PROBLEM TO BE SOLVED: To provide a blood purification material which uses titanium oxide with photocatalyst activity suppressed even under irradiation with visible rays though the titanium oxide has a large number of stable oxygen defects, and is excellent in adsorption and elimination ability of toxic substances contained in blood and the like, while it eliminates useful substances contained in the blood and the like as small as possible, and is reduced in dusting properties, and a module for blood purification using the blood purification material.SOLUTION: The module for blood purification is formed using a titanium oxide porous particle for blood purification comprising the titanium oxide, in which when the titanium oxide porous particle is measured by an electron spin resonance measurement at a temperature of 10 K, a signal at a value of around 1.96 is present, the signal being divided into two signals representing a component g1 parallel to the axis of symmetry and a component g2 vertical to the axis of symmetry, and a signal at a value of from 2.003 to 2.004 is not substantially present.COPYRIGHT: (C)2012,JPO&INPIT【課題】安定した酸素欠陥を多数有するものの、可視光照射下でも光触媒活性が抑制された酸化チタンを用いて、血液等に含まれる有害物質の吸着除去能に優れる一方、前記血液等に含まれる有用物質をできる限り除去することがなく、かつ、発塵性が低減され、血液浄化材及びそれを用いた血液浄化用モジュールを提供する。【解決手段】電子スピン共鳴測定により温度10Kで測定した場合に、1.96付近を示すシグナルが存在し、このシグナルは対称軸に平行な成分g1と垂直な成分g2を示す2つのシグナルに分かれており、かつ、2.003~2.004のシグナルが実質的に存在しない酸化チタンからなる血液浄化用酸化チタン多孔質粒子を用いて、血液浄化用モジュールを構成する。【選択図】なし
