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Nanomaterials
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Photocatalytic Nanomaterials in Water Decontamination
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Photocatalytic Nanomaterials in Water Decontamination

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 2193

Special Issue Editors

Prof. Dr. Qi Wang

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Guest Editor
School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
Interests: environmental catalysis; heavy metal-organic complexes for water pollution control; photoelectric catalytic degradation of persistent organic pollutants; photo-electric-biological combined denitrification
Dr. Shijie Li

E-Mail Website
Guest Editor
Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, China
Interests: nanotechnology for environmental remediation; semiconductor-mediated photocatalysis; CO2 photoreduction; H2 production
Special Issues, Collections and Topics in MDPI journals
Dr. Derek Hao

E-Mail Website
Guest Editor
Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
Interests: environmental catalysis; photocatalysis; pollution control; novel AOP technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Photocatalytic nanomaterials are widely used in water environment remediation. Drugs, dyes, pesticides, oils, heavy metal ions, bacteria, etc. in wastewater or polluted water can be efficiently treated by photocatalysis. In order to deal with more refractory pollutants and improve the removal rate of pollutants by photocatalytic oxidation/reduction, efforts should be made to improve the activity of photocatalysts and find new catalysts with high utilization of solar energy. The preparation of p-n heterojunctions and the modification of noble metals can improve the photocatalytic activity of nanomaterials. Developing new and cheap photocatalytic nanomaterials is also a top priority. In addition, the impact on the water environment after repair should be considered. While having good photocatalytic activity, the material should have excellent performance: low or no toxicity and reusability.

In the past several decades, various kinds of photocatalytic nanomaterials were developed, including TiO2, Bi2O3, ZnO, WO3, C3N4, HTCC, MOFs, COFs, POPs, etc. The present Special Issue titled “Photocatalytic Nanomaterials in Water Decontamination” aims to present the current state-of-the-art in the use of photocatalytic nanoparticles for the removal of pollutants (organics, heavy metals, bacteria, etc.) from water. In the present Special Issue, we invite contributions from leading groups in the field, with the aim of giving a balanced view of the current state-of-the-art in this discipline.

Prof. Dr. Qi Wang
Dr. Shijie Li
Dr. Derek Hao
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photocatalysis
  • heavy metal
  • organic pollutants
  • bacteria
  • MOFs
  • COFs
  • POPs
  • TiO2
  • ZnO
  • Bi2O3

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Published Papers (2 papers)

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Research

16 pages, 6926 KiB  
Article
The Photocatalytic Activity of CaTiO3 Derived from the Microwave-Melting Heating Process of Blast Furnace Slag
by Jun Xie, Qing Ye, Jianghao Zhou, Yue Liao and Gongming Qian
Nanomaterials 2023, 13(8), 1412; https://doi.org/10.3390/nano13081412 - 19 Apr 2023
Cited by 6 | Viewed by 1605
Abstract
The extraction of titanium-bearing components in the form of CaTiO3 is an efficient utilization of blast furnace slag. The photocatalytic performance of this obtained CaTiO3 (MM-CaTiO3) as a catalyst for methylene blue (MB) degradation was evaluated in this study. [...] Read more.
The extraction of titanium-bearing components in the form of CaTiO3 is an efficient utilization of blast furnace slag. The photocatalytic performance of this obtained CaTiO3 (MM-CaTiO3) as a catalyst for methylene blue (MB) degradation was evaluated in this study. The analyses indicated that the MM-CaTiO3 had a completed structure with a special length–diameter ratio. Furthermore, the oxygen vacancy was easier to generate on a MM-CaTiO3(110) plane during the photocatalytic process, contributing to improving photocatalytic activity. Compared with traditional catalysts, MM-CaTiO3 has a narrower optical band gap and visible-light responsive performance. The degradation experiments further confirmed that the photocatalytic degradation efficiency of pollutants by using MM-CaTiO3 was 3.2 times that of pristine CaTiO3 in optimized conditions. Combined with molecular simulation, the degradation mechanism clarified that acridine of MB molecular was stepwise destroyed by using MM-CaTiO3 in short times, which is different from demethylation and methylenedioxy ring degradation by using TiO2. This study provided a promising routine for using solid waste to obtain catalysts with excellent photocatalytic activity and was found to be in keeping with sustainable environmental development. Full article
(This article belongs to the Special Issue Photocatalytic Nanomaterials in Water Decontamination)
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13 pages, 5317 KiB  
Article
Natural Cotton Cellulose-Supported TiO2 Quantum Dots for the Highly Efficient Photocatalytic Degradation of Dyes
by Hancheng Shen, Weiwei Zhang, Chunyun Guo, Jing Zhu, Junjie Cui, Zhonghua Xue and Peirong Chen
Nanomaterials 2022, 12(18), 3130; https://doi.org/10.3390/nano12183130 - 9 Sep 2022
Cited by 11 | Viewed by 2095
Abstract
The artificial photocatalytic degradation of organic pollutants has emerged as a promising approach to purifying the water environment. The core issue of this ongoing research is to construct efficient but easily recyclable photocatalysts without quadratic harm. Here, we report an eco-friendly photocatalyst with [...] Read more.
The artificial photocatalytic degradation of organic pollutants has emerged as a promising approach to purifying the water environment. The core issue of this ongoing research is to construct efficient but easily recyclable photocatalysts without quadratic harm. Here, we report an eco-friendly photocatalyst with in situ generated TiO2 quantum dots (TQDs) on natural cotton cellulose (CC) by a simple one-step hydrothermal method. The porous fine structure and abundant hydroxyl groups control the shape growth and improve the stability of nanoparticles, making natural CC suitable for TQDs. The TQDs/CC photocatalyst was synthesized without the chemical modification of the TQDs. FE-SEM and TEM results showed that 5–6 nm TQDs are uniformly decorated on the CC surface. The long-term stability in photocatalytic activity and structure of more than ten cycles directly demonstrates the stability of CC on TQDs. With larger CC sizes, TQDs are easier to recycle. The TQDs/CC photocatalysts show impressive potential in the photocatalytic degradation of anionic methyl orange (MO) dyes and cationic rhodamine B (RhB) dyes. Full article
(This article belongs to the Special Issue Photocatalytic Nanomaterials in Water Decontamination)
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