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Nanomaterials
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Advances in Nanoscale Biogeocomplexity
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Advances in Nanoscale Biogeocomplexity

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 November 2022) | Viewed by 3161

Special Issue Editor

Prof. Dr. Biqing Liang

E-Mail Website
Guest Editor
Department of Earth Sciences, National Cheng Kung University, Tainan City, Taiwan
Interests: biogeochemistry; organic geochemistry; black carbon; organomineral interaction; microbialite

Special Issue Information

Dear Colleagues,

Soil organic matter represents the largest terrestrial carbon reservoir on Earth. Derived from incomplete combustion of organic matter, black carbon (BC or pyrogenic carbon, PyC) is predominantly composed of aromatic carbon and includes various pyrogenic products, such as biochar, charcoal, soot, and graphite. Black C is receiving worldwide study attention due to its importance in carbon sequestration, soil fertility improvement, and environmental contaminant remediation. The emerging incorporation of natural and synthetic nano mineral particles to organic carbon has opened up new perspectives in carbon cycling and environmental applications, especially for coping with contaminants. This Special Issue aims to attract interdisciplinary scientific inputs from a diverse background to boost the understanding of nanoscale organomineral interactions and metal–organic complexation. Mechanistic studies of the transformation of recalcitrant organic carbon and the catalytic transformation of contaminants are solicited. The purpose of the present Special Issue is to collect state-of-the-art work, in particular, on the nanoscale interplay between nanomineral particles and organic carbon from a fundamental and application perspective. Review articles or research papers dealing with the preparation methods and properties of nanomineral particles and characterization of their interactions and degradation products or with their environmental fate are welcomed.

Prof. Dr. Biqing Liang
Guest Editor

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.

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Keywords

  • biochar (BC)
  • colloid
  • complexation
  • contaminant
  • degradation
  • nanomineral particles
  • pyrogenic carbon (PyC)
  • transformation

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Published Papers (2 papers)

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Research

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15 pages, 1895 KiB  
Article
Systematic Research on the Transport of Ball-Milled Biochar in Saturated Porous Media: Effect of Humic Acid, Ionic Strength, and Cation Types
by Gang Cao, Jiachang Qiao, Juehao Ai, Shuaiqi Ning, Huimin Sun, Menghua Chen, Lin Zhao, Guilong Zhang and Fei Lian
Nanomaterials 2022, 12(6), 988; https://doi.org/10.3390/nano12060988 - 17 Mar 2022
Cited by 7 | Viewed by 2064
Abstract
Ball-milled biochar (BMBC) is a typical engineering material that has promising application prospects in remediating contaminated soil and water. It is fundamental to rate the transport behaviors of BMBC in the underground environment before extensive use. In this study, the effects of the [...] Read more.
Ball-milled biochar (BMBC) is a typical engineering material that has promising application prospects in remediating contaminated soil and water. It is fundamental to rate the transport behaviors of BMBC in the underground environment before extensive use. In this study, the effects of the ubiquitous cations (Na+, Mg2+, and Al3+) and model organic matter (humic acid) on the transport of BMBC were investigated using laboratory column experiments. The results demonstrated the facilitated effect of HA on the transport of BMBC due to the negatively charged surface and steric effect under neutral conditions. HA and ionic strength manifested an antagonistic effect on the transport of BMBC, where the presence of one could weaken the effect from the other. We also found the charge reversal of the BMBC surface in the presence of Mg2+, thus enhancing the deposition of BMBC onto the medium surface. On the other hand, the charge reversal from Al3+-coupled acid conditions led to the restabilization and transport of BMBC in porous media. Therefore, the rational usage of BMBC is indispensable and more attention should be paid to the composition and change in underground water that might facilitate the transport of BMBC and thus lead to negative environmental implications. Full article
(This article belongs to the Special Issue Advances in Nanoscale Biogeocomplexity)
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Review

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18 pages, 6094 KiB  
Review
Efficient Selective Removal of Radionuclides by Sorption and Catalytic Reduction Using Nanomaterials
by Min Xu, Yawen Cai, Guohe Chen, Bingfeng Li, Zhongshan Chen, Baowei Hu and Xiangke Wang
Nanomaterials 2022, 12(9), 1443; https://doi.org/10.3390/nano12091443 - 23 Apr 2022
Cited by 8 | Viewed by 2572
Abstract
With the fast development of industry and nuclear energy, large amounts of different radionuclides are inevitably released into the environment. The efficient solidification or elimination of radionuclides is thereby crucial to environmental pollution and human health because of the radioactive hazardous of long-lived [...] Read more.
With the fast development of industry and nuclear energy, large amounts of different radionuclides are inevitably released into the environment. The efficient solidification or elimination of radionuclides is thereby crucial to environmental pollution and human health because of the radioactive hazardous of long-lived radionuclides. The properties of negatively or positively charged radionuclides are quite different, which informs the difficulty of simultaneous elimination of the radionuclides. Herein, we summarized recent works about the selective sorption or catalytic reduction of target radionuclides using different kinds of nanomaterials, such as carbon-based nanomaterials, metal–organic frameworks, and covalent organic frameworks, and their interaction mechanisms are discussed in detail on the basis of batch sorption results, spectroscopy analysis and computational calculations. The sorption-photocatalytic/electrocatalytic reduction of radionuclides from high valent to low valent is an efficient strategy for in situ solidification/immobilization of radionuclides. The special functional groups for the high complexation of target radionuclides and the controlled structures of nanomaterials can selectively bind radionuclides from complicated systems. The challenges and future perspective are finally described, summarized, and discussed. Full article
(This article belongs to the Special Issue Advances in Nanoscale Biogeocomplexity)
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