Rational designing 0D/1D Z-scheme heterojunction on CdS nanorods for efficient visible-light-driven photocatalytic H2 evolution
TL;DR: In this paper, a 0D/1D direct Z-scheme heterojunction photocatalyst synthesized by in-situ anchoring W18O49 QDs onto the surface of CdS NRs was reported.
About: This article is published in Chemical Engineering Journal.The article was published on 2021-05-15. It has received 47 citations till now.
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TL;DR: In this paper, a direct Z-scheme three-dimensional MgIn2S4 nanoflowers/two-dimensional oxygen-doped g-C3N4 nanosheets heterostructured composite photocatalysts were fabricated for Cr(VI) photoreduction.
57 citations
TL;DR: In this paper , a 3D hierarchical nanocages photocatalyst based on metal sulfide semiconductor (CuS) nanosheets-assembled hollow cubic cages was presented.
51 citations
TL;DR: Z-scheme photocatalysts have recently received tremendous attention because of their extraordinary light harvesting and utilization ability, spatially-separated reductive and oxidative active sites, and strong redox capacity as mentioned in this paper .
34 citations
01 Jan 2022
TL;DR: The construction of a tandem S-scheme heterojunction forms a built-in electric field at the interface between the catalysts and increases the photocatalytic reduction potential as mentioned in this paper .
Abstract: The construction of a tandem S-scheme heterojunction forms a built-in electric field at the interface between the catalysts and increases the photocatalytic reduction potential.
33 citations
TL;DR: Recently, various heavily doped semiconductors have emerged as potential alternatives to costly noble metals for efficient photocatalysis due to their strong localized surface plasmon resonance (LSPR) property in visible-near infrared region as mentioned in this paper.
30 citations
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TL;DR: This Perspective provides a snapshot of the current energy landscape and discusses several research and development opportunities and pathways that could lead to a prosperous, sustainable and secure energy future for the world.
Abstract: Access to clean, affordable and reliable energy has been a cornerstone of the world's increasing prosperity and economic growth since the beginning of the industrial revolution. Our use of energy in the twenty–first century must also be sustainable. Solar and water–based energy generation, and engineering of microbes to produce biofuels are a few examples of the alternatives. This Perspective puts these opportunities into a larger context by relating them to a number of aspects in the transportation and electricity generation sectors. It also provides a snapshot of the current energy landscape and discusses several research and development opportunities and pathways that could lead to a prosperous, sustainable and secure energy future for the world.
7,721 citations
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.
Abstract: The use of solar energy to produce molecular hydrogen and oxygen (H2 and O2) from overall water splitting is a promising means of renewable energy storage. In the past 40 years, various inorganic and organic systems have been developed as photocatalysts for water splitting driven by visible light. These photocatalysts, however, still suffer from low quantum efficiency and/or poor stability. We report the design and fabrication of a metal-free carbon nanodot-carbon nitride (C3N4) nanocomposite and demonstrate its impressive performance for photocatalytic solar water splitting. We measured quantum efficiencies of 16% for wavelength λ = 420 ± 20 nanometers, 6.29% for λ = 580 ± 15 nanometers, and 4.42% for λ = 600 ± 10 nanometers, and determined an overall solar energy conversion efficiency of 2.0%. The catalyst comprises low-cost, Earth-abundant, environmentally friendly materials and shows excellent stability.
3,553 citations
TL;DR: In this article, a review summarizes the basics of overall water splitting via both one-step excitation and Z-scheme processes, with a focus on standard methods of determining photocatalytic performance.
Abstract: Overall water splitting based on particulate photocatalysts is an easily constructed and cost-effective technology for the conversion of abundant solar energy into clean and renewable hydrogen energy on a large scale. This promising technology can be achieved in a one-step excitation system using a single photocatalyst or via a Z-scheme process based on a pair of photocatalysts. Ideally, such photocatalysis will proceed with charge separation and transport unaffected by recombination and trapping, and surface catalytic processes will not involve undesirable reactions. This review summarizes the basics of overall water splitting via both one-step excitation and Z-scheme processes, with a focus on standard methods of determining photocatalytic performance. Various surface engineering strategies applied to photocatalysts, such as cocatalyst loading, surface morphology control, surface modification and surface phase junctions, have been developed to allow efficient one-step excitation overall water splitting. In addition, numerous visible-light-responsive photocatalysts have been successfully utilized as H2-evolution or O2-evolution photocatalysts in Z-scheme overall water splitting. Prototype particulate immobilization systems with photocatalytic performances comparable to or drastically higher than those of particle suspension systems suggest the exciting possibility of the large-scale production of low-cost renewable solar hydrogen.
1,460 citations
1,107 citations
TL;DR: It is shown that a tailor-made, photoreduced graphene oxide can shuttle photogenerated electrons from an O(2)-evolving photocatalyst (BiVO(4) to a H(2)/Ru/SrTiO(3):Rh, tripling the consumption of electron-hole pairs in the water splitting reaction under visible-light irradiation.
Abstract: The effectiveness of reduced graphene oxide as a solid electron mediator for water splitting in the Z-scheme photocatalysis system is demonstrated. We show that a tailor-made, photoreduced graphene oxide can shuttle photogenerated electrons from an O2-evolving photocatalyst (BiVO4) to a H2-evolving photocatalyst (Ru/SrTiO3:Rh), tripling the consumption of electron–hole pairs in the water splitting reaction under visible-light irradiation.
906 citations