دورية
أعرض في EDS

Efficient bipolar membranes with Ti3C2Txnanosheets as advanced catalysts in the interfacial layers for water splitting

التفاصيل البيبلوغرافية
العنوان: Efficient bipolar membranes with Ti3C2Txnanosheets as advanced catalysts in the interfacial layers for water splitting
المؤلفون: Zhang, Xu, Li, Yanan, Yuan, Yuting, Wu, Cuiming, Wang, Xiaolin, Liu, Yahua, Han, Xiaozhao
المصدر: Chemical Engineering Research and Design; May 2024, Vol. 205 Issue: 1 p39-46, 8p
مستخلص: The main key component in bipolar membranes (BPMs) is the interfacial layer (IL), which is responsible for the water splitting. In this work, a most studied MXene Ti3C2Txand a modified Ti3C2Tx(PANI-Ti3C2Tx) were investigated as the catalysts in ILs of BPMs. BPMs with Ti3C2Tx/PANI-Ti3C2Txwere prepared through the layer-by-layer casting/spraying method. The resulting BPMs were assessed through morphologies, thermal stability, alkali resistance performance, current-voltage (I-V) curves and water splitting performance in the bipolar membrane electrodialysis (BMED). Results show that the as-prepared BPMs exhibited excellent adhesion between layers, good thermal stability and alkali resistance performance. I-V curves showed that the voltage of the BPM with the PANI-Ti3C2Txaddition content of 0.5% (BPM-PANI-Ti3C2Tx-0.5%, ∼7.0 V) at the current density of 80 mA·cm−2was only half of that of the blank sample BPM-0 without any catalysts (∼14.1 V). After the BMED operation, the final OH-concentration increment in the base chamber (∆COH) and the energy consumption of the BPM-Ti3C2Tx-1.0% membrane (0.089 mol·L−1, 0.58 kWh·mol−1) were ∼7% higher and ∼29% lower than those of BPM-0 (0.083 mol·L−1, 0.82 kWh·mol−1), respectively; BPM-Ti3C2Tx-1.0% (0.089 mol·L−1, 95%) showed a higher final ∆COHand current efficiency than the commercial membrane BP-1 (0.087 mol·L−1, 93%), but a higher energy consumption (0.58 kWh·mol−1) than BP-1 (0.33 kWh·mol−1). This study suggests that MXenes have the advanced catalytic effect on water splitting occurs in ILs of BPMs.
قاعدة البيانات: Supplemental Index
الوصف
تدمد:02638762
17443563
DOI:10.1016/j.cherd.2024.03.016