Photo-stable, 1D-nanofilaments TiO2-based lepidocrocite for photocatalytic hydrogen production in water-methanol mixtures
Photo-stable, 1D-nanofilaments TiO2-based lepidocrocite for photocatalytic hydrogen production in water-methanol mixtures
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DOI：
10.1016/j.matt.2023.05.026
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发表时间：
2023-06
期刊：
影响因子：
18.9
通讯作者：
H. Badr;Varun Natu;Ș. Neațu;F. Neațu;A. Kuncser;A. Rostas;Matthew Racey;M. Barsoum;M. Florea-M.-Fl
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作者：
H. Badr;Varun Natu;Ș. Neațu;F. Neațu;A. Kuncser;A. Rostas;Matthew Racey;M. Barsoum;M. Florea-M.-Fl
水和阳光是地球上最清洁、最可再生、最丰富的资源。长期以来，开发廉价、可扩展的光催化剂，使其在氢气（H2）生产中高度稳定一直是人类的梦想。在此，我们报道了一维纤铁矿基亚纳米丝（NF），截面为1.5 × 7 × 2，在模拟太阳光照射下，从80：20 v/v的水/甲醇混合物中产生H2。NF在混合物中稳定时间> 4，300 h，其中300 h在辐照下。表观量子产率高达11.7%。根据氘代水的结果，我们得出结论，水是H2源。此外，没有检测到由于甲醇的光催化降解而产生的二氧化碳（CO2）。因此，NF具有强大的绿色证书和大规模增长的有利可图的经济前景。我们希望这些NF将导致开发廉价和超稳定材料的新线路，以长时间光化学产生H2。
Water and sunlight are the cleanest, most renewable, and abundant resources on Earth. Developing inexpensive, scalable photocatalysts that are highly stable for hydrogen (H2) production has long been a cherished dream of humanity. Herein, we report on one-dimensional lepidocrocite-based sub-nanofilaments (NFs), ≈ 5 × 7 Å2in cross-section, that generate H2from 80:20 v/v water/methanol mixtures when illuminated by simulated sunlight. The NFs were stable in the mixtures for times >4,300 h, 300 h of which were under irradiation. Apparent quantum yields as high as 11.7% were obtained. Based on deuterated water results, we conclude that water is the H2source. Further, no carbon dioxide (CO2) due to photocatalytic degradation of methanol was detected. Therefore, the NFs have strong green credentials and lucrative economic prospects for large scale up. We expect these NFs will lead to new lines for developing cheap and ultra-stable materials to produce H2photochemically for a long time.