Piezo‐Catalytic Effect on the Enhancement of the Ultra‐High Degradation Activity in the Dark by Single‐ and Few‐Layers MoS₂ Nanoflowers

Abstract

Single- and few-layer MoS2 nanoflowers are first discovered to have a piezo-catalyst effect, exhibiting an ultra-high degradation activity in the dark by introducing external mechanical strains. The degradation ratio of the Rhodamine-B dye solution reaches 93% within 60 s under ultrasonic-wave assistance in the dark.

Effect of Controlled Oxygen Vacancy on H2‐Production through the Piezocatalysis and Piezophototronics of Ferroelectric R3C ZnSnO3 Nanowires

“…The piezoelectricity-induced HER, via the piezocatalysis process (without light irradiation), reaches an optimal H 2 -production rate of approximately 3453.1 µmol g −1 h −1 . [15] Bear this in mind, mechanical energy is naturally available anytime and anywhere. This theoretical analysis indicates that the photo catalytic and piezocatalytic effects can synergistically enhance piezophototronic performance through capitalizing on well-modulated oxygen vacancies in ferroelectric semiconductors.…”

“…In particular, electrocatalysis [4] and photocatalysis [5] are promising processes for converting solar energy into chemical energy through the irradiation of sunlight. [15] Bear this in mind, mechanical energy is naturally available anytime and anywhere. [10] A sustained effort should be made to accelerate the process of catalyst development using a variety of methods.…”

Photocatalytic, piezocatalytic, and piezo‐photocatalytic effects in ferroelectric (Ba0.875Ca0.125)(Ti0.95Sn0.05)O3 ceramics

“…Similarly, the piezo‐photocatalytic mechanism is shown in Figure B. In recent past, piezocatalytic and piezo‐photocatalytic were reported by few researchers …”

“…In recent past, piezocatalytic and piezophotocatalytic were reported by few researchers. [40][41][42][43][44][45][46] Figure 6 shows the repetitive piezo-photocatalytic degradation performance of poled BCT-Sn powder using MB dye. The degradation of MB was calculated using the following;…”

Preparation and photocatalytic performance of TiO2/PbTiO3 fiber composite enhanced by external force induced piezoelectric field

“…By applying ultrasonic or mechanical force to the piezoelectric photocatalyst, the free current in the conventional semiconductor photocatalyst is improved. [17][18][19][20][21][22][23][24][25][26][27][28][29][30] At the same time, the high energy density and non-contact nature of the ultrasonic wave provide a practical application for the piezoelectric electric field to improve the photocatalytic activity of the semiconductors.…”