Ultrahigh piezocatalytic capability in eco-friendly BaTiO3 nanosheets promoted by 2D morphology engineering

Yu, Chengye; Tan, Mengxi; Li, Yang; Liu, Chuanbao; Yin, Ruowei; HaiBo, Meng; Su, Yanjing; Li, Qiao; Bai, Yang

doi:10.1016/j.jcis.2021.03.040

Cited by 111 publications

(37 citation statements)

References 42 publications

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“…The elastic, dielectric, and piezoelectric coefficients were taken from literature values. [ 20,46 ] As displayed in Figure a, an exceptional maximal piezopotential of 44.1 V was obtained for SnSe NSs under a cavitation pressure of 100 MPa, which is about an order of magnitude higher than reported values for conventional piezoelectric nanomaterials such as KNbO 3 (1.4 V) [ 37 ] and BaTiO 3 (8.3 V), [ 38 ] as well as 2D piezoelectric materials such as C 3 N 4 (2.7 V) [ 6 ] under the same simulation conditions. The extremely high piezopotential obtained by FEM simulation should be originated from the highest piezoelectric coefficients and the lowest elastic modulus predicted for SnSe among all reported 2D materials.…”

Section: Resultsmentioning

confidence: 85%

“…This result is well consistent with reported works of other 2D piezocatalysis materials. [ 37,38 ] A comparison with existing piezoelectric catalysts (Table S2, Supporting Information) shows that the efficiency is among the highest value of reported works, such as representative perovskite oxides (e.g., BiFeO 3 , [ 4 ] Bi 2 WO 6 , [ 5 ] and BaTi 0.89 Sn 0.11 O 3 [ 39 ] ) and 2D TMCs (e.g., MoS 2 [ 9 ] and CdS [ 10 ] ), and comparable with the most widely investigated photocatalysis technology. It is worth noting that atomically thin 2D piezoelectrics exhibited exceptional H 2 production efficiency, reaching 1.08 mmol g −1 h −1 for ZnS (≈2 nm) [ 11 ] and 8.35 mmol g −1 h −1 for C 3 N 4 (≈1.5 nm).…”

Section: Resultsmentioning

confidence: 96%

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Mechanically Induced Highly Efficient Hydrogen Evolution from Water over Piezoelectric SnSe nanosheets

Zhao

et al. 2022

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Piezoelectric nanomaterials open new avenues in driving green catalysis processes (e.g., H2 evolution from water) through harvesting mechanical energy, but their catalytic efficiency is still limited. The predicted enormous piezoelectricity for 2D SnSe, together with its high charge mobility and excellent flexibility, renders it an ideal candidate for stimulating piezocatalysis redox reactions. In this work, few‐layer piezoelectric SnSe nanosheets (NSs) are utilized for mechanically induced H2 evolution from water. The finite elemental method simulation demonstrates an unprecedent maximal piezoelectric potential of 44.1 V for a single SnSe NS under a pressure of 100 MPa. A record‐breaking piezocurrent density of 0.3 mA cm−2 is obtained for SnSe NSs‐based electrode under ultrasonic excitation (100 W, 45 kHz), which is about three orders of magnitude greater than that of reported piezocatalysts. Moreover, an exceptional H2 production rate of 948.4 µmol g−1 h−1 is achieved over the SnSe NSs without any cocatalyst, far exceeding most of the reported piezocatalysts and competitive with the current photocatalysis technology. The findings not only enrich the potential piezocatalysis materials, but also provide useful guidance toward high‐efficiency mechanically driven chemical reactions such as H2 evolution from water.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 96%

Mechanically Induced Highly Efficient Hydrogen Evolution from Water over Piezoelectric SnSe nanosheets

Zhao

et al. 2022

Small

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“…The control of morphology, size, phase, crystallinity, and synthetic method can tune the piezoelectric property of catalysts. Ye et al [334] regulated synthetic routes and conditions to successfully prepare BaTiO 3 nanosheets (NSs), nanoparticles (NPs), and nanowires (NWs). And BaTiO 3 nanosheets have the smallest BET surface area of 3.86 m 2 g −1 and highest H 2 productivity of 655 µmol g −1 h −1 among three samples.…”

Section: Piezocatalytic Energy Carrier Production By Titanatesmentioning

confidence: 99%

mentioning

confidence: 99%

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Wang

Zhang

2021

Adv Funct Materials

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Global warming, energy deficiency, and environmental deterioration triggered by burning fossil fuels, may severely impair economic development and human life and health. Green solar power, mechanical energy, and temperature fluctuation heat energy abound in nature and are readily accessible. Thanks to various appealing characteristics, titanates are universally employed to harvest these sustainable energy sources to produce renewable fuels through photocatalysis, piezocatalysis, and pyrocatalysis, alleviating above serious issues. In this review, the research progress in energy catalysis driven by solar light, mechanical stress, and temperature fluctuation over titanates is comprehensively described. It starts with the classification and introduction of diverse titanates. Next, the main methods for preparing titanates are introduced. Highlighted are titanates acting as cocatalysts, photocatalysts, piezocatalysts, and pyrocatalysts to participate in water splitting reaction for H 2 evolution and atmospheric CO 2 reduction conversion into CO or hydrocarbons. In particular, the material modification strategies for improving photocatalytic performance are discussed. Finally, the rosy prospects of the future development of energy catalysis application for titanates are looked into.

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“…The ever-increasing energy crisis and environmental pollution have seriously threatened the sustainable development of society [1][2][3][4][5]. As a promising technology to solve these problems, photocatalysis has attracted of photo-generated carriers both in the bulk and on the surface.…”

Section: Introduction mentioning

confidence: 99%

Remarkably enhanced piezo-photocatalytic performance in BaTiO3/CuO heterostructures for organic pollutant degradation

Tan

Tao

et al. 2022

J Adv Ceram

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Introducing polarization field of piezoelectric materials is an effective strategy to improve photocatalytic performance. In this study, a new type of BaTiO3/CuO heterostructure catalyst was designed and synthesized to achieve high piezo-photocatalytic activity through the synergy of heterojunction and piezoelectric effect. The BaTiO3/CuO heterostructure shows a significantly enhanced piezo-photocatalytic degradation efficiency of organic pollutants compared with the individual BaTiO3 nanowires (NWs) and CuO nanoparticles (NPs). Under the co-excitation of ultrasonic vibration and ultraviolet radiation, the optimal degradation reaction rate constant k of polarized BaTiO3/CuO heterostructure on methyl orange (MO) dye can reach 0.05 min−1, which is 6.1 times of photocatalytic rate and 7 times of piezocatalytic rate. The BaTiO3/CuO heterostructure with remarkable piezo-photocatalytic behavior provides a promising strategy for the development of high-efficiency catalysts for wastewater purification, and it also helps understand the coupling mechanism between piezoelectric effect and photocatalysis.

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Ultrahigh piezocatalytic capability in eco-friendly BaTiO3 nanosheets promoted by 2D morphology engineering

Cited by 111 publications

References 42 publications

Mechanically Induced Highly Efficient Hydrogen Evolution from Water over Piezoelectric SnSe nanosheets

Mechanically Induced Highly Efficient Hydrogen Evolution from Water over Piezoelectric SnSe nanosheets

Versatile Titanates: Classification, Property, Preparation, and Sustainable Energy Catalysis

Remarkably enhanced piezo-photocatalytic performance in BaTiO3/CuO heterostructures for organic pollutant degradation

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