Earth-abundant ZnS/ZnO/CuFeS2 films for air purification and solar fuels production

2021 ◽  
Vol 134 ◽  
pp. 106029
Author(s):  
E. Luévano-Hipólito ◽  
Leticia M. Torres-Martínez
Keyword(s):  
Solar Fuels ◽  
Air Purification ◽  
Earth Abundant

scholarly journals Enabling Solar Fuels Technology With High Throughput Experimentation

2014 ◽  
Vol 1654 ◽  
Author(s):  
J. M. Gregoire ◽  
J. A. Haber ◽  
S. Mitrovic ◽  
C. Xiang ◽  
S. Suram ◽  
...  
Keyword(s):  
High Throughput ◽  
Materials Science ◽  
Technology Development ◽  
Research Effort ◽  
Solar Fuels ◽  
Transportation Fuels ◽  
High Throughput Experimentation ◽  
Earth Abundant ◽  
Combinatorial Materials ◽  
Joint Center

ABSTRACTThe High Throughput Experimentation (HTE) project of the Joint Center for Artificial Photosynthesis (JCAP, http://solarfuelshub.org/) performs accelerated discovery of new earth-abundant photoabsorbers and electrocatalysts. Through collaboration within the DOE solar fuels hub and with the broader research community, the new materials will be utilized in devices that efficiently convert solar energy, water and carbon dioxide into transportation fuels. JCAP-HTE builds high-throughput pipelines for the synthesis, screening and characterization of photoelectrochemical materials. In addition to a summary of these pipelines, we will describe several new screening instruments for high throughput (photo-)electrochemical measurements. These instruments are not only optimized for screening against solar fuels requirements, but also provide new tools for the broader combinatorial materials science community. We will also describe the high throughput discovery, follow-on verification, and device implementation of a new quaternary metal oxide catalyst. This rapid technology development from discovery to device implementation is a hallmark of the multi-faceted JCAP research effort.

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...

scholarly journals New Earth-abundant Materials for Large-scale Solar Fuels Generation

2018 ◽  
Vol 72 (5) ◽  
pp. 333-337 ◽  
Author(s):  
Rajiv Ramanujam Prabhakar ◽  
Wei Cui ◽  
S. David Tilley
Keyword(s):  
Large Scale ◽  
Solar Fuels ◽  
Earth Abundant

Recent Progress on Nano-heterostructure Photocatalysts for Solar Fuels Generation

2015 ◽  
Vol 30 (11) ◽  
pp. 1121 ◽  
Author(s):  
HAN Cheng ◽  
LEI Yong-Peng ◽  
WANG Ying-De
Keyword(s):  
Recent Progress ◽  
Solar Fuels

Room Temperature Alkali Metal Reduction of Carbon Dioxide

2020 ◽  
Author(s):  
Lucas A. Freeman ◽  
Akachukwu D. Obi ◽  
Haleigh R. Machost ◽  
Andrew Molino ◽  
Asa W. Nichols ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Alkali Metals ◽  
Room Temperature ◽  
Chemical Reduction ◽  
Bond Cleavage ◽  
Open Shell ◽  
Metal Reduction ◽  
One Pot ◽  
Earth Abundant ◽  
Electron Reduction

The reduction of the relatively inert carbon–oxygen bonds of CO<sub>2</sub> to access useful CO<sub>2</sub>-derived organic products is one of the most important fundamental challenges in synthetic chemistry. Facilitating this bond-cleavage using earth-abundant, non-toxic main group elements (MGEs) is especially arduous because of the difficulty in achieving strong inner-sphere interactions between CO<sub>2</sub> and the MGE. Herein we report the first successful chemical reduction of CO<sub>2</sub> at room temperature by alkali metals, promoted by a cyclic(alkyl)(amino) carbene (CAAC). One-electron reduction of CAAC-CO<sub>2</sub> adduct (<b>1</b>) with lithium, sodium or potassium metal yields stable monoanionic radicals clusters [M(CAAC–CO<sub>2</sub>)]<sub>n</sub>(M = Li, Na, K, <b> 2</b>-<b>4</b>) and two-electron alkali metal reduction affords open-shell, dianionic clusters of the general formula [M<sub>2</sub>(CAAC–CO<sub>2</sub>)]<sub>n </sub>(<b>5</b>-<b>8</b>). It is notable that these crystalline clusters of reduced CO<sub>2</sub> may also be isolated via the “one-pot” reaction of free CO<sub>2</sub> with free CAAC followed by the addition of alkali metals – a reductive process which does not occur in the absence of carbene. Each of the products <b>2</b>-<b>8</b> were investigated using a combination of experimental and theoretical methods.<br>

Workfunction of Al-Doped ZnO Films Deposited by Atomic Layer Deposition

2018 ◽  
Author(s):  
Peter George Gordon ◽  
Goran Bacic ◽  
Gregory P. Lopinski ◽  
Sean Thomas Barry
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Atomic Ratio ◽  
Aluminum Concentration ◽  
Zno Films ◽  
Transparent Conductor ◽  
Kelvin Probe ◽  
Layer Deposition ◽  
Earth Abundant ◽  
Doped Zno

Al-doped ZnO (AZO) is a promising earth-abundant alternative to Sn-doped In<sub>2</sub>O<sub>3</sub> (ITO) as an n-type transparent conductor for electronic and photovoltaic devices; AZO is also more straightforward to deposit by atomic layer deposition (ALD). The workfunction of this material is particularly important for the design of optoelectronic devices. We have deposited AZO films with resistivities as low as 1.1 x 10<sup>-3</sup> Ωcm by ALD using the industry-standard precursors trimethylaluminum (TMA), diethylzinc (DEZ), and water at 200<sup>◦</sup>C. These films were transparent and their elemental compositions showed reasonable agreement with the pulse program ratios. The workfunction of these films was measured using a scanning Kelvin Probe (sKP) to investigate the role of aluminum concentration. In addition, the workfunction of AZO films prepared by two different ALD recipes were compared: a “surface” recipe wherein the TMA was pulsed at the top of each repeating AZO stack, and a interlamellar recipe where the TMA pulse was introduced halfway through the stack. As aluminum doping increases, the surface recipe produces films with a consistently higher workfunction as compared to the interlamellar recipe. The resistivity of the surface recipe films show a minimum at a 1:16 Al:Zn atomic ratio and using an interlamellar recipe, minimum resistivity was seen at 1:19. The film thicknesses were characterized by ellipsometry, chemical composition by EDX, and resistivity by four-point probe.<br>

Sign in / Sign up

Export Citation Format

Share Document