Organic-Inorganic Hybrid Materials for Environmental Catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 3025

Special Issue Editors

Istituto Italiano di Tecnologia - IIT, Centre for Sustainable Future Technologies (CSFT), Via Livorno 60, 10144-Torino, Italy
Interests: Environmental catalysis; green synthesis; nanomaterials; porous materials; biomass valorization; metal oxides-based materials; hybrid materials; catalytic degradation of environmental pollutants; photocatalysis; air purification; water and air treatment; CO2 capture and valorization
Center for Sustainable Future Technologies @Polito, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Torino, Italy
Interests: CO2 valorization; electrochemistry; renewable energy; electrocatalysis; interface analysis; nanomaterials; transport properties
Special Issues, Collections and Topics in MDPI journals
Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, Italy
Interests: Electrochemistry; catalysis; catalyst; fuel cell; Li-O2 batteries; CO2 conversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Environmental pollution, like water and air pollution, is a wide-spreading issue impacting all living beings. Different technologies are being suggested to mitigate the impact of the anthropogenic activities, like electrocatalysis, photocatalysis and enzymatic catalysis. These technologies can be used to remove efficiently the contaminants from water and air sources as a result of the ongoing progress in nanotechnology in the development of organic-inorganic nano-structured hybrid catalysts. In the last years a huge advancement has been observed in the design of hybrid materials with different surface morphologies (like shape, size, and porosity) and enhanced metal-metal, metal-organic, and metal-support interactions for catalytic applications. The fine-tuning of the physicochemical properties impacts the overall performance (activity, selectivity, and stability) of the catalyst and intrinsically in its’ cost-efficiency, enhancing the possibility to apply these three technologies in the large-scale processes.

This Special Issue welcomes papers presenting the development of advanced synthesis approaches, new enzymatic, electro- and photo- catalysts, preferentially eco-friendly and cost-efficient, and fundamental understanding of structure-activity relationships and catalyst-pollutant interactions for the catalytic removal of environmental pollutants.

Dr. Mirtha Lourenço
Dr. Adriano Sacco
Dr. Juqin Zeng
Guest Editors

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Keywords

  • Design and development of hybrid organic-inorganic catalysts and processes
  • Organic molecules-modified inorganic materials
  • Inorganic-modified organic materials
  • Physical and chemical characterization
  • Green synthesis processes
  • Water and air treatment
  • CO2 conversion
  • Enzymatic, photo- and electro- catalysis

Published Papers (1 paper)

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Research

13 pages, 4381 KiB  
Article
Efficient CO2 Electroreduction on Tin Modified Cuprous Oxide Synthesized via a One-Pot Microwave-Assisted Route
by Juqin Zeng, Marco Fontana, Micaela Castellino, Adriano Sacco, M. Amin Farkhondehfal, Filippo Drago and Candido Fabrizio Pirri
Catalysts 2021, 11(8), 907; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11080907 - 27 Jul 2021
Cited by 2 | Viewed by 1823
Abstract
Bimetallic copper-tin catalysts are considered cost-effective and suitable for large-scale electrochemical conversion of CO2 to valuable products. In this work, a class of tin (Sn) modified cuprous oxide (Cu2O) is simply synthesized through a one-pot microwave-assisted solvothermal method and thoroughly [...] Read more.
Bimetallic copper-tin catalysts are considered cost-effective and suitable for large-scale electrochemical conversion of CO2 to valuable products. In this work, a class of tin (Sn) modified cuprous oxide (Cu2O) is simply synthesized through a one-pot microwave-assisted solvothermal method and thoroughly characterized by various techniques. Sn is uniformly distributed on the Cu2O crystals showing a cube-within-cube structure, and CuSn alloy phase emerges at high Sn contents. The atomic ratio of Cu to Sn is found to be crucially important for the selectivity of the CO2 reduction reaction, and a ratio of 11.6 leads to the optimal selectivity for CO. This electrode shows a high current density of 47.2 mA cm−2 for CO formation at −1.0 V vs. the reversible hydrogen electrode and also displays good CO selectivity of 80–90% in a wide potential range. In particular, considerable CO selectivity of 72–81% is achieved at relatively low overpotentials from 240 mV to 340 mV. During the long-term tests, satisfactory stability is observed for the optimal electrode in terms of both electrode activity and CO selectivity. The relatively low price, the fast and scalable synthesis, and the encouraging performance of the proposed material implies its good potential to be implemented in large-scale CO2 electrolyzers. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Materials for Environmental Catalysis)
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