CO₂ photoreduction to CO/CH₄ over Bi₂W_0.5Mo_0.5O₆ solid solution nanotubes under visible light

Abstract

In this work, Bi2W0.5Mo0.5O6 solid solution nanotubes have been synthesized through a structure-directing hard template approach, which demonstrated greatly enhanced CO2 photoreduction to CO/CH4.

Template-Free Synthesis of One-Dimensional g-C3N4 Chain Nanostructures for Efficient Photocatalytic Hydrogen Evolution

“…The UV-vis diffuse reflectance spectroscopy illustrated by Figure 3 . from the (αhv)1/2 vs. photon energy (hv) plot ( Hou et al, 2020 ; Li et al, 2020d ; Wang et al, 2020a ; Zhang et al, 2020a ; Zhang Y. et al, 2020 ), the optical bandgap of chain g-C 3 N 4 and bulk g-C 3 N 4 was calculated to be approximate 2.88 and 2.93 eV, respectively. When the particle size descends to a certain value, the electron energy level near the Fermi energy level of the metal changes from quasi-continuous to discrete energy level ( Miao et al, 2019 ; Huang et al, 2020b ; Wu et al, 2020 ; Zhang S. et al, 2020 ), and the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital energy level (LUMO) of the nano-semiconductor particles have discontinuous energy gap, which leads to the blue shift of the chain g-C 3 N 4 .…”

Multifunctional WO3/NiCo2O4 heterojunction with extensively exposed bimetallic Ni/Co redox reaction sites for efficient photoelectrochemical water splitting

“…As we know, the photocurrent can be calculated as follows [Eq. (4)]: [25] J H 2 O ¼ J abs � h sep � h inj (4) where J abs notes the photo absorption rate expressed as photocurrent density. When the holes transferred from the WO 3 /NiCo 2 O 4 p-n heterojunction surface to the electrolyte are completely consumed by Na 2 SO 3 , h inj is recorded as 1.…”

“…The development of clean energy is of far-reaching significance to alleviate the energy and environmental crisis caused by the application of traditional energy in the world and other human activities. [1][2][3][4][5][6][7] Among the many alternative clean energy sources for fossil energy, hydrogen energy has excellent application prospects due to the advantages of rich reserves, high heating value and pollution-free. [8,9] Photoelectrochemical (PEC) water splitting is a promising method for converting endless solar energy into available hydrogen energy in an environmentally friendly way.…”

Facile Synthesis of Nanoporous Amorphous Silica on Silicon Substrate

“…Silica materials exhibit unique physical, mechanical, and chemical properties that make them attractive, for example, for heterogeneous catalysis [1][2][3], drug delivery [4], and composites [5]. Amorphous silica networks [6,7] have a high surface area, low density [6], good dispersity, and unique morphology which could be widely used in the application of gas and liquid separation [8] and catalysis carrier [9].…”

“…And the sol-gel process uses high-cost precursors such as tetraethoxysilane (TEOS) and the drying of the gels, which is hard to get large-scale production [13]. A simple method to produce pure porous silica is essential for a number of applications [2,17,18].…”