Jianjun Li

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.

Dec 17, 2024 | mdpi.com | Jianjun Li

1. IntroductionThe Sun is the primary energy source for the Earth’s climate system, yet the quantitative assessment of the impact of solar variability on climate change remains incomplete. The influence of solar forcing, combined with additional natural variability, is complex in both magnitude and phase [1]. Separating these natural effects from anthropogenic ones is crucial for understanding the attribution of human-induced variability in Earth’s surface temperature [2].

Nov 10, 2024 | mdpi.com | Jiahong Liu |Lu Wang |Jianjun Li |Laiyuan Shi

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Sep 24, 2024 | onlinelibrary.wiley.com | Shihao Dong |Aili Sun |Tao Lin |Jianjun Li

Supporting Information Filename Description ins13448-sup-0001-figuresS1-S4.docx4.5 MB Fig. S1 Multiple Vespa soror workers that have been recruited to the entrance of an Apis cerana colony. Fig. S2 A Vespa soror worker approaches Apis mellifera workers near the entrance of their bee colony. Fig. S3 (A) Entrance of a Vespa soror nestbox. A tube was held at the entrance to capture live worker hornets. (B) We used a capillary tube to collect venom from each hornet's sting. Fig.

Jul 24, 2024 | mdpi.com | Yuhong Tang |Guang Li |Ming Zhang |Jianjun Li

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.