PMID- 30370900
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20181031
LR  - 20181031
IS  - 1361-6528 (Electronic)
IS  - 0957-4484 (Linking)
VI  - 30
IP  - 1
DP  - 2019 Jan 4
TI  - Preparation of a nanoporous active tungsten foil by two-step anodizing and 
      deoxidized annealing for hydrogen evolution reaction.
PG  - 015603
LID - 10.1088/1361-6528/aae7a7 [doi]
AB  - Nanoporous metals made by anodizing represent a class of active materials with 
      unique structural properties. In this work, nanoporous active W foils (NPAWFs) 
      are prepared via two-step anodizing and deoxidized annealing in hydrogen 
      atmosphere. During the course of this research, the anodizing and annealing 
      conditions have been optimized systematically. The morphology, composition and 
      catalytic property of as-prepared NPAWFs have been characterized by 
      field-emission scanning electron microscope, energy dispersive spectrometer, 
      x-ray diffraction and electrochemical measurements. The final results show that a 
      reduction in the anodizing voltage from 60 V for 60 min to 40 V for 60 min causes 
      better growth of nanoporous structure, and the deoxidation at 700  degrees C for 3 h can 
      remove oxygen in the nanoporous layer while retaining the nanoporous structure 
      and activity. Compared with non-treated W foil, the NPAWF exhibits superior 
      hydrogen evolution reaction (HER) activity with a low onset overpotential of 199 
      mV and Tafel slope of 84 mV dec(-1) due to its nanoporous structure and large 
      specific surface area. Additionally, the NPAWF shows outstanding long-term 
      stability in acidic media, indicating it is a promising transition metal HER 
      electrocatalyst and can also be used as a high active matrix material.
FAU - Zhang, Jie
AU  - Zhang J
AD  - Institute of Advanced Metallic Materials, School of Materials Science and 
      Engineering, Tianjin University, Tianjin 300350, People's Republic of China.
FAU - Huang, Yuan
AU  - Huang Y
FAU - Wang, Zumin
AU  - Wang Z
FAU - Liu, Yongchang
AU  - Liu Y
LA  - eng
PT  - Journal Article
DEP - 20181029
PL  - England
TA  - Nanotechnology
JT  - Nanotechnology
JID - 101241272
EDAT- 2018/10/30 06:00
MHDA- 2018/10/30 06:01
CRDT- 2018/10/30 06:00
PHST- 2018/10/30 06:00 [pubmed]
PHST- 2018/10/30 06:01 [medline]
PHST- 2018/10/30 06:00 [entrez]
AID - 10.1088/1361-6528/aae7a7 [doi]
PST - ppublish
SO  - Nanotechnology. 2019 Jan 4;30(1):015603. doi: 10.1088/1361-6528/aae7a7. Epub 2018 
      Oct 29.