One-step microbial cultivated bacterial cellulose membrane with 1D/2D nanochannels for efficient osmotic energy conversion

被引：0
作者：
Song, Jiale [1 ]
Zhang, Ying [1 ]
Sheng, Nan [2 ,3 ]
Han, Zhiliang [1 ]
Qu, Xiangyang [1 ]
Zhou, Zhou [1 ]
Lv, Xiangguo [4 ]
Chen, Shiyan [1 ]
Wang, Huaping [1 ]
机构：
[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Adv Fiber Mat, Shanghai 201620, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China
[3] Shanghai Shipbldg Technol Res Inst, Shanghai 200032, Peoples R China
[4] Shanghai Jiao Tong Univ, Renji Hosp, Sch Med, Dept Urol, Shanghai 200127, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2025年 / 306卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
In situ culture; Bacteria cellulose; Composite nanochannels; Ion selectivity; Osmotic energy conversion; ELECTRODE; STATE; WATER;
D O I：
10.1016/j.ijbiomac.2025.141655
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Osmotic energy conversion based on bio-inspired layered membranes has garnered significant interest. However, traditional biomass ion-selective membranes suffer from complex preparation, uneconomic nature, poor selectivity, and low power density. Here, we introduce scalable one-step in situ culture for nanofluidic membrane materials (GO/C-BC) composed of graphene oxide (GO), carboxymethyl cellulose sodium salt (CMC), and bacterial cellulose (BC). This preparation method effectively combines 1D and 2D nanochannels, reduces membrane resistance, and increases power density. The GO1.5/C-BC membrane exhibits excellent cation selectivity (0.89), achieving energy conversion efficiency of 31.40 % and delivering a power density of 7.49 W m- 2 under a 500fold concentration gradient. Stability tests under artificial seawater and river water conditions show only a 4.44 % decrease in power density after 20 d, highlighting its excellent stability and durability. Moreover, by connecting 28 power units in series, the membrane can produce a voltage output of -4 V. This scalable and environmentally friendly biomass material presents new avenues for osmotic energy conversion.
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页数：10
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