Catalytic Purification of Pollutants and Catalytic Conversion of Solid Wastes, 2nd Edition

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

Deadline for manuscript submissions: closed (31 December 2024) | Viewed by 1868

Special Issue Editors

Tianjin Recyclable Resources Institute, All China Federation of Supply and Marketing Cooperatives, Tianjin, China
Interests: comprehensive utilization of multiple solid wastes; simultaneous removal of pollutants; clean metallurgy technol-ogy; environmental catalysis; catalytic pyrolysis
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Guest Editor
School of Chemical Engineering & Technology, Hebei University of Technology, Tianjin 300130, China
Interests: solid waste; NOx reduction; petroleum engineering; catalyst characterization; SCR
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Special Issue Information

Dear Colleagues,

Thank you for your interest in publishing your work in Catalysts. This Special Issue invites contributions of original high-quality interdisciplinary research papers devoted to currently important topics in catalysis and related subjects. Studies significantly advancing our fundamental understanding of and focusing on the Catalytic Purification of Pollutants and Catalytic Conversion of Solid Wastes will be given primary consideration. Field studies have preference, while papers describing laboratory experiments must demonstrate significant advances in methodology or mechanistic understanding with a clear connection to the catalytic pathway and catalysis chemistry. Descriptive, repetitive, incremental, or regional-scale studies with limited novelty will not be considered.

Dr. Peng Yuan
Prof. Dr. Boxiong Shen
Guest Editors

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Keywords

  • DeNOx by SCR/AOPs
  • photocatalytic oxidation/degradation of gaseous pollutants (Hg0, VOCs, etc.)
  • catalytic pyrolysis of solid wastes (biomass, plastics, textiles, etc.)
  • novel and commercially applicable environmental catalysts (deactivation, modification, regeneration, etc.)
  • new catalytic processes for the production of clean energy (syngas, oil, etc.)
  • new catalytic combustion technologies and catalysts
  • efficient capture and catalytic conversion of CO2
  • critical reviews on current or emerging topics in environmental catalysis

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Published Papers (1 paper)

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Research

14 pages, 2649 KiB  
Article
Enhanced Photocatalytic Activity in Photocatalytic Concrete: Synthesis, Characterization, and Comprehensive Performance Assessment of Nano-TiO2-Modified Recycled Aggregates
by Xiucheng Zhang, Weizhi Chen, Wencong Lin, Jiansheng Zheng, Guohui Yan and Xuefei Chen
Catalysts 2024, 14(10), 711; https://doi.org/10.3390/catal14100711 - 11 Oct 2024
Cited by 1 | Viewed by 1545
Abstract
This study presents an exhaustive exploration into the development and rigorous evaluation of nano-TiO2-modified recycled aggregates (NT@RAs) as an environmentally sustainable substitute for natural aggregates in concrete applications. A methodical framework was devised for the synthesis and thorough characterization of NT@RAs, [...] Read more.
This study presents an exhaustive exploration into the development and rigorous evaluation of nano-TiO2-modified recycled aggregates (NT@RAs) as an environmentally sustainable substitute for natural aggregates in concrete applications. A methodical framework was devised for the synthesis and thorough characterization of NT@RAs, emphasizing the optimization of nano-TiO2 loading onto the RA surface and within its intricate porous structure. The investigation encompassed three distinct types of recycled aggregates: recycled glass sands (RGSs), recycled clay brick sands (RCBSs), and recycled concrete sands (RCSs). Of particular interest, NT@RGS, with its properties of an inherently smooth surface texture and low water absorption, was found to exert a favorable influence on the rheological behavior of concrete, manifested in reduced yield stress, thereby underscoring the potential for fine-tuning mix designs to enhance workability. As the substitution levels of NT@RGS and NT@RCBS escalated, an initial decrement in compressive strength was discernible, which subsequently reversed to strength restoration at optimized substitution ratios. This phenomenon is attributed to the synergistic interplay among NT@RA components. Remarkably, NT@RA-incorporated concrete demonstrated unparalleled self-cleaning abilities, surpassing the performance of concrete with direct nano-TiO2 powder incorporation. This comprehensive research contributes significantly to the advancement in sustainable, high-performance photocatalytic construction materials within the realm of concrete technology. It underscores the potential for enhancing not only the rheological and mechanical properties but also the environmental responsiveness of concrete through the innovative utilization of NT@RAs. Full article
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