High-efficient and Low-cost H2 Production by Solar-driven Photo-thermo-reforming of Methanol with CuO Catalyst

Abstract

Solar-driven methanol reforming is recognized as an effective route for hydrogen production considering economic and technological feasibility. However, the currently-available photo-reforming and thermo-reforming suffer from low efficiency and high-cost, respectively. Here, we propose a high-efficient and low-cost reaction system for H2 production by solardriven photo-thermo-reforming of methanol to solve this problem with noble-metal-free catalyst of CuO supported on SiO2 filter. In this system, CuO exhibits excellent hydrogen production performance (100.33 mmol g -1 h -1 ), and the solar-tohydrogen efficiency can reach up to 1.85% with 100 mg commercial CuO catalyst. The remarkable performance is attributed to the photo-thermo-catalytic synergism, which is revealed as a self-promoting cycle triggered by in-situ photo reduction of CuO into element Cu and enhanced by the thermally Local Surface Plasmon Resonance (LSPR) effect of element Cu. We hope our work could bring forward to an alternative novel idea for solar-driven H2 harvesting in the future.

Nickel–cobalt oxalate as an efficient non-precious electrocatalyst for an improved alkaline oxygen evolution reaction

“…The preparative technique was optimised in terms of Ni/Co ratio, oxalic acid amount, temperature and processing time. The overpotential requirement for the block-like Ni 2.5 Co 5 C 2 O 4 was found to be 330 mV for benchmark 10 mA/cm 2 geo . The improved performance of the catalyst was further verified by low charge transfer resistance, long term stability and 87% faradic efficiency.…”

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Recent advances in efficient emissive materials-based OLED applications: a review

“…Photocatalysis and electrocatalyst devices resolved the environmental problem that converts solar energy to chemical energy [10,20]. Metal oxide such as titanium oxide (TiO 2 ), copper oxide (CuO) [21], metal sulfide such as zinc sulfide (ZnS), and metal-metal oxide tri-composite like silver/titanium dioxide/ reduced graphene oxide (Ag/TiO 2 /rGO) [22] are the active photocatalytic materials. Polymeric nanocomposite (like graphitic carbon nitride/zirconium dioxide) [23] materials revealed good photocatalytic properties [24].…”

Enhanced Electrochemical Oxygen Evolution Reaction on Hydrogen Embrittled CoSe Surface

“…In an electrochemical and photo‐electrochemical water splitting reaction [ 1–7 ] for hydrogen production, [ 2,8–13 ] improving a non‐noble metal catalyst's stability and durability through various strategies such as utilizing single‐atom catalyst, atomic thin layer formation, and coating method is an attractive field. [ 14 ] The anodic oxygen evolution reaction (OER) catalyst activity and stability are not appreciable in water splitting reactors than the cathodic hydrogen evolution reaction (HER), specifically using the non‐noble metal‐based catalysts such as Co and Ni‐based materials.…”