◽  
Y. Naganuma ◽  
S. Taku ◽  
K. Ouchi ◽  
N. Hasegawa ◽  
...  
Keyword(s):  
Solid Solution ◽  
Water Splitting ◽  
Metal Ion ◽  
Oxygen Deficiency ◽  
H2 Production ◽  
Doped Ceria ◽  
Solar Simulator ◽  
H2 Generation ◽  
Metal Doped ◽  
Splitting Process

Solar H2 production by the two-step water splitting process with thermochemical reaction has been proposed to convert solar energy into chemical energy. We succeeded in repeating the cyclic two-step water splitting process composed of the O2-releasing and H2-generation reactions with metal (Fe, Ni) doped ceria. The metal doped ceria with low content of metal ion (Fe3+, Ni2+) formed a solid solution with fluorite-type structure between ceria (CeO2) and metal oxide (Fe2O3, NiO). The empirical formula of the solid solution was Ce1-αMαO2−δ (M = Fe, Ni), and it was assumed that the high reactivity on the two-step water splitting process was due to an oxygen deficiency in the solid solution. The metal doped ceria with different Ce:M mole ratio (Ce:M = 0.97:0.03–0.7:0.3) was prepared through the combustion method. The two-step water-splitting process with metal doped ceria proceeded at 1673K for the O2-releasing reaction and at 1273K for the H2-generation reaction by irradiation of an infrared imaging lamp for a solar simulator. The amounts of H2 gas evolved in the H2-generation reaction with Fe-doped ceria and Ni-doped ceria with different Ce:M (M = Fe, Ni) mole ratio were 0.97–1.8 and 1.7–2.5 cm3/g, respectively, and the evolved H2/O2 ratios were approximately equaled to 2 of the stoichiometric value. The amounts of H2 and O2 gases evolved in the two-step water splitting process varied with the Ce:M mole ratio in the metal doped ceria. It was suggested that the O2-releasing and H2-generation reactions with metal doped ceria was repeated with the reduction and oxidation of Ce4+-Ce3+ enhanced by the presence of Fe or Ni ions. Furthermore, the O2-releasing reaction with Ni-doped ceria proceeded under a high O2 partial pressure atmosphere (pO2 = 0.05 atm) and at the temperature of 1773K. The progress of the O2-releasing reaction under a high pO2 indicates that metal doped ceria can be applicable for the rotary-type solar reactor developed by Tokyo Tech group for solar H2 production.

Auxetic, flexible, and strain-tunable two-dimensional th-AlN for photocatalytic visible light water splitting with anisotropic high carrier mobility

2021 ◽  
Vol 9 (14) ◽  
pp. 4971-4977
Author(s):  
Mehmet Emin Kilic ◽  
Kwang-Ryeol Lee
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Water Splitting ◽  
Carrier Mobility ◽  
Two Dimensional ◽  
Light Water ◽  
Photocatalytic Water Splitting ◽  
Electronic And Optical Properties ◽  
High Carrier Mobility ◽  
High Carrier

Tetrahexagonal AlN: a novel two-dimensional family for photocatalytic water splitting with exceptional mechanical, electronic, and optical properties.

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