scholarly journals Semiconductor nanocrystal photocatalysis for the production of solar fuels

2021 ◽  
Vol 154 (3) ◽  
pp. 030901
Author(s):  
Rebeckah Burke ◽  
Kara L. Bren ◽  
Todd D. Krauss
Keyword(s):  
Solar Fuels ◽  
Semiconductor Nanocrystal

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

The Potential of Photoelectrochemical Carbon Sinks

2018 ◽  
Author(s):  
Matthias May ◽  
Kira Rehfeld
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Greenhouse Gas ◽  
Large Scale ◽  
High Efficiency ◽  
Carbon Sink ◽  
Solar Fuels ◽  
Negative Emissions ◽  
Viable Approach ◽  
Low Sensitivity

Greenhouse gas emissions must be cut to limit global warming to 1.5-2C above preindustrial levels. Yet the rate of decarbonisation is currently too low to achieve this. Policy-relevant scenarios therefore rely on the permanent removal of CO<sub>2</sub> from the atmosphere. However, none of the envisaged technologies has demonstrated scalability to the decarbonization targets for the year 2050. In this analysis, we show that artificial photosynthesis for CO<sub>2</sub> reduction may deliver an efficient large-scale carbon sink. This technology is mainly developed towards solar fuels and its potential for negative emissions has been largely overlooked. With high efficiency and low sensitivity to high temperature and illumination conditions, it could, if developed towards a mature technology, present a viable approach to fill the gap in the negative emissions budget.<br>

The Potential of Photoelectrochemical Carbon Sinks

2018 ◽  
Author(s):  
Matthias May ◽  
Kira Rehfeld
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Greenhouse Gas ◽  
Large Scale ◽  
High Efficiency ◽  
Carbon Sink ◽  
Solar Fuels ◽  
Negative Emissions ◽  
Viable Approach ◽  
Low Sensitivity

Greenhouse gas emissions must be cut to limit global warming to 1.5-2C above preindustrial levels. Yet the rate of decarbonisation is currently too low to achieve this. Policy-relevant scenarios therefore rely on the permanent removal of CO<sub>2</sub> from the atmosphere. However, none of the envisaged technologies has demonstrated scalability to the decarbonization targets for the year 2050. In this analysis, we show that artificial photosynthesis for CO<sub>2</sub> reduction may deliver an efficient large-scale carbon sink. This technology is mainly developed towards solar fuels and its potential for negative emissions has been largely overlooked. With high efficiency and low sensitivity to high temperature and illumination conditions, it could, if developed towards a mature technology, present a viable approach to fill the gap in the negative emissions budget.<br>

Chemical Availability of Bromide Dictates CsPbBr3 Nanocrystal Growth

2019 ◽  
Author(s):  
Je-Ruei Wen ◽  
Benjamin Roman ◽  
Freddy Rodriguez Ortiz ◽  
Noel Mireles Villegas ◽  
Nicholas Porcellino ◽  
...  
Keyword(s):  
Reaction Time ◽  
Growth Mechanism ◽  
Chemical Control ◽  
Critical Role ◽  
Phase Evolution ◽  
Detailed Understanding ◽  
Semiconductor Nanocrystal ◽  
Nanocrystal Growth ◽  
Chemical Availability

Lack of detailed understanding of the growth mechanism of CsPbBr3 nanocrystals has hindered sophisticated morphological and chemical control of this important emerging optoelectronic material. Here, we have elucidated the growth mechanism by slowing the reaction kinetics. When 1-bromohexane is used as an alternative halide source, bromide is slowly released into the reaction mixture, extending the reaction time from ~3 seconds to greater than 20 minutes. This enables us to monitor the phase evolution of products over the course of reaction, revealing that CsBr is the initial species formed, followed by Cs4PbBr6, and finally CsPbBr3. Further, formation of monodisperse CsBr nanocrystals is demonstrated in a bromide-deficient and lead-abundant solution. The CsBr can only be transformed into CsPbBr3 nanocubes if additional bromide is added. Our results indicate a fundamentally different growth mechanism for CsPbBr3 in comparison with more established semiconductor nanocrystal systems and reveal the critical role of the chemical availability of bromide for the growth reactions.<br>

Artificial Leaves for Solar Fuels

2021 ◽  
Author(s):  
Gong Zhang ◽  
Bin Liu ◽  
Tuo Wang ◽  
Jinglong Gong
Keyword(s):  
Solar Fuels

scholarly journals Powering the next industrial revolution: transitioning from nonrenewable energy to solar fuels via CO2 reduction

RSC Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 87-113
Author(s):  
Rami J. Batrice ◽  
John C. Gordon
Keyword(s):  
Solar Energy ◽  
Fossil Fuels ◽  
Industrial Revolution ◽  
Co2 Reduction ◽  
Solar Fuels ◽  
Chemical Bonds ◽  
Direct Production ◽  
Promising Alternative ◽  
Nonrenewable Energy

Solar energy has been used for decades for the direct production of electricity in various industries and devices. However, harnessing and storing this energy in the form of chemical bonds has emerged as a promising alternative to fossil fuels.

scholarly journals Solar fuels and feedstocks: the quest for renewable black gold

2021 ◽  
Author(s):  
Hannah J. Sayre ◽  
Lei Tian ◽  
Minjung Son ◽  
Stephanie M. Hart ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Solar Fuels ◽  
Chemical Production

Photocatalysis is capable of C–C, C–O, and C–N bond transformations and has the potential to drive light-activated feedstock chemical production.

Rational construction of a CdS/reduced graphene oxide/TiO2 core–shell nanostructure as an all-solid-state Z-scheme system for CO2 photoreduction into solar fuels

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88409-88413 ◽  
Author(s):  
Libang Kuai ◽  
Yong Zhou ◽  
Wengguang Tu ◽  
Ping Li ◽  
Haijin Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
Solar Fuels ◽  
Photocatalytic Reduction ◽  
Core Shell ◽  
Electron Mediator ◽  
Co2 Photoreduction ◽  
Reduced Graphene ◽  
Rational Construction

An all-solid-state Z-scheme was constructed for the photocatalytic reduction of CO2, consisting of CdS and TiO2 as photocatalysts, and reduced graphene oxide as a solid electron mediator.

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