MXENE-lignin composite and power-free chemical sensor including the same as an active layer
AssigneeIndustry-Academic Cooperation Foundation Gyeongsang National University
InventorJun Hong Park
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Abstract
A MXene-lignin composite and a power-free chemical sensor including the same as an active layer according to a preferred embodiment include a MXene sheet represented by Mn+1XnTx (n=1, 2, or 3) and lignin forming a chemical bond to the MXene sheet as an active layer, thereby enabling the detection of a current change amount at the nanoampere (nA) level without a power supply and easily implementing a chemical sensor with high chemical sensitivity exhibiting a fast response rate and recovery rate.
Claims6
A MXene-lignin composite comprising:
- a MXene sheet represented by Mn+1XnTx (n=1, 2, or 3);
- and
- lignin forming a chemical bond to the MXene sheet,
- wherein M is Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, or two or more transition metals thereof, X is C, N, or a combination thereof, Tx is F, OH, or O, and
- the MXene-lignin composite includes a crystalline region at the MXene sheet and an amorphous region at the lignin, due to hybridization through a chemical bond (M—OH) between the transition metal (M) of the MXene sheet and the hydroxyl group (—OH) functional group included in the lignin.
A power-free chemical sensor including a MXene-lignin composite, the power-free chemical sensor comprising:
- a substrate;
- a MXene-lignin composite film provided on the substrate and including an MXene sheet represented by represented by Mn+1XnTx (n=1, 2, or 3) and lignin forming a chemical bond to the MXene sheet;
- and
- at least one metal electrode formed on at least a part of the MXene-lignin composite film,
- where M is Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, or two or more transition metals thereof, X is C, N, or a combination thereof, Tx is F, OH, or O, and
- the MXene-lignin composite film includes a crystalline region by the MXene sheet and an amorphous region by the lignin, due to hybridization through a chemical bond (M—OH) between the transition metal (M) of the MXene sheet and the hydroxyl group (—OH) functional group included in the lignin.
Dependencies are inferred from the claim text.