He Yiming, Zhang Jian, Rong Jian, Mei Jinfeng, Liang Qian, Li Zhongyu
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China.
School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, P. R. China.
Inorg Chem. 2023 May 1;62(17):6833-6842. doi: 10.1021/acs.inorgchem.3c00605. Epub 2023 Apr 17.
Solar-driven hydrogen (H) generation from seawater exhibits great economic value in addressing the urgent energy shortage yet faces challenges from the severe salt-deactivation effect, which could result in the consumption of photoinduced charges and decomposition of catalysts. Herein, a triptycene-based polymer was coated on the surface of a CdZnS nanorod to form a core-shell heterojunction (TCP@CZS) by using the Suzuki reaction for photocatalytic H production from water/seawater splitting. The introduction of TCP can provide a large surface area, enrich the active site, and boost charge transfer for the proton reduction reaction. Benefiting from it, optimal TCP@CZS indicated a H evolution rate of 93.88 mmol h g with NaS/NaSO in natural seawater under simulated solar light irradiation, which was 2.2 and 1.1 times higher than that of pure CdZnS and that in pure water, respectively. Besides, the apparent quantum efficiency (AQE) of TCP@CZS-3 under 420 nm light irradiation was 22.6% in seawater. This work highlights the feasibility of the triptycene-based porous organic polymer as an efficient catalyst for solar energy conversion in seawater.
利用太阳能从海水中制氢在解决紧迫的能源短缺问题方面具有巨大的经济价值，但面临着严重的盐失活效应带来的挑战，这种效应可能导致光生电荷的消耗和催化剂的分解。在此，通过铃木反应在CdZnS纳米棒表面包覆了一种基于三蝶烯的聚合物，形成核壳异质结（TCP@CZS），用于水/海水分解光催化产氢。TCP的引入可以提供较大的表面积，富集活性位点，并促进质子还原反应的电荷转移。受益于此，优化后的TCP@CZS在模拟太阳光照射下，在天然海水中以NaS/NaSO为牺牲剂时的析氢速率为93.88 mmol h g，分别是纯CdZnS和纯水中析氢速率的2.2倍和1.1倍。此外，TCP@CZS-3在420 nm光照下在海水中的表观量子效率（AQE）为22.6%。这项工作突出了基于三蝶烯的多孔有机聚合物作为海水中太阳能转换高效催化剂的可行性。
