<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>49350</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>28409</pageFirst>
    <pageLast>28420</pageLast>
    <pageNumber/>
    <edition/>
    <issue>53</issue>
    <volume>44</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Dye activation of heterogeneous Copper(II)-Species for visible light driven hydrogen generation</title>
    <abstract language="eng">Heterogeneous Cu catalysts are widely used in photocatalytic hydrogen generation. The typical working mode includes the transfer of photo-induced charges from a semiconductor to CuO which itself is reduced to Cu2O to initiate the catalytic cycle. In this contribution a photosensitizer (dye), excited by visible light absorption, was used to transfer an electron to the CuO which after reduction catalyzes the water reduction to hydrogen. Several copper(II)-catalysts on high surface silica were prepared by impregnation or precipitation and applied in photocatalytic water reduction. The best catalyst CuO(Cl0.1)/SiO2, synthesized via incipient wetness impregnation of CuCl2 in MCM-41 and a following precipitation with NaOH, achieved a 6 times higher activity (1702 mmol h-1 g-1) compared to a previously investigated copper system (280 mmol h-1 g-1 for CuI) under the same reaction conditions. All materials were fully characterized by XRD, TEM and N2 sorption and further by magnetic resonance and X-ray methods EPR, ASAXS and XAS. In situ measurements evidenced a reduction of the initial Cu(II)-species, which confirms the (proposed) photocatalytic mechanism.</abstract>
    <parentTitle language="eng">International Journal of Hydrogen Energy</parentTitle>
    <identifier type="doi">10.1016/j.ijhydene.2019.04.006</identifier>
    <enrichment key="date_peer_review">05.12.2019</enrichment>
    <author>S. Kreft</author>
    <author>Jörg Radnik</author>
    <author>G. Agostini</author>
    <author>M.-M. Pohl</author>
    <author>E. Gericke</author>
    <author>Armin Hoell</author>
    <author>M. Beller</author>
    <author>H. Junge</author>
    <author>S. Wohlrab</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hydrogen generation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CuO nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Molecular sieves</value>
    </subject>
    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
