用于便携式生物传感器的沉积在泡沫石墨烯上的板钛矿型二氧化钛的光电化学性能
Photoelectrochemical Performance of Brookite Titanium Dioxide Electrodeposited on Graphene Foam for Portable Biosensors.
作者信息
Bott-Neto José L, Martins Thiago S, Pimentel Gabriel J C, Oliveira Osvaldo N, Marken Frank
机构信息
São Carlos Institute of Physics, University of São Paulo, São Carlos, São Paulo 13560-970, Brazil.
Department of Chemistry, University of Bath, Claverton Down, Bath, England BA2 7AY, U.K.
出版信息
ACS Omega. 2024 Dec 16;9(52):51474-51480. doi: 10.1021/acsomega.4c08624. eCollection 2024 Dec 31.
We discuss the photoelectroanalytical performance of a brookite-phase titanium dioxide (TiO) platform electrodeposited onto graphene foam (GF) at low temperatures. The scalable electrosynthesis process eliminates the need for thermal annealing, which is impractical for carbon-based electrodes. Films resulting from a 10 min electrodeposition (TiO-10/GF) exhibit enhanced photocurrents, reaching 170 μA cm -twice the value for TiO films on traditional screen-printed carbon electrodes (82 μA cm ). The increased photocurrent density makes TiO-10/GF ideal for on-site photoelectrochemical biosensors as it allows for the use of compact systems with low-power LEDs.
我们讨论了在低温下电沉积在泡沫石墨烯（GF）上的板钛矿相二氧化钛（TiO₂）平台的光电分析性能。这种可扩展的电合成工艺无需热退火，而热退火对于碳基电极来说是不切实际的。经过10分钟电沉积得到的薄膜（TiO₂-10/GF）表现出增强的光电流，达到170 μA/cm²，是传统丝网印刷碳电极上TiO₂薄膜光电流值（82 μA/cm²）的两倍。光电流密度的增加使TiO₂-10/GF成为现场光电化学生物传感器的理想选择，因为它允许使用带有低功率发光二极管的紧凑型系统。
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