Zheng-Min Wang, Wendong Wang and Geoffrey Ozin have discovered a synthetic pathway to a sandwich-type nanocomposite of reduced graphene oxide and periodic mesoporous silica in which mesochannels of silica vertically align with respect to the graphene layers with tunable mesochannel depth and size. Deep insight into the formation mode of this novel class of materials obtains from a high photon flux small angle X-ray scattering technique and zeta potential-based solution chemistry, Advanced Functional Materials 2017, DOI: 10.1002/adfm.201704066
A summary of this work can be read here.
Austria’s Museum of Applied Arts in Vienna opening in December will showcase a diorama of Prof. Ozin’s vision of a closed carbon cycle.
More can be read on the University of Toronto website (I, II).
Congratulations Annabelle, Wei and Chenxi as well as Ab, Yuchan and Ziqi on your Advanced Sustainable Systems paper entitled Tailoring CO2 Reduction with Doped Silicon Nanocrystals!!
In this work, silicon nanocrystals doped with varying combinations of phosphorous and boron were investigated for the heterogeneous photoreduction of CO2. The observed trends in stability and activity open new pathways towards the development of sustainable CO2 conversion catalysts.
The article can be read on the Advanced Sustainable Systems website.
With the push towards renewable power generation and electrification, energy storage will likely require improvements to facilitate the increased electricity generation. In this op-ed, Prof. Ozin describes the potential for CO2 derived hydrocarbons as one of several energy storage techniques of the future.
An early version of the article can be read on the Advanced Science News website.
Different CO2 utilization technologies are currently of interest as it is unlikely for just one technology to be the solution for climate change, but rather the combination of many sustainable technologies. In this op-ed, Geoff introduces the concept of Li-CO2 batteries as a utilization of CO2. The battery is proposed to reversibly cycle between Li + CO2 and Li2CO3 + C for charging and discharging.
This article can be read on the Advanced Science News website.
In order to minimize the effects of climate change, net greenhouse gas (GHG) emissions must be reduced to zero. In this op-ed, Geoff details how GHG-emitting technologies are being displaced by more environmentally friendly technologies, but also touches on some GHG-emitting technologies that will be more difficult to replace.
The full article can be read on the Advanced Science News website.
In the inaugural issue of Joule, Geoff provided a commentary on Prof. Steinfeld’s work on CO2 reduction. Their current photo-thermal reactor design implementing a CeO2 catalyst is described with insight into the chemistry of how the originally multistep process has been reduced into a single step process.
The full article can be read on the Joule website.