Efficient visible light-induced degradation of rhodamine B by W(NxS1−x)2 nanoflowers

Abstract

Here, W(NxS1−x)2 nanoflowers were fabricated by simple sintering process. Photocatalytic activity results indicated our fabricated N-doped WS2 nanoflowers shown outstanding photoactivity of degradating of rhodamine B with visible light. Which is attributed to the high separation efficiency of photoinduced electron–hole pairs, the broadening of the valence band (VB), and the narrowing of energy band gap. Meanwhile, our work provided a novel method to induce surface sulfur vacancies in crystals by introduing impurities atoms for enhancing their photodegradation.

Spontaneous ferroelectricity in strained low-temperature monoclinic Fe3O4: A first-principles study

“…The charge separation increases when the strain changes from -6% to 4%, but decreases at S>4%. The change of charge separation at S>4% is consistent with our previous results, 41 which can be attributed to the fluctuation of FeB42-O bonds.…”

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

“…Ternary or multielement metal oxide nanosheets have also been extensively studied for energy-storage devices, such as NiCo 2 O 4 , [315][316][317][318][319] ZnCo 2 O 4 , [320] Li 4 Ti 5 O 12 , [321][322][323][324][325][326][327][328][329] Co 2 GeO 4 , [330] Zn 2 (OH) 3 VO 3 , [331] LiCoO 2 , [332,333] LiNiO 2 , [334,335] LiMn 2 O 4 , [336] NaTiO 2 , [337] NaCoO 2 , [338,339] NaMnO 2 , [340] Na 0.66 [Li 0.22 Ti 0.78 ] O 2 , [341] and 2D/2D hybrid or heterogeneous metal oxide nanosheets. [342][343][344] For example, NiCo 2 O 4 , with a spinelrelated structure, where Ni occupies the octahedral sites and Co is allocated octa-and tetrahedral sites, delivers high electrical conductivity and a theoretical lithium storage capacity of about 890 mA h g −1 .…”

Near infrared-light responsive WS2microengines with high-performance electro- and photo-catalytic activities

“…This results in strong quantum connement of electrons, which along the ultrahigh specic surface results in superior charge transfer. 3,4 Such a unique combination of physical, optical, chemical and electronic properties has been exploited in a myriad of applications such as electronic devices, 5 photocatalysis, [6][7][8] energy storage, 3,9-11 sensing 12-14 and biomedicine. [15][16][17] The fabrication of continuous WS 2 lms has been achieved by top-down exfoliation of the bulk material 18 or bottom-up approaches such as chemical vapor deposition, hydrothermal synthesis or sulfurization.…”