Cover Feature: Upcycling Plastic Wastes into Value‐Added Products by Heterogeneous Catalysis (ChemSusChem 14/2022)

Understanding the Structure–Activity Relationships in Catalytic Conversion of Polyolefin Plastics by Zeolite-Based Catalysts: A Critical Review

“…It converts polyolefins to a mixture of gas, liquid, and solid-state hydrocarbons. 7,9,59 In comparison, catalytic cracking of polyolefins could be carried out at a relatively lower temperature within a shorter reaction time, forming hydrocarbon products with a relatively narrower molecular distribution. 59 Although the products' compositions obtained from both thermal and catalytic cracking are affected by the nature of polymers, reactors, and reaction conditions, such as heating rate, flow rate, and residence time, 9,12,60,61 the selectivity difference mainly originates from different reaction mechanisms of the above two processes.…”

“…Most plastic waste is disposed of by landfill or incineration for energy recovery accompanied by toxic byproduct formation. 8,9 Besides, mechanical recycling, especially applicable to thermoplastics such as PET bottles and some polyolefin resins, will convert the plastic waste into the former plastic but will generally lead to degradation of thermal, physical, and mechanical properties. 10,11 Based on the current situation mentioned above, more eco-friendly and economical recycling of plastic waste needs to be explored urgently.…”

Plastic Waste Valorization by Leveraging Multidisciplinary Catalytic Technologies

“…As complementary approaches to traditional mechanical recycling, the emergence of industrial and academic adoption of chemical recycling and upcycling approaches is encouraging. ,,,, The development of mechanical recycling and partial chemical recycling such as traditional pyrolysis to syngas/carbon/oil are not included in this paper. Considering the enormous volume and different features of postconsumer plastics, diversified and specific reclamation strategies are most likely to be required to address this grand challenge in the future. , There are some important review topics in this field, which have summarized well the progress of plastic recycling and upcycling. ,,,,− Our aim in this review is to highlight recent innovations and unconventional processes for plastic recycling and upcycling, with particular emphasis on leveraging multidisciplinary catalytic techniques to achieve economic and/or sustainable approaches (Figure ). We mainly focus on the principles, mechanisms, and opportunities of cases that involve leveraging of developed catalytic technologies in other fields (e.g., biomass conversion, electrochemistry, photochemistry).…”

“…Recently, the preparation of chemicals from plastics has drawn increasing attention. A variety of important chemicals can be derived from plastics, as summarized in previous reviews. ,− ,− The recent progress in thermo-driven plastic recycling and upcycling to chemicals is summarized in Table .…”

Multifunctional Molecule Assists Passivate Method to Simultaneously Improve the Efficiency and Stability of Perovskite Solar Cells

“…Moreover, the N atom of SN molecule can also donate extra lone pair electrons to the vacant 6p orbital of Pb 2+ , playing an important role in passivating defects. [29][30][31] Figure 4c is the cross-sectional SEM image of the PSCs. The perovskite layer has good contact with the SnO 2 layer, and the thickness of the perovskite membrane is about 660 nm, which is enough for high efficiency of PSCs.…”