1. Introduction 2. Synthesis of Novel Nanostructured Carbon Materials 2.1. Carbon Nanotubes 2.2. Graphene 2.3. Ordered Mesoporous Carbon 2.4. Carbon Hierarchy 2.5. Macroscopic Shaping of Nanocarbon 3. Functionalization of Nanocarbon Materials 3.1. Liquid-Phase Functionalization of Nanocarbon 3.2. Gas-Phase Functionalization of Nanocarbon 4. Characterization and Modeling 4.1. Characterization of Carbon 4.1.1. Microcalorimetry 4.1.2. Temperature-Programmed and Ambient Pressure Photoelectron Spectroscopy 4.1.3. Advanced Electron Microscopy 4.2. Theoretical Modeling 5. Nanocarbons in Catalytic Reactions 5.1. Enhanced Characteristics as a Support for Catalytic Functionalities 5.2. Stabilization of Small Catalytic Particles with Enhanced Catalytic Behavior 5.3. Direct Catalytic Role of Nanocarbon Functional Groups 5.4. Nanoconfinement 5.5. Electron-Transfer Induced Changes in the Properties of Supported Nanoparticles 5.6. Defect-Related Catalytic Reactivity 5.7. Catalysis by Two-Dimensional Carbon Nanomaterials 6. Concluding Remarks and Perspective

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There is increasing interest in plasma technology for CO 2 conversion because it can operate at mild conditions and it can store fluctuating renewable electricity into value-added compounds and renewable fuels. This perspective paper aims to provide a view on the future for non-specialists who want to understand the role of plasma technology in the new scenario for sustainable and low-carbon energy and chemistry. Thus, it is prepared to give a personal view on future opportunities and challenges. First, we introduce the current state-of-the-art and the potential of plasma-based CO 2 conversion. Subsequently, we discuss the challenges to overcome the current limitations and to apply plasma technology on a large scale. The final section discusses the general context and the potential benefits of plasma-based CO 2 conversion for our life and the impact on climate change. It also includes a brief analysis on the future scenario for energy and chemical production, and how plasma technology may realize new paths for CO 2 utilization.

This review discusses the use of iron-or copper-based solid catalysts in the wet oxidation using H 2 O 2 as oxidant of organic molecules present in agro-food and industrial waste aqueous streams. After an introduction on the advantages and limits of using wet hydrogen peroxide catalytic oxidation (WHPCO) as opposite to wet air catalytic oxidation (WACO), the contribution shortly analyses recent results in the field in order to evidence new trends and open issues. More specific examples discussed regard the performances of Fe/zeolite and Fe-containing pillared clays in the oxidation of selected molecules (p-coumaric acid, propionic acid) of relevance for the treatment of organic waste from agro-food production (with reference especially to olive oil milling wastewater). The application of WHPCO in the treatment of complex effluents from electronic industry is also shortly discussed.

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