Editor’s Choice Articles

Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

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18 pages, 2681 KB  
Review
Tuning CNT Properties for Metal-Free Environmental Catalytic Applications
by Raquel P. Rocha, Olívia S.G.P. Soares, José L. Figueiredo and Manuel Fernando R. Pereira
C 2016, 2(3), 17; https://doi.org/10.3390/c2030017 - 29 Jun 2016
Cited by 35 | Viewed by 9493
Abstract
The application of carbon nanotubes (CNTs) as metal-free catalysts is a novel approach for heterogeneous liquid phase catalytic systems. Textural and chemical modifications by liquid/gas phase or mechanical treatments, as well as solid state reactions, were successfully applied to obtain carbon nanotubes with [...] Read more.
The application of carbon nanotubes (CNTs) as metal-free catalysts is a novel approach for heterogeneous liquid phase catalytic systems. Textural and chemical modifications by liquid/gas phase or mechanical treatments, as well as solid state reactions, were successfully applied to obtain carbon nanotubes with different surface functionalities. Oxygen, nitrogen, and sulfur are the most common heteroatoms introduced on the carbon surface. This short-review highlights different routes used to develop metal-free carbon nanotube catalysts with enhanced properties for Advanced Oxidation Processes. Full article
(This article belongs to the Special Issue Surface Modification of Carbon Nanotubes)
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10 pages, 1611 KB  
Article
Calculating the Emissions Impacts of Waste Electronics Recycling in Ontario, Canada
by Calvin Lakhan
C 2016, 2(2), 11; https://doi.org/10.3390/c2020011 - 11 Apr 2016
Cited by 4 | Viewed by 9064
Abstract
This study highlights the economic and environmental challenges of recycling in Ontario, specifically examining the effect of attempting to increase the emissions target for the province’s Waste Electronics (WEEE) program. The findings from the cost model analysis found that Ontario’s Electronic Stewardship program [...] Read more.
This study highlights the economic and environmental challenges of recycling in Ontario, specifically examining the effect of attempting to increase the emissions target for the province’s Waste Electronics (WEEE) program. The findings from the cost model analysis found that Ontario’s Electronic Stewardship program reduces overall carbon emissions by approximately 205 thousand tonnes every year. This study also found that targeting specific materials for recovery could result in a scenario where the province could improve emissions offsets while reducing material management costs. Under our modeled scenario, as the tonnes of greenhouse gases (GHGs) avoided increases, the system cost per tonne of GHG avoided initially declines. However, after avoiding 215 thousand tonnes of GHGs (the optimal point), the system cost/tonne GHG avoided increases. To achieve an emissions target in excess of 215 thousand tonnes, the province will have to have to start recycling higher cost difficult to recycle materials (display monitors, computer peripherals, etc.). Full article
(This article belongs to the Special Issue Materials and Processes for Carbon Dioxide Capture and Utilisation)
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