Elaboration and characterization of nanoplate structured alpha-Fe2O3 films by Ag3PO4

A new strategy for surface treatment of hematite nanoplates for efficient photoelectrochemical (PEC) performances is proposed. Silver orthophosphate (Ag₃PO₄) has been adopted to mediate the formation of α-Fe₂O₃ films. Phosphate ions in Ag₃PO₄ is found to cause a significant morphology change during annealing process, from β-FeOOH nanorod arrays to hematite nanoplates. Meanwhile, Ag ions is doped into α-Fe₂O₃ film. The obtained nanoplate structured Fe₂O₃ –Ag–P films demonstrate much higher photoelectrochemical performance as photoanodes than the bare Fe₂O₃ nanorod thin films. The effects of phosphate and silver ions on the morphology, surface characteristics and the PEC properties of the photoanodes are investigated

Global Practice and the Transnational Flows of Knowledge: A Case Study on Diwang Tower, 1996

Diwang Tower built in 1996 was the tallest building in Shenzhen before 2011. Its image waswidelyusedasasymbolofpropagandashowcasingthesuccessofChina’sopening up policy and Shenzhen’s economy. As a result of international collaboration Diwang Tower was a crucial node where transnational flows of knowledge intersected. Many foreignfirmsandexpertscontributedinsuchaspectsasarchitecturaldesign,structural technology, and construction and property management. Diwang Tower showed ”Chinese” characteristics in subtle ways, while being ”modern” and ”international” at the same time. This paper focuses on the transnational flows of knowledge and the adaptation of modern aesthetics in the Chinese cultural context. It concludes that Diwang Tower is an important milestone in the contemporary architectural history of China since 1978, especially regarding the introduction of Western architecture and its adaptation in the Chinese context