Construction of Infrared‐Light‐Responsive Photoinduced Carriers Driver for Enhanced Photocatalytic Hydrogen Evolution

Abstract

Infrared light, more than 50% of the solar light energy, is long‐termly ignored in the photocatalysis field due to its low photon energy. Herein, infrared‐light‐responsive photoinduced carriers driver is first constructed taking advantage of pyroelectric effect for enhancing photocatalytic hydrogen evolution. In order to give full play to its role, the photocatalytic reaction is localized on the surface and interface of the composite based on a new semi‐immersion type heat collected photocatalytic microfiber system. The system is consisted of distinctive pyroelectric substrate poly(vinylidene fluoride‐co‐hexafluropropylene (PVDF‐HFP), typical photothermal material carbon nanotube (CNT), and representative photocatalyst CdS. The transient photocurrent, electrochemical impedance spectroscopy, time‐resolved photoluminescence and pyroelectric potential characterizations indicate that the infrared‐light‐responsive carriers driver significantly promotes the photogenerated charge separation, accelerates carrier migration, and prolongs carrier lifetime. The photocatalytic hydrogen evolution efficiency is remarkably improved more than five times with the highest average apparent quantum yield of 16.9%. It may open up new horizons to photocatalytic technology for the more efficient use of infrared light.

Fabrication of CdS Frame‐in‐Cage Particles for Efficient Photocatalytic Hydrogen Generation under Visible‐Light Irradiation

“…XRD pattern of the sample shows diffraction peaks at 2θ of 26.5 o , 44.1 o , and 51.9 o , confirming the formation of CdS (Figure S3a, Supporting Information). [ 31 ] As shown in the EDX spectrum (Figure S3b, Supporting Information), only Cd and S elements exist in the sample with the atomic ratio of approximately 1:1. FESEM images reveal that the obtained sample possesses a cubic morphology with convex surfaces ( Figure a,b).…”

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

“…Therefore, finding an alternative energy source is of great significance for the long-term development of human society. Hydrogen (H 2 ) has long been considered as an excellent candidate to substitute the fossil fuel, due to its advantages of clean, renewable, high energy density, and transportability [1][2][3] . However, at present, the low efficiency, high energy consumption, and environmentally hazardous H 2 production technology seriously restrict the commercial application of hydrogen energy.…”

Rare‐Earth‐Based Metal–Organic Frameworks as Multifunctional Platforms for Catalytic Conversion

“…Recently, both inorganic and organic materials have been reported for photocatalytic applications such as water reduction, water oxidation, and CO 2 reduction. [74][75][76][77] Currently, MOFs have been developed as new types of photocatalysts. The structure of MOFs facilitates them to be readily immobilized with photocatalytic active sites.…”