Molecular hydrogen production by radiolysis of water on the surface of nano-ZrO2 under the influence of gamma rays

Abstract

In this research, the radiation-heterogeneous processes of water decomposition on the surface of zirconium dioxide nanoparticles (n-ZrO2) were studied. The kinetics of buildup of molecular hydrogen during the radiolytic processes of water decomposition was also examined. The production of H2 and H2O2 through water radiolysis was investigated to develop a computational model and disclose the kinetic behavior of water radiolysis. The enthalpy of ZrO2 nanoparticles was studied at the temperature range T=1200-2900 K, in which ZrO2 nanoparticles has a two-phase transition. Some of the electrons were transported to the surface of the nanoparticles during the physical and physicochemical stages of the process and emitted into the water. At the same time, the migration of energy carriers in radioactively active oxide compounds changed at different intervals depending on the composition, structural stability, and electro-physical properties of the oxides.

Study of Radiation Resistance of WO3 Microparticles under Irradiation with Heavy Kr15+ and Xe22+ Ions

“…In fact, under irradiation with heavy ions, the main role in the deformation processes and consequences associated with radiation damage is played by the effects associated with the formation of vacancies and interstices, as well as their accumulation and agglomeration with an increase in the fluence or ion energy. At the same time, at low irradiation fluences, most of the resulting radiation defects annihilate, which does not lead to significant structural changes, as evidenced by a number of works [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. In the case of irradiation fluences above 10 12 ion/cm 2 , a stage of radiation damage accumulation is observed due to the effect of overlapping areas of radiation damage occurring along the trajectory of ions in the material, which leads to the formation of cluster defects that can significantly affect the change in the structural and strength properties of the irradiated material.…”

“…Moreover, the radiation damage accumulation can lead to the so-called gas swelling process due to the formation of pores and their subsequent filling with implanted ions. Such swelling can lead to destabilization of the inert matrix and its partial destruction, which will adversely affect the entire system [ 13 , 14 , 15 ].…”

New strategies in the preparation of binary g-C3N4/MXene composites for visible-light-driven photocatalytic applications

“…The replacement of traditional fossil fuels with alternative energy sources that have characteristics of eco-friendly and cleanliness, has received attention in recent years. Besides the radiolysis of water [103], photocatalytic production of hydrogen through water splitting can be a practical way to produce renewable energy without carbon dioxide emissions [104]. Among various composites, MXene/g-C 3 N 4 has a significant potential to produce H 2 via photosplitting of water [105,106].…”

Investigation on Process of the Water Radiolysis in the Nano Si+H2O System Under the Influence of Gamma – Quanta

“…Power of the absorbed dose has been determined by ferro sulfate and methane ways. In the concrete studied object the power of the absorbed dose has been calculated with use of a method of comparison of electronic density [10][11][12][13][14][15][16][17][18][19]. The products received by radiation and heterogeneous processes, such as H 2 , O 2 and H 2 O 2 have been determined by a chromatography method.…”