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author:

Wang, Z. (Wang, Z..) [1] | Wang, H. (Wang, H..) [2] | Shi, Y. (Shi, Y..) [3] | Liu, C. (Liu, C..) [4] | Wu, L. (Wu, L..) [5] | Liang, S. (Liang, S..) [6]

Indexed by:

Scopus

Abstract:

AuPt alloy/SnNb2O6 ultrathin nanosheet (AuPt/SN) as a photocatalyst is constructed for selective hydrogenation of p-chloronitrobenzene (p-CNB) under visible light irradiation. A typical catalyst (Au0.5Pt0.5/SN) exhibits a high conversion of halonitrobenzenes (99.8%) and selectivity of haloaniline (99.1%). The results of in situ ATR-IR, XPS and Raman indicate a preferential chemoselective adsorption of –NO2 that Lewis base sites (Sn2+) on the catalyst could selectively coordinate with –NO2 whereas C-Cl bond is not be bonded, improving the catalytic selectivity. Atom Pt in alloy is responsible for the formation of ·H, while Au inhabits the dissociation of C-Cl via repressing the generation of Pt-H. The photogenerated electrons can accelerate the ·H formation. ·H could be transferred to Sn2+ sites for the hydrogenation of –NO2 by hydrogen spillover. Therefore, the high performance of the catalyst can be attributed to a surface synergetic effect among Lewis base sites (Sn2+), AuPt alloy and photogenerated electrons. © 2022 Elsevier Ltd

Keyword:

AuPt alloy Halonitrobenzenes Lewis Base sites Photocatalytic hydrogenation SnNb2O6 nanosheets

Community:

  • [ 1 ] [Wang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 2 ] [Wang, H.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 3 ] [Shi, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 4 ] [Liu, C.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 5 ] [Wu, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou, 350002, China
  • [ 6 ] [Liang, S.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address:

  • [Wu, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fujian, China

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Source :

Chemical Engineering Science

ISSN: 0009-2509

Year: 2022

Volume: 262

4 . 7

JCR@2022

4 . 1 0 0

JCR@2023

ESI HC Threshold:74

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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