The photoelectrochemical (PEC) water splitting is hampered by strong bonds of H2O molecules and low ionic conductivity of pure water. The photocatalysts dispersed in pure water can serve as a water activation agent, which provides an alternative pathway to overcome such limitations. Here we report that the light illuminated α-Fe2O3/Pt nanoparticles may produce a reservoir of reactive intermedia...

Porque é que os estudos prisionais não explicam fenómenos notórios como a violência institucional nos lugares com mais segurança do mundo, muito diferente criminalização dos sexos e das classes sociais, as intenções declaradas incumpridas pelos estados de respeito direitos humanos? que, este respeito, dominam preconceitos ideológicos? As penas penitenciárias são modernos, par trabalho assalaria...

Sacrificial layer electrophoretic deposition (SLED) is a technique to assemble nanoparticles that yields free-standing, multilayered nanoparticle films with macroscopic lateral dimensions after the sacrificial layer is dissolved.

Photocatalysts In article number 2301576, Soojin Park, Jungki Ryu, and co-workers present earth-abundant non-toxic photocatalysts that can produce hydrogen reform biomass efficiently, utilizing solar energy. Si flakes modified with Ni-coordinated N-doped graphene quantum dots facilitate record-high productivity under simulated sunlight without any buffering agent sacrificial electron donors. Th...

Propylene oxide is a crucial feedstock in the plastic industry. The direct epoxidation of propylene using O2 considered among most promising means producing oxide. Here we report an integrated photo-electro-heterogeneous catalytic system for with O2. Bismuth vanadate (or TiO2) photocatalyst and Co-based electrocatalyst produces H2O2. A titanium silicalite-1 heterogeneous catalyst subsequently e...

A new family of Ir(III) complexes were synthesised and employed as light-induced hydrogen-production photosensitisers in aqueous systems, where hydrogen evolution was observed only when the PS* was reduced by the sacrificial agent, NEt3, signifying that a minimum potential difference of >0.2 V between E(PS*/PS(-)) and E(NEt3(+)/NEt3) is required for efficient hydrogen production [i.e., E(PS*/PS...

Ž . Ž Three-dimensional multistructure assemblies consisting of gold nanoparticles and a sulfur-containing ruthenium II tris 2,2-bi. pyridine derivative were fabricated on an ITO electrode by their alternate self-assembling. Absorption spectra of the assemblies showed immobilization of the gold surface and the ruthenium complex. Broadening and red shift of the plasmon band were observed by incr...