Kwon Oh Oun, Kim Eui Jin, Lee Jae Hyeok, Kim Tae Young, Park Kyung Hee, Kim Sang Yook, Suh Hwa Jin, Lee Hyo Jung, Lee Jae Wook
Gyeongbuk Natural Color Industry Institute, Yeongcheon 770-060, Republic of Korea.
Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 5;136 Pt C:1460-6. doi: 10.1016/j.saa.2014.10.037. Epub 2014 Oct 31.
To improve the photovoltaic conversion efficiency in dye-sensitized solar cells (DSSCs), TiO2 electrode adsorbed with gardenia yellow purified by nonionic polymeric sorbent was successfully formulated on nanoporous TiO2 surface. Adsorption and desorption properties of crude gardenia yellow solution on a macroporous resin, XAD-1600, were investigated to purify gardenia yellow because of its strong adsorption and desorption abilities as well as high selectivity. To this end, adsorption equilibrium and kinetic data were measured and fitted using adsorption isotherms and kinetic models. Adsorption and desorption breakthrough curves in a column packed with XAD-1600 resin was obtained to optimize the separation process of gardenia yellow. The photovoltaic performance of the photo-electrode adsorbed with the crude and purified gardenia yellow in DSSCs was compared from current-voltage measurements. The results showed that the photovoltaic conversion efficiency was highly dependent on how to separate and purify gardenia yellow as a photosensitizer.
为提高染料敏化太阳能电池（DSSC）的光电转换效率，在纳米多孔TiO₂表面成功制备了负载有经非离子型聚合物吸附剂纯化的栀子黄的TiO₂电极。由于大孔树脂XAD - 1600具有较强的吸附和解吸能力以及高选择性，研究了其对栀子黄粗溶液的吸附和解吸性能以纯化栀子黄。为此，使用吸附等温线和动力学模型对吸附平衡和动力学数据进行了测量和拟合。获得了填充XAD - 1600树脂的柱中的吸附和解吸突破曲线，以优化栀子黄的分离过程。通过电流 - 电压测量比较了DSSC中吸附有粗栀子黄和纯化栀子黄的光电极的光伏性能。结果表明，光电转换效率高度依赖于作为光敏剂的栀子黄的分离和纯化方式。
