Strain-Driven Polarized Electric Field-Promoted Photocatalytic Activity in Borate-Based CsCdBO₃ Bulk Materials

Abstract

Piezoelectrically polarized electric field can provide a strong driving force for the separation of the photoinduced charge carriers that has attracted a wide attention in the field of photocatalysis. In this paper, a new type of piezoelectric borate material CsCdBO 3 exhibits a high efficiency for the degradation of typical organic pollutants under the synergistic effects of strain and light conditions. The oxidation rate constant of the synergistic effect is 0.653 min −1 , which is 3.77 times that of just under visible light irradiation. Further, the material shows a higher efficiency when treated both under the clockwise stirring direction and a high stirring speed. A characteristic piezoresponse hysteresis loop was detected using the piezoresponse force microscopy (PFM) approach. The strain-driven polarized electric field facilitates to promote the photoinduced electron−hole pair separation, thus enhancing the photocatalytic activity. The present work provides a new direction of the borate with a noncentrosymmetric structure in the environmental remediation.

Effectively enhanced photocatalytic performance of layered perovskite Bi2NdO4Cl by coupling piezotronic effect

“…Commonly, the inverse piezoelectric effect is the process by which the surface volume of the ferric/piezoelectric material expands or contracts under the action of an electric field. 45 To gain insight into the piezo-/ferroelectric property, BNOC was characterized by piezoresponse force microscopy (PFM). Fig.…”

Piezoelectric Effect Enhanced Photocatalytic Activity of Pt/Bi3.4Gd0.6Ti3O12 Plasmonic Photocatalysis

“…Figure 7 b shows the amplitude–voltage curves of Pt/BGTO, which exhibited the typical amplitude–voltage “butterfly loop” curve under the action of an external electric field with a constant amplitude and period, confirming the piezoelectric nature of Pt/BGTO. The maximum displacement was 1.23 nm at a voltage bias of −10.1 V, indicating that a single Pt/BGTO heterojunction has outstanding piezoelectric properties [ 64 , 65 ].…”

MB3P2S10 (M = Rb, Cs): two new alkali metal thioboratephosphates with [B6P4S20] T3-supertetrahedra

“…35–40 In the compounds, there are two basic fundamental building blocks (FBBs), planar [BQ 3 ] (Q = S/Se) and tetrahedral [BQ 4 ], which can be linked with each other to build different geometries, such as T2-/T3 supertetrahedra, one-dimensional (1D) chains, 41–43 two-dimensional (2D) layers, 44 and three-dimensional (3D) networks, 45 similar to the cases in borates. 46–52 Beyond B–Q units, the [PQ 4 ] units in chalcophosphates also show abundant connection modes like isolated [PQ 4 ], ethane-like and edge-sharing [P 2 Q 6 ], corner-sharing [P 2 Q 7 ], [P 2 Q 9 ], [P 3 Q 7 ], and cyclic [P 3 Q 9 ] clusters, and also [P 3 S 10 ], [P 5 Se 12 ], and [P 6 Se 12 ], similar to the cases in phosphates. 53–61…”