▎ 摘　　要

NOVELTY - X-ray radiation shielding material having a layered nanolaminate structure (nacre like) composed of assembled sheets of lead-free 2-dimensional (2D) materials with single or few atomic layers thickness and atomic number, is new. USE - The X-ray radiation shielding material is useful for Neutron radiation shielding nanolaminate structure of 2D materials, and ionizing (X-ray, γ , neutron) radiation shielding material (all claimed). ADVANTAGE - The X-ray radiation shielding material: provides layered nanolaminates containing assembled sheets of 2D materials with high atomic numbers, namely of transition metal dichalcogenides, group III and IV chalcogenides and chalcogenides, which have high radiation shielding properties due to the density of their nucleus; and is lightweight, nontoxic, cost-effective, sustainable and comply with international and national radiation safety standards. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for ionizing (X-ray, γ , neutron) radiation shielding material comprising layered nanolaminate structures (nacre like) composed of assembled sheets of lead-free 2D materials with single or few atomic layers thickness and atomic number.