Nanosized　hierarchical　pure　Si-Beta　zeolite　was　prepared　by　the　solvent-free　method.　With　the　assistance　of　1%　seeds　and　low　organic　template　content　(TEAOH/SiO2　=　0.06),　pure　Si-Beta　zeolite　is　well　crystallized　within　16　h,　neither　fluoride　mineralizing　agent　nor　mesoporogen　agent.　Here　we　comprehensively　investigated　the　physicochemical　properties　of　the　resulting　samples,　including　X-ray　diffraction,　scanning　electron　microscopy,　nitrogen　adsorption-desorption,　water　adsorption,　Fourier　transform　infrared　and　thermogravimetric　analyses　(TGA).　These　characterization　results　suggest　that　the　silicon　sources　would　influence　the　crystal　size,　but　all　samples　possessed　high　surface　area　(509–647　m2　g−1),　pore　volume　(0.40–0.71　cm3　g−1),　and　superior　hydrophobicity.　©　2022　Elsevier　Inc.