Hua Dong
4 Papers
Hua Dong is an academic researcher. The author has contributed to research in topics: Viscosity & Perovskite (structure). The author has an hindex of 1, co-authored 3 publications.
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Papers
An effective and economical encapsulation method for trapping lead leakage in rigid and flexible perovskite photovoltaics
Zhen Li,Xin Wu,Sheng Wu,Danpeng Gao,Hua Dong,Fuzhi Huang,Xiaotian Hu,Alex K.-Y. Jen,Zong Hua Zhu +8 more
TL;DR: In this article , a facile and economical encapsulation process is developed for the first time by employing the mixture of a cation-exchange resin (CER) and an ultraviolet resin as an encapsulant for coating on the metal-side of both rigid and flexible perovskite photovoltaic (PV) devices to effectively capture the leaked Pb2+.
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Heavy oil viscosity reduction through aquathermolysis catalyzed by Ni20(NiO)80 nanocatalyst
Hao Shi,Shengwei Guo,Hua Dong +2 more
TL;DR: In this paper , a Ni-based nanocatalyst for heavy oil aquathermolysis is fabricated through a sol-gel method, which is magnetic Ni20(NiO)80 nanoparticles with diameter about 20 nm.
8
Alleviation of liquid sulfur blockage by altering sulfur wettability in sour gas reservoirs
Xia Zhong,Zihong Dong,Xin Pei,Hua Dong +3 more
Abstract: Abstract In sour gas reservoirs exploitation, liquid sulfur deposited in the formation could block natural gas passage channels, severely reducing gas field production. To address this problem, we successfully regulate the wettability of liquid sulfur on rock surfaces by modifying them with alkoxysilanes. It is found that enhancing the sulfophobicity of the rock surface significantly reduces the difficulty of gas-phase breakthrough of channel blockage caused by liquid sulfur deposition. During the simulated gas flooding process, the liquid sulfur recovery rate in neutral and sulfophobic rocks is increased by 48.3% and 124.4%, respectively, compared with untreated natural sulfophilic rocks, resulting in 29.3% and 50.0% increase in porosity of the rocks after flooding, respectively. These results indicate that the modified rock surface, especially sulfophobic rock surface, could effectively alleviate the blockage of gas production channels caused by liquid sulfur deposition. Mechanisms revealed by visualized experimental results show that in gas flooding in more sulfophobic cores, the swept area of gas phase is larger and the amount of residual sulfur in the swept area is less, so the sulfur recovery rate is higher than untreated sulfophilic rock, and the blockage caused by liquid sulfur in the cores could be effectively reduced.