Novel pervaporation separation of PVA/CS blend membranes for the removal of DMF from industrial wastewater DOI Open Access

Rongying Xia,

Zhixiu Yang,

Dayu Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 11, 2024

Abstract Achieving satisfactory separation of N, N‐Dimethylformamide (DMF)/water is still challenging in industrial wastewater treatment. To address this issue, a novel method involving pervaporation (PV) using polyvinyl alcohol/chitosan (PVA/CS) blend films proposed. Various characterization methods confirmed the strong compatibility between PVA and CS, blending improved their mechanical properties thermal stability. Heat treatment significantly reduced swelling degree membranes. In binary aqueous system with low concentrations DMF, controlled can be achieved by adjusting ratio to CS. The membranes exhibited preferential selectivity for DMF when CS content 40–75 wt%, which allowed concentration recovery DMF. At 20 °C feed 10 wt% solution, 2 h heat‐treated PVA/CS‐50 membrane best performance, could attributed its hydrogen bonding force, total flux 484.09 g m −2 −1 factor 5.41 PVA/CS exhibit excellent acid alkali resistant are promising candidates from technology.

Language: Английский

Hole transport layer selection for stable and efficient carbon electrode-based perovskite solar cells DOI Creative Commons

Kausar Ali Khawaja,

Wenjun Xiang,

Jacob Wall

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(17), P. 13681 - 13690

Published: Jan. 1, 2025

This study compares Spiro-OMeTAD, CuSCN, and PTAA as hole transport layers in carbon-based perovskite solar cells. Spiro-OMeTAD showed best efficiency, CuSCN better stability, while underperformed, highlighting a performance-stability trade-off.

Language: Английский

Citations

0
Pressure Engineering to Enable Improved Stability and Performance of Metal Halide Perovskite Photovoltaics DOI Creative Commons

Erin Burgard,

Saivineeth Penukula, Marco Casareto

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(6), P. 1292 - 1292

Published: March 13, 2025

In this work, we demonstrate that an external pressure of 15–30 kPa can significantly improve metal halide perovskite (MHP) film thermal stability. We through the application weight on top MHP during aging in preserving phase and mobile ion concentration, effect which hypothesize reduces extent to volatile species escape from lattice. This method is shown be effective for a more scalable approach by only applying cover glass lamination epoxy-based resin, after removed. The amount applied correlate with stability both 1 sun illumination damp heat testing. Lastly, performance photovoltaic devices improved using lamination, attributed interfacial contact between adjacent charge transport layers healing any voids or defects may exist at buried interface processing. As such, there are implications tuning enable durability solar modules toward manufacturing-scale deployment.

Language: Английский

Citations

0
Barrier layer design reduces top electrode ion migration in perovskite solar cells DOI Creative Commons
Saivineeth Penukula,

Megh N. Khanal,

Mohin Sharma

et al.

EES solar., Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We report on an examination of mobile ion concentration ( N 0 ) in perovskite solar cells (PSCs) as a function temperature and device architecture.

Language: Английский

Citations

0
Novel pervaporation separation of PVA/CS blend membranes for the removal of DMF from industrial wastewater DOI Open Access

Rongying Xia,

Zhixiu Yang,

Dayu Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 11, 2024

Abstract Achieving satisfactory separation of N, N‐Dimethylformamide (DMF)/water is still challenging in industrial wastewater treatment. To address this issue, a novel method involving pervaporation (PV) using polyvinyl alcohol/chitosan (PVA/CS) blend films proposed. Various characterization methods confirmed the strong compatibility between PVA and CS, blending improved their mechanical properties thermal stability. Heat treatment significantly reduced swelling degree membranes. In binary aqueous system with low concentrations DMF, controlled can be achieved by adjusting ratio to CS. The membranes exhibited preferential selectivity for DMF when CS content 40–75 wt%, which allowed concentration recovery DMF. At 20 °C feed 10 wt% solution, 2 h heat‐treated PVA/CS‐50 membrane best performance, could attributed its hydrogen bonding force, total flux 484.09 g m −2 −1 factor 5.41 PVA/CS exhibit excellent acid alkali resistant are promising candidates from technology.

Language: Английский

Citations

2