For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
7
views
64
references
 Top references
cited by
9
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      451
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Applications of Mechanochemically Prepared Layered Double Hydroxides as Adsorbents and Catalysts: A Mini-Review

      review-article
      Author(s): 1 , 1 , 1 , 2 , *
      Publication date (Electronic):
      Journal: Nanomaterials
      Publisher: MDPI
      Keywords: layered double hydroxides, mechanochemistry, application, review

      Read this article at

      ScienceOpenPublisherPMC
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Mechanochemically prepared layered double hydroxide (M-LDH), which usually possesses high surface chemical activity and a substantial amount of surface defects, has presented outstanding application performance especially in the area of environmental protection. Recently published works on the mechanochemical synthesis of LDH were first introduced to provide a comprehensive summary on the preparation of the materials. Ensuing discussion provided an overview of recent research on the applications of M-LDH products as adsorbents and catalysts. The excellent adsorption performance and fast adsorption rate of the precursor of LDH produced by dry milling of raw materials was identified. The catalytic performances of M-LDH as catalysts, mainly photocatalysts, were then introduced. It is foreseeable that by rational utilization of mechanochemical processes and the unique chemical properties of M-LDH, increasing numbers of applications using M-LDH could be expected.

          Related collections

          Most cited references64

          • Record: found
          • Abstract: found
          • Article: not found

          Application of layered double hydroxides for removal of oxyanions: a review.

          Chien-Hui Goh, Teik-Thye Lim, Z Dong (2008)
          Layered double hydroxides (LDHs) are lamellar mixed hydroxides containing positively charged main layers and undergoing anion exchange chemistry. In recent years, many studies have been devoted to investigating the ability of LDHs to remove harmful oxyanions such as arsenate, chromate, phosphate, etc. from contaminated waters by both surface adsorption and anion exchange of the oxyanions for interlayer anions in the LDH structure. This review article provides an overview of the LDH synthesis methods, the LDH characterization techniques, and the recent advancement that has been achieved in oxyanion removal using LDHs, highlighting areas of consensus and currently unresolved issues. Experimental studies relating to the sorption behaviors of LDHs with various oxyanions, and the kinetic models adopted to explain the adsorption rate of oxyanions from aqueous solution onto LDHs, have been comprehensively reviewed. This review discusses several key factors such as pH, competitive anions, temperature, etc., that influence the oxyanion adsorption on LDHs. The reusability of LDHs is discussed and some mechanistic studies of oxyanion adsorption on LDHs are highlighted. The sorption capacities of LDHs for various oxyanions are also compared with those of other adsorbents. In addition, this review critically identifies the shortcomings in current research on LDHs, such as the common weaknesses in the adopted methodology, discrepancies among reported results and ambiguous conclusions. Possible improvement of LDHs and potential areas for future application of LDHs are also proposed.
          Article 0 comments Cited 264 times – based on 0 reviews     Review now
            • Record: found
            • Abstract: found
            • Article: not found

            Fabrication of composite photocatalyst g-C3N4-ZnO and enhancement of photocatalytic activity under visible light.

            An-Jian Xie, Jun-Fa Zhu, Yu-Hua Shen … (2012)
            The g-C(3)N(4)-ZnO composite photocatalysts with various weight percents of ZnO were synthsized by a simple calcination process. The photocatalysts were characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), UV-vis diffuse reflection spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). The PXRD and HR-TEM results show that the composite materials consist of hexagonal wurzite phase ZnO and g-C(3)N(4). The solid-state UV-vis diffuse reflection spectra show that the absorption edge of the composite materials shifts toward the lower energy region and to longer wavelengths in comparison with pure ZnO and g-C(3)N(4). Remarkably, the photocatalytic activity of g-C(3)N(4)-ZnO composites has been demonstrated, via photodegradation of Methyl Orange (MO) and p-nitrophenol experiments. The photocatalytic activity of g-C(3)N(4)-ZnO for photodegradation of Methyl Orange and p-nitrophenol under visible light irradiation was increased by over 3 and 6 times, respectively, to be much higher than that of single-phase g-C(3)N(4), clearly demonstrating a synergistic effect between ZnO and g-C(3)N(4). The concentrations of Zn(2+) in g-C(3)N(4)-ZnO system after a photocatalytic reaction at various reaction times were found to be much lower than those for a ZnO system under the same reaction conditions, indicating that the g-C(3)N(4)-ZnO composite possesses excellent long-term stability for a photocatalytic reaction in aqueous solutions. Furthermore, a synergistic photocatalysis mechanism between ZnO and g-C(3)N(4) was proposed based on the photodegradation results. Such obviously improved performance of g-C(3)N(4)-ZnO can be ascribed mainly to the enhancement of electron-hole separations at the interface of ZnO and g-C(3)N(4).
            Article 0 comments Cited 168 times – based on 0 reviews     Review now
              • Record: found
              • Abstract: found
              • Article: not found

              Nanoparticle-Stacked Porous Nickel-Iron Nitride Nanosheet: A Highly Efficient Bifunctional Electrocatalyst for Overall Water Splitting.

              Chao Xie, Shuangyin Wang, Jia Huo … (2016)
              Nanoparticle-stacked porous Ni3FeN nanosheets were synthesized through a simple nitridation reaction of the corresponding LDHs. The nanosheet is composed of stacked nanoparticles with more active sites exposed for electrocatalytic reactions. Thus, it exhibited excellent oxygen evolution reaction performance having an extremely low overpotential of 223 mV at 10 mA/cm(2) and hydrogen evolution reaction property with a very low overpotential of 45 mV at 10 mA/cm(2). This electrocatalyst as bifunctional electrodes is used to overall water splitting in alkaline media, showing a high performance with 10 mA/cm(2) at a cell voltage of 1.495 V.
              Article 0 comments Cited 112 times – based on 0 reviews     Review now
                All references

                Author and article information

                Journal
                Journal ID (nlm-ta): Nanomaterials (Basel)
                Journal ID (iso-abbrev): Nanomaterials (Basel)
                Journal ID (publisher-id): nanomaterials
                Title: Nanomaterials
                Publisher: MDPI
                ISSN (Electronic): 2079-4991
                Publication date (Electronic): 08 January 2019
                Publication date Collection: January 2019
                Volume: 9
                Issue: 1
                Electronic Location Identifier: 80
                Affiliations
                [1 ]Key Laboratory of Resources Green Conversion and Utilization of the State Ethnic Affairs Commission & Ministry of Education, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, China; qujun2018@ 123456scuec.edu.cn (J.Q.); shalin1994@ 123456163.com (L.S.); cjscun@ 123456mail.scuec.edu.cn (C.W.)
                [2 ]School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China
                Author notes
                [* ]Correspondence: zhangqw@ 123456whut.edu.cn ; Tel.: +86-027-87651816
                Article
                Publisher ID: nanomaterials-09-00080
                DOI: 10.3390/nano9010080
                PMC ID: 6359472
                PubMed ID: 30626167
                SO-VID: 19c4407c-e0e2-4100-a501-fd067a2aa025
                Copyright © © 2019 by the authors.
                License:

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 14 November 2018
                Date accepted : 04 January 2019
                Categories
                Subject: Review

                Keywords: layered double hydroxides,mechanochemistry,application,review
                Data availability:
                Keywords: layered double hydroxides, mechanochemistry, application, review

                Comments

                Comment on this article

                Related Documents Log
                scite_

                Similar content451

                See all similar

                Cited by9

                See all cited by

                Most referenced authors613

                See all reference authors