3
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Preparation of a g-C 3N 4/UiO-66-NH 2/CdS Photocatalyst with Enhanced Visible Light Photocatalytic Activity for Tetracycline Degradation

      research-article
      1 , 2 , 1 , * , 1 , 2 , *
      Nanomaterials
      MDPI
      photocatalytic, g-C3N4, composite, tetracycline

      Read this article at

      Bookmark
          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

          A combination of calcination and hydrothermal processing was used to prepare a g-C 3N 4/UiO-66-NH 2/CdS photocatalyst, and the degradation of tetracycline (TC) over this material was assessed. The photocatalytic performance of this nanocomposite was approximately 4.4 and 2.3 times those of CdS and g-C 3N 4, respectively, and was found to be affected by the CdS loading amount, the pH of the reaction solution and the initial TC concentration. This catalyst also exhibited stable performance over four consecutive reaction cycles. The highly enhanced photoactivity of the g-C 3N 4/UiO-66-NH 2/CdS is attributed to the introduction of CdS, which widens the range over which the material absorbs visible light and inhibits the recombination of electron–hole pairs. The results of this study suggest further applications for this material in the treatment of contaminated wastewater powered by solar energy.

          Related collections

          Most cited references50

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

          A metal-free polymeric photocatalyst for hydrogen production from water under visible light.

          The production of hydrogen from water using a catalyst and solar energy is an ideal future energy source, independent of fossil reserves. For an economical use of water and solar energy, catalysts that are sufficiently efficient, stable, inexpensive and capable of harvesting light are required. Here, we show that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor. Contrary to other conducting polymer semiconductors, carbon nitride is chemically and thermally stable and does not rely on complicated device manufacturing. The results represent an important first step towards photosynthesis in general where artificial conjugated polymer semiconductors can be used as energy transducers.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Polymeric photocatalysts based on graphitic carbon nitride.

            Semiconductor-based photocatalysis is considered to be an attractive way for solving the worldwide energy shortage and environmental pollution issues. Since the pioneering work in 2009 on graphitic carbon nitride (g-C3N4) for visible-light photocatalytic water splitting, g-C3N4 -based photocatalysis has become a very hot research topic. This review summarizes the recent progress regarding the design and preparation of g-C3N4 -based photocatalysts, including the fabrication and nanostructure design of pristine g-C3N4 , bandgap engineering through atomic-level doping and molecular-level modification, and the preparation of g-C3N4 -based semiconductor composites. Also, the photo-catalytic applications of g-C3N4 -based photocatalysts in the fields of water splitting, CO2 reduction, pollutant degradation, organic syntheses, and bacterial disinfection are reviewed, with emphasis on photocatalysis promoted by carbon materials, non-noble-metal cocatalysts, and Z-scheme heterojunctions. Finally, the concluding remarks are presented and some perspectives regarding the future development of g-C3N4 -based photocatalysts are highlighted.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Enhanced photoresponsive ultrathin graphitic-phase C3N4 nanosheets for bioimaging.

              Two-dimensional nanosheets have attracted tremendous attention because of their promising practical application and theoretical values. The atomic-thick nanosheets are able to not only enhance the intrinsic properties of their bulk counterparts but also give birth to new promising properties. Herein, we highlight an available pathway to prepare the ultrathin graphitic-phase C(3)N(4) (g-C(3)N(4)) nanosheets by a "green" liquid exfoliation route from bulk g-C(3)N(4) in water for the first time. The as-obtained ultrathin g-C(3)N(4) nanosheet solution is very stable in both the acidic and alkaline environment and shows pH-dependent photoluminenscence (PL). Compared to the bulk g-C(3)N(4), ultrathin g-C(3)N(4) nanosheets show enhanced intrinsic photoabsorption and photoresponse, which induce their extremely high PL quantum yield up to 19.6%. Thus, benefiting from the inherent blue light PL with high quantum yields and high stability, good biocompatibility, and nontoxicity, the water-soluble ultrathin g-C(3)N(4) nanosheet is a brand-new but promising candidate for bioimaging application.
                Bookmark

                Author and article information

                Journal
                Nanomaterials (Basel)
                Nanomaterials (Basel)
                nanomaterials
                Nanomaterials
                MDPI
                2079-4991
                12 September 2020
                September 2020
                : 10
                : 9
                : 1824
                Affiliations
                [1 ]School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China; haozhangy@ 123456163.com (H.Z.); xianglei_he@ 123456163.com (X.H.)
                [2 ]Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
                Author notes
                Author information
                https://orcid.org/0000-0002-0684-7400
                Article
                nanomaterials-10-01824
                10.3390/nano10091824
                7558207
                32932729
                a3ba5ed1-50bd-4d32-8afc-5eea8b62b2ca
                © 2020 by the authors.

                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
                : 17 August 2020
                : 09 September 2020
                Categories
                Article

                photocatalytic,g-c3n4,composite,tetracycline
                photocatalytic, g-c3n4, composite, tetracycline

                Comments

                Comment on this article