Xinyi Wan

1 month ago | nature.com | Mengpei Jiang |Jianjun Li |Xinyi Wan |Jianhang Qiu |Tingting Yao |Wenyu Zhang | +5 more

Plastic photoreforming offers a compelling technology to address the global issue of the large amount cumulative plastic waste by converting it into valuable fuels and chemical feedstocks. However, constrained by insufficient mass and energy transfers, the existing hydrophilic plastic photoreforming systems heavily rely on the unsustainable chemical pre-treatments in corrosive solutions. Herein, we demonstrate a conceptual plastic photoreforming system based on a floatable hydrophobic organic-inorganic hybrid-TiO2 photocatalyst, which unlocks superoxide radical as the major oxidizing species and forms a four-phase interface among photocatalyst, plastic substrate, water and air, thus greatly enhancing the mass and energy transfers. Consequently, the photoreforming yield rates in neutral aqueous solutions are increased by 1–2 orders of magnitude for typical plastic including polyethylene, polypropylene, and polyvinyl chloride without applying pre-treatments, whilst producing high-value C2H5OH with a selectivity of over 40%. We believe this work reveals a feasible route to sustainable plastic photoreforming. Plastic photoreforming offers a promising route for recycling plastic waste but typically depends on unsustainable, corrosive conditions. Here, the authors present a floatable organic–inorganic hybrid TiO2 material that enables efficient conversion of common plastics such as PE, PP, and PVC under neutral conditions.

Nov 8, 2024 | arxiv.org | Man Tsung |Penghui Qi |Min Lin |Xinyi Wan

Nov 30, 2023 | huggingface.co | Xinyi Wan |Min Lin |Penghui Qi |Guangxing Huang

Papers Published on Nov 30, 2023 ยท Featured in Daily Papers on Jan 22 Abstract Pipeline parallelism is one of the key components for large-scale distributedtraining, yet its efficiency suffers from pipeline bubbles which were deemedinevitable.