TY - JOUR
T1 - {110} Surface-Exposed Bi3.15Nd0.85Ti3O12 Ferroelectric Nanosheet Arrays on Porous Ceramics as Efficient and Recyclable Piezo- Photocatalysts
AU - Bowen, Chris
PY - 2025/1/27
Y1 - 2025/1/27
N2 - Bismuth layered ferroelectric nanomaterials exhibit great potential for piezo-photocatalysis. However, a major challenge lies in the difficulty of recovering the catalytic powders, raising concerns about secondary pollution of water. In this work, a novel hierarchical porous ferroelectric ceramic containing {110} surface-exposed Bi3.15Nd0.85Ti3O12 (BIT-Nd) nanosheet arrays that were grown on a porous ceramic matrix has been fabricated for efficient and recyclable piezo-photocatalysis. By controlling the BIT-Nd loading level of nanosheets, the piezo-photocatalytic degradation efficiency of RhB (C0 = 10 mg/L) solution reached the optimum value of 97.1% in 100 minutes with a first-order kinetic rate constant, k, of up to 0.0321 min-1 in Bi3.15Nd0.85Ti3O12-20 (BITNd-20), with a mass ratio of hydrothermal products to ceramics of 20%. In the presence of 2.566 g of BITNd-20, a surprising H2 yield rate of 130 μmol·h-1 was achieved without cocatalyst or scavenger. Specially, the beneficial role of snowflake structures on piezoelectric potential amplification and introducing nanosheets with exposed {110} surfaces on hydrogen evolution reaction (HER) activity, piezoelectric potential output, and catalytic performance of porous ceramics has been revealed. The uniquely designed strategy provides a new approach to enhance the piezo-photocatalytic activity by addressing environmental issues and enhancing catalytic performance to yield cleaner energy.
AB - Bismuth layered ferroelectric nanomaterials exhibit great potential for piezo-photocatalysis. However, a major challenge lies in the difficulty of recovering the catalytic powders, raising concerns about secondary pollution of water. In this work, a novel hierarchical porous ferroelectric ceramic containing {110} surface-exposed Bi3.15Nd0.85Ti3O12 (BIT-Nd) nanosheet arrays that were grown on a porous ceramic matrix has been fabricated for efficient and recyclable piezo-photocatalysis. By controlling the BIT-Nd loading level of nanosheets, the piezo-photocatalytic degradation efficiency of RhB (C0 = 10 mg/L) solution reached the optimum value of 97.1% in 100 minutes with a first-order kinetic rate constant, k, of up to 0.0321 min-1 in Bi3.15Nd0.85Ti3O12-20 (BITNd-20), with a mass ratio of hydrothermal products to ceramics of 20%. In the presence of 2.566 g of BITNd-20, a surprising H2 yield rate of 130 μmol·h-1 was achieved without cocatalyst or scavenger. Specially, the beneficial role of snowflake structures on piezoelectric potential amplification and introducing nanosheets with exposed {110} surfaces on hydrogen evolution reaction (HER) activity, piezoelectric potential output, and catalytic performance of porous ceramics has been revealed. The uniquely designed strategy provides a new approach to enhance the piezo-photocatalytic activity by addressing environmental issues and enhancing catalytic performance to yield cleaner energy.
U2 - 10.1002/smll.202410145
DO - 10.1002/smll.202410145
M3 - Article
SN - 1613-6810
JO - Small
JF - Small
M1 - 2410145
ER -