Method for manufacturing bacterially induced crystal particle

A method for manufacturing bacterially induced crystal particles, comprising:

• culturing bacteria in a culture medium comprising a carbon source and a raw metal material, so that the bacteria induce the raw metal material to undergo a reduction-oxidation reaction, wherein the raw metal material comprises a transition metal, and a concentration of the raw metal material is in a range of 0.1 to 0.2 M;
• isolating a wet powder material from the culture medium;
• and
• drying the wet powder material to obtain a powder material, wherein the powder material comprises at least one bacterially induced crystal particle;
• wherein in the step of culturing the bacteria in the culture medium, the bacteria suffers a stress response, so that a cell wall or a cell membrane of the bacteria forms a composite shell of the bacterially induced crystal particle,
• when the bacterially induced crystal particle is spheric, the composite shell is formed by two dome-shaped portions, and a thickness of each of the dome-shaped portions is not less than 1/73 of a diameter of the bacterially induced crystal particle, or
• when the bacterially induced crystal particle is rod-shaped, the composite shell is formed by a cylindrical portion and the two dome-shaped portions connected to two ends of the cylindrical portion, the thickness of each of the dome-shaped portions is not less than 1/73 of a width of the bacterially induced crystal particle, and a thickness of the cylindrical portion is not less than 1/37 of the width of the bacterially induced crystal particle.