Ammonia photosynthesis under ambient conditions using an efficient nanostructured FeS2/CNT solar-energy-material with water feedstock and nitrogen gas

CO2 conversion into methanol under ambient conditions using efficient nanocomposite photocatalyst/solar-energy materials in aqueous medium

“…5. The redox reactions occurring during the water-splitting process are proton reduction (eqn (4)) and hydroxide oxidation (eqn (5)), and the overall process is splitting of H 2 O molecules: 17,38 (4)…”

“…Open circuit potential (OCP), transient photocurrent and impedance measurements of the photocatalyst powders were conducted in a conventional 3-electrode glass cell using an Ivium-Vertex Potentio-Galvanostat instrument (electrolyte: a 0.5 M NaHCO 3 solution, light source: a 10 W blue LED with l ¼ 434 nm). 7,17 In these tests, a platinum foil (2.5 cm 2 ) and saturated calomel (SCE) were employed as counter and reference electrodes, respectively. The working electrodes (WEs) were also fabricated through a Dr Blade approach 27 by mixing 20 mg photocatalyst, 3 drops Triton X-100 (surfactant, serving as binder) and 0.25 ml DW, and coating the resulting paste on the conductive side of a 1 Â 1 cm 2 uorine doped tin oxide (FTO) glass (SOLARONIX, electrical resistance: 10 U sq À1 ).…”

“…During the test, the photocatalyst particles were continuously dispersed using a magnetic stirrer, and the bubbling of CO 2 gas into the reaction medium continued in a smooth ow ($40 ml min À1 ). A sun simulated light (xenon irradiation, 100 mW cm À2 ) 17 was employed and the tests were terminated aer 2 h illumination of the reactor (according to our previous reports, the illumination at longer periods is not recommended for the studies of liquid-phase products, because by accumulating the product in the reaction medium, it can undergo further reaction/degradation and becomes consequently consumed 7,9 ).…”

“…9,15,16 Furthermore, it is worth noting that CNT has the capacity of hydrogen storage. 17 Therefore, on the resulting CNT/NiO composite material, the hydrogenation of CO 2 could occur effectively, and an appreciable amount of methanol is anticipated to be produced upon this binary nanocomposite photocatalyst.…”

Nanocrystalline Pyrite for Photovoltaic Applications

“… Photovoltaics: mesoporous silica (MS)@CuO@FeS 2 , P3HT:PCBM:FeS 2 , FeS 2 /graphene, FeS 2 nanotube arrays on ZnO nanotube arrays Optoelectronics : FeS 2 NCs/graphene Magnetoelectronics: CoS 2 /FeS 2 , FeS 2 /FeSe x Hydrogen production: FeS 2 /anatase TiO 2 & Hydrogen storage: MgH 2 –FeS 2 Lithium ion batteries (LIBs): FeS 2 /CNT, FeS 2 @Carbon fibre, FeS 2 /RGO, FeS 2 /N−G composite, FeS 2 /carbon shells on cobalt nanowires, pitaya‐structured FeS 2 @C Sodium ion batteries (SIBs): FeS 2 nanosheet@Fe 2 O 3, Na/FeS 2 , FeS 2 /rGO−A (reduced graphene oxide aerogel), lychee‐like FeS 2 @FeSe 2 core‐shell microspheres, FeS 2 @C yolk–shell nanoboxes, FeS 2 /CNT Supercapacitors: FeS 2 /graphene, FeS 2 /C Environmental remediation: Au@FeS 2 , FeS 2 QDs/SiO 2 ‐chitosan or polypyrrole Hydrogenation: TiO 2 /FeS 2 , FeS 2 /CNT …”