Zhang Yan, Thuy Phuong Pham Thi, Hoang Duy Nguyen Phuc, Roake Eleanor, Khanbareh Hamideh, Hopkins Margaret, Zhou Xuefan, Zhang Dou, Zhou Kechao, Bowen Chris
State Key Laboratory of Powder Metallurgy, Central South University Hunan 410083 China.
Institute of Chemical Technology, Vietnam Academy of Science and Technology TL29 Street, Thanh Loc Ward, District 12 HCM City Vietnam
Nanoscale Adv. 2021 Feb 15;3(5):1362-1374. doi: 10.1039/d1na00013f. eCollection 2021 Mar 9.
The reduction of CO into useful hydrocarbon chemicals has attracted significant attention in light of the depletion in fossil resources and the global demand for sustainable sources of energy. In this paper, we demonstrate piezo-catalytic electrochemical reduction of CO by exploiting low Curie temperature, ∼ 38 °C, Nb-doped lead zirconate titanate (PZTN) piezoelectric particulates. The large change in spontaneous polarisation of PZTN due to the acoustic pressures from to the application of ultrasound in the vicinity of the creates free charges for CO reduction. The effect of applied acoustic power, particulate agglomeration and the impact of on piezo-catalytic performance are explored. By optimization of the piezo-catalytic effect a promising piezo-catalytic CO reduction rate of 789 μmol g h is achieved, which is much larger than the those obtained from pyro-catalytic effects. This efficient and polarisation tunable piezo-catalytic route has potential to promote the development of CO reduction the utilization of vibrational energy for environmental improvement.
鉴于化石资源的枯竭以及全球对可持续能源的需求，将一氧化碳还原为有用的碳氢化合物化学品已引起了广泛关注。在本文中，我们通过利用低居里温度（约38°C）的铌掺杂锆钛酸铅（PZTN）压电颗粒，展示了压电催化电化学还原一氧化碳的过程。由于在颗粒附近施加超声波产生的声压，PZTN自发极化的巨大变化为一氧化碳还原创造了自由电荷。研究了施加的声功率、颗粒团聚以及颗粒尺寸对压电催化性能的影响。通过优化压电催化效应，实现了有前景的789 μmol g⁻¹ h⁻¹的压电催化一氧化碳还原速率，这比热催化效应获得的速率要大得多。这种高效且极化可调的压电催化途径有潜力促进一氧化碳还原的发展以及利用振动能量改善环境。
