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author：

Sun, D. (Sun, D..) [1] | Liu, W. (Liu, W..) [2] | Fu, Y. (Fu, Y..) [3] | Fang, Z. (Fang, Z..) [4] | Sun, F. (Sun, F..) [5] | Fu, X. (Fu, X..) [6] | Zhang, Y. (Zhang, Y..) [7] | Li, Z. (Li, Z..) [8]

Indexed by：

Scopus

Abstract：

M-doped　NH2-MIL-125(Ti)　(M=Pt　and　Au)　were　prepared　by　using　the　wetness　impregnation　method　followed　by　a　treatment　with　H2　flow.　The　resultant　samples　were　characterized　by　powder　X-ray　diffraction　(XRD),　X-ray　photoelectron　spectroscopy　(XPS),　X-ray　absorption　fine　structure　(XAFS)　analyses,　N2-sorption　BET　surface　area,　and　UV/Vis　diffuse　reflectance　spectroscopy　(DRS).　The　photocatalytic　reaction　carried　out　in　saturated　CO2　with　triethanolamine　(TEOA)　as　sacrificial　agent　under　visible-light　irradiations　showed　that　the　noble　metal-doping　on　NH　2-MIL-125(Ti)　promoted　the　photocatalytic　hydrogen　evolution.　Unlike　that　over　pure　NH2-MIL-125(Ti),　in　which　only　formate　was　produced,　both　hydrogen　and　formate　were　formed　over　Pt-　and　Au-loaded　NH　2-MIL-125(Ti).　However,　Pt　and　Au　have　different　effects　on　the　photocatalytic　performance　for　formate　production.　Compared　with　pure　NH　2-MIL-125(Ti),　Pt/NH2-MIL-125(Ti)　showed　an　enhanced　activity　for　photocatalytic　formate　formation,　whereas　Au　has　a　negative　effect　on　this　reaction.　To　elucidate　the　origin　of　the　different　photocatalytic　performance,　electron　spin　resonance　(ESR)　analyses　and　density　functional　theory　(DFT)　calculations　were　carried　out　over　M/NH2-MIL-125(Ti).The　photocatalytic　mechanisms　over　M/NH2-MIL-125(Ti)　(M=Pt　and　Au)　were　proposed.　For　the　first　time,　the　hydrogen　spillover　from　the　noble　metal　Pt　to　the　framework　of　NH2-MIL-125(Ti)　and　its　promoting　effect　on　the　photocatalytic　CO2　reduction　is　revealed.　The　elucidation　of　the　mechanism　on　the　photocatalysis　over　M/NH2-MIL-125(Ti)　can　provide　some　guidance　in　the　development　of　new　photocatalysts　based　on　MOF　materials.　This　study　also　demonstrates　the　potential　of　using　noble　metal-doped　MOFs　in　photocatalytic　reactions　involving　hydrogen　as　a　reactant,　like　hydrogenation　reactions.　Noble　performance:　The　loading　of　noble　metals　can　promote　the　photocatalytic　hydrogen　evolution　over　NH2-MIL-125(Ti),　but　Pt　and　Au　have　different　effects　on　its　photocatalytic　formate　production　(see　figure).　©　2014　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim.

Keyword：

hydrogen; metal-organic frameworks; noble metals; photocatalytic; visible light

Community：

  • [ 1 ] [Sun, D.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [Liu, W.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 3 ] [Fu, Y.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Fu, Y.]Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, China
  • [ 5 ] [Fang, Z.]College of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 6 ] [Sun, F.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 7 ] [Fu, X.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 8 ] [Zhang, Y.]College of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 9 ] [Zhang, Y.]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen, 361005, China
  • [ 10 ] [Li, Z.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 11 ] [Li, Z.]College of Chemistry, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

  • [Zhang, Y.]College of Chemistry, Fuzhou University, Fuzhou 350002, China

Email：


zhangyf@fzu.edu.cn
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Source ：

Chemistry - A European Journal

ISSN： 0947-6539

Year： 2014

Issue： 16

Volume： 20

Page： 4780-4788

5 . 7 3 1

JCR@2014

3 . 9 0 0

JCR@2023

ESI HC Threshold：268

JCR Journal Grade：1

CAS Journal Grade：2

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 251

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

Affiliated Colleges：

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