Preparation of basalt fiber@perovskite PbTiO3 core–shell composites and their effects on CH4 production from CO2 photoreduction

Selective Chemical Epitaxial Growth of TiO2 Islands on Ferroelectric PbTiO3 Crystals to Boost Photocatalytic Activity

“…So far, many bare ferroelectric semiconductors and their composites with unique charge transport behaviors have been investigated for enhanced photocatalytic or photoelectrochemical reaction activities. [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] Developing such ferroelectric-based photocatalysts is therefore anticipated to address the challenge of the low-efficiency charge separation that most common photocatalysts have, and this is considered a vital step of the three distinct steps in photocatalysis (light absorption, charge separation, and surface catalysis reaction). [40][41][42][43][44][45][46][47] Photocatalysts for water splitting to produce H 2 , or for CO 2 reduction to produce high-value chemicals, usually consist of semiconductors as a light absorber and co-catalysts as both the collector and reaction center of the photogenerated charges.…”

A CsPbBr3 Perovskite Quantum Dot/Graphene Oxide Composite for Photocatalytic CO2 Reduction

“…Thus, far, many semiconductors (e.g., TiO 2 , CdS, C 3 N 4 , Cu 2 O, and perovskite oxides) have been reported for the light-driven photoreduction of CO 2 . − However, the search for a better candidate has not ceased. Recent and rapid developments in organic–inorganic halide perovskite materials have triggered great interest among researchers for their optoelectronic applications, especially in photovoltaic devices, because of the high extinction coefficients, wide absorption ranges, and long electron–hole diffusion lengths of these materials. − Remarkable photoelectric conversion efficiencies have been achieved for perovskite solar cells (PSCs) within just a few years of research (from 3.8% to 22.1%) .…”

Effect of Ca/Ti Ratio on the Core–Shell Structured CaTiO3@basalt Fiber for Effective Photoreduction of Carbon Dioxide

“…These were then vigorously stirred for 30 min. Next, these colloidal solutions were transferred into a titanium liner of 2.0 L capacity, and treated at 200°C for 6 h. These were then washed and dried at 80°C for 24 h. Finally, the powders with various Ca:Ti ratios were obtained after calcination at 900°C for 6 h. The coating method used for coating CaTiO 3 onto BF was the one referred to in Do et al CaTiO 3 (1:1)@BF, CaTiO 3 (1.5:1)@BF, and CaTiO 3 (2:1)@BF, prepared in this way were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis spectroscopy, photoluminescence (PL), photocurrent spectroscopy, and CO 2 ‐temperature programed desorption (CO 2 ‐TPD). The performance of CO 2 photo‐reduction was tested using two 6.0 W/cm 2 mercury lamps (365 nm).…”