3 years ago

Understanding the Correlation of Crystal Atoms with Photochemistry Property: Zn5(OH)6(CO3)2 vs. ZnCO3

Zhe Liu, Fei Teng


In this work, Zn5(OH)6(CO3)2 nanosheets are prepared by a simple hydrothermal method, and ZnCO3 are also prepared to compare. It is found that compared with ZnCO3, hydroxyl anion greatly changes energy band structure and oxidation potential of valence band, and improves charge separation efficiency and rates of Zn5(OH)6(CO3)2. The time‐resolved photoluminescence (PL) results show that the average lifetime (τ) of carriers is 1.485 ns for Zn5(OH)6(CO3)2, while 0.380 ns for ZnCO3, illustrating a greatly low carrier recombination rate of Zn5(OH)6(CO3)2; and Zn5(OH)6(CO3)2 has a 20 times photocurrent higher than ZnCO3. Besides, Zn5(OH)6(CO3)2 has a greatly higher oxidation potential (5.05 V) than ZnCO3 (3.17 V), suggesting a high oxidizing ability of Zn5(OH)6(CO3)2. Under ultraviolet light irradiation (λ≤400 nm), 92% of MB can be degraded by Zn5(OH)6(CO3)2 after 80 min, which is 2.31 times as high as that of ZnCO3, although Zn5(OH)6(CO3)2 has a lower BET area (5.8 m2g−1) than ZnCO3 (7.7 m2g−1). This work favors to insight into the correlation of crystal atoms with photochemistry property for a photocatalyst.

Publisher URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/slct.201801420

DOI: 10.1002/slct.201801420

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.