It is a great challenge to develop efficient artificial photosynthesis systems by mimicking natural photosynthesis. In this present work, an organo-inorganic hybrid photoanode was fabricated by depositing ultrathin NiFe MOF nanolayers and molecular cobaloxime cocatalyst on the surface of Ti-doped porous hematite (Ti-PH). This hybrid photoanode exhibited a high photocurrent density of 2.45 mA/cm 2 at 1.23 V vs the reversible hydrogen electrode (RHE) under AM 1.5 G illumination with excellent stability. Moreover, the optimal incident photon-to-current efficiency (IPCE) of the hybrid photoanode reached 83.0% at 365 nm and the surface charge injection efficiency (η inj ) was improved to 87.5% at 1.23 V vs RHE. Detailed investigations reveal that NiFe MOFs can effectively facilitate charge separation as a hole-transport layer and molecular cobaloxime cocatalyst can passivate surface trap states to increase water oxidation kinetics.

Photoelectrocatalytic degradation performance of hexachlorobenzene (HCB) was assessed with a newly designed continuous photocatalytic reactor. CdS/TiO2 NTs were successfully prepared by depositing CdS particles on the surface of TiO2 nanotube arrays.The morphology, phase structure and photoelectric properties of CdS/TiO2 NTs were characterized by field emission scanning electron microscope, X-ray diffraction and diffuse reflectance spectroscopy. The photoelectrocatalytic activity of CdS/TiO2 NTs was evaluated in degradation of HCB in aqueous solution. The experimental results show that CdS/TiO2 NTs exhibited higher photoabsorption rate under visible light, bigger photocurrent (value) and improved photocatalytic activity than TiO2 NTs.

We provide an overview of the recent progresses on the system architecture design and performance prediction for microwave signal detection under weak signal intensity regime, up to quantumized level. The technique roadmap includes two perspectives, the opto-electro-mechanical (OEM) and superconducting devices. For the former one, we first overview the concept of OEM, and then introduce the signal detection based on capacitive-opto-electro-mechanical systems and piezoopto-electro-mechanical systems. For the latter one, we first overview the concept and architecture of Josephson junction, and then introduce the signal detection based on superconducting Hanbury Brown-Twiss (HBT) experiments and Λ energy-level splitting system. Besides, we review the microwave detection based on Rydberg atom system. We believe that this overview can provide a guidance for future transmission limit, signal processing, detection device fabrication and real experiments.