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Institution

Nanjing Tech University

EducationNanjing, China
About: Nanjing Tech University is a education organization based out in Nanjing, China. It is known for research contribution in the topics: Catalysis & Membrane. The organization has 21827 authors who have published 21794 publications receiving 364050 citations. The organization is also known as: Nangongda & Nánjīng Gōngyè Dàxúe.


Papers
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Journal ArticleDOI
TL;DR: In this article, the pore structure of geopolymers was investigated by scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), and Brunauer-Emmett-Teller (BET) nitrogen adsorption.

165 citations

Journal ArticleDOI
30 Jul 2021-Science
TL;DR: In this paper, a liquid medium annealing (LMA) technology is used to create a robust chemical environment and constant heating field to modulate crystal growth over the entire film, which produces films with high crystallinity, fewer defects, desired stoichiometry, and overall film homogeneity.
Abstract: Solution processing of semiconductors is highly promising for the high-throughput production of cost-effective electronics and optoelectronics. Although hybrid perovskites have potential in various device applications, challenges remain in the development of high-quality materials with simultaneously improved processing reproducibility and scalability. Here, we report a liquid medium annealing (LMA) technology that creates a robust chemical environment and constant heating field to modulate crystal growth over the entire film. Our method produces films with high crystallinity, fewer defects, desired stoichiometry, and overall film homogeneity. The resulting perovskite solar cells (PSCs) yield a stabilized power output of 24.04% (certified 23.7%, 0.08 cm2) and maintain 95% of their initial power conversion efficiency (PCE) after 2000 hours of operation. In addition, the 1-cm2 PSCs exhibit a stabilized power output of 23.15% (certified PCE 22.3%) and keep 90% of their initial PCE after 1120 hours of operation, which illustrates their feasibility for scalable fabrication. LMA is less climate dependent and produces devices in-house with negligible performance variance year round. This method thus opens a new and effective avenue to improving the quality of perovskite films and photovoltaic devices in a scalable and reproducible manner.

164 citations

Journal ArticleDOI
TL;DR: Two new robust 3D porous metal-cyclam-based zirconium MOFs, which bear dual catalytic sites (Zr and Cu/Ni), enable chemistry not possible with the cyclam ligand under the same conditions and can be used as recoverable stable heterogeneous catalysts without losing performance.
Abstract: Metal–organic frameworks (MOFs) have shown great promise in catalysis, mainly due to their high content of active centers, large internal surface areas, tunable pore size, and versatile chemical functionalities. However, it is a challenge to rationally design and construct MOFs that can serve as highly stable and reusable heterogeneous catalysts. Here two new robust 3D porous metal-cyclam-based zirconium MOFs, denoted VPI-100 (Cu) and VPI-100 (Ni), have been prepared by a modulated synthetic strategy. The frameworks are assembled by eight-connected Zr6 clusters and metallocyclams as organic linkers. Importantly, the cyclam core has accessible axial coordination sites for guest interactions and maintains the electronic properties exhibited by the parent cyclam ring. The VPI-100 MOFs exhibit excellent chemical stability in various organic and aqueous solvents over a wide pH range and show high CO2 uptake capacity (up to ∼9.83 wt% adsorption at 273 K under 1 atm). Moreover, VPI-100 MOFs demonstrate some of t...

164 citations

Journal ArticleDOI
Li-Hua Mao1, Wen-Qi Tang1, Zheng-Yan Deng1, Si-Si Liu1, Cai-Feng Wang1, Su Chen1 
TL;DR: In this article, surface-passivated photoluminescent carbon dots (CDs) were prepared via a facile one-step pyrolysis of poly(acrylic acid) (PAA) in the presence of glycerol.
Abstract: Surface-passivated photoluminescent carbon dots (CDs) were prepared via a facile one-step pyrolysis of poly(acrylic acid) (PAA) in the presence of glycerol. In the formation process of CDs, glycerol not only acts as solvent, but also promotes the carbonization of PAA (carbon source) and passivates the surface of CDs. The as-prepared CDs can emit bright-white fluorescence under ultraviolet (UV) illumination. The structure and optical properties of the CDs were thoroughly investigated. The CDs show excellent solubility in water and high photoluminescence stability in UV-radiation, salty, oxidic, or reductive environments, suggesting their great promise as white-light-emitting materials. For their practical applications, a white light-emitting diode (LED) with CDs as white-light converters was demonstrated. Moreover, a backlight with use of CDs as coatings was successfully constructed for the first time. This research would offer a promising new way to obtain white fluorescent CDs and suggests their strong p...

163 citations


Authors

Showing all 22047 results

NameH-indexPapersCitations
Yi Chen2174342293080
Richard H. Friend1691182140032
Hua Zhang1631503116769
Wei Huang139241793522
Jian Zhou128300791402
Haiyan Wang119167486091
Jian Liu117209073156
Lain-Jong Li11362758035
Hong Wang110163351811
Jun-Jie Zhu10375441655
Stefan Kaskel10170536201
Hong Liu100190557561
Dirk De Vos9664233214
Peng Li95154845198
Feng Liu95106738478
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023125
2022502
20212,923
20202,572
20192,340
20181,967