Sökning: WFRF:(Singh Deobrat)
> (2016) >
2D-HfS2 as an effic...
2D-HfS2 as an efficient photocatalyst for water splitting
-
- Singh, Deobrat (författare)
- SV Natl Inst Technol, Dept Appl Phys, Adv Mat Lab, Surat 395007, India.
-
- Gupta, Sanjeev K. (författare)
- St Xaviers Coll, Dept Phys, Computat Mat & Nanosci Grp, Ahmadabad 380009, Gujarat, India.
-
- Sonvane, Yogesh (författare)
- SV Natl Inst Technol, Dept Appl Phys, Adv Mat Lab, Surat 395007, India.
-
visa fler...
-
- Kumar, Ashok (författare)
- Cent Univ Punjab, Ctr Phys Sci, Bathinda 151001, India.
-
- Ahuja, Rajeev (författare)
- Uppsala universitet,Materialteori
-
visa färre...
-
SV Natl Inst Technol, Dept Appl Phys, Adv Mat Lab, Surat 395007, India St Xaviers Coll, Dept Phys, Computat Mat & Nanosci Grp, Ahmadabad 380009, Gujarat, India. (creator_code:org_t)
- 2016
- 2016
- Engelska.
-
Ingår i: Catalysis Science & Technology. - : Royal Society of Chemistry (RSC). - 2044-4753 .- 2044-4761. ; 6:17, s. 6605-6614
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Two dimensional monolayer nanostructures for water splitting solar photocatalysts are drawing more attention due to their extraordinary properties. Using first principles calculations we have systematically investigated the structural, electronic and vibrational properties of corresponding HfS2 monolayers in both hexagonal (1H) and trigonal (1T) phases. The most stable adsorption configurations and adsorption energies are calculated. The adsorption energy of H2O on the substrate is 646.53 kJ mol(-1) for the 1H-phase and 621.65 kJ mol(-1) for the 1T-phase of HfS2. This shows that H2O molecules have a stronger interaction with the HfS2 substrate. The calculated redox potentials of H2O splitting lie properly astride the valence and conduction bands, suggesting that the monolayers of 1H- and 1T-HfS2 show the same characteristics as a photocatalyst for water splitting. Furthermore, we also calculated that the optical band gaps for the 1H and 1T phases of HfS2 are 2.60 eV and 3.10 eV, respectively. We have also calculated Raman spectrum signatures of the monolayer 1H and 1T-phase of the in-plane vibrational mode of the Hf and S atoms (E1g) and the out-of-plane vibrational mode of S atoms (A(1g) and A(2u)). Our work suggests that a lot more research and attention in this field is needed for the practical application of the material as visible light active photocatalysts.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas