Schematic diagram of the PVDF1/G1-BTx multifunctional membrane for a) solar evaporation; b) power generation; c) pollutant degradation and d) Self-cleaning/monitoring.

Major Contributions

1.Development of a Multifunctional Membrane
We successfully designed and fabricated a graphene-based membrane that integrates four distinct functionalities: solar evaporation, power generation, piezo-photodegradation, and self-cleaning/self-monitoring. This Phra Phrom-inspired design allows the membrane to address environmental remediation and resource regeneration challenges simultaneously, showcasing its innovative and practical potential.

2.Enhanced Piezoelectric Performance through Material Synergy
By combining graphene and barium titanate (BaTiO₃) with polyvinylidene fluoride (PVDF), we induced the self-assembly of the piezoelectric β-phase in PVDF. This synergy significantly improved the piezoelectric and photocatalytic properties of the membrane, enabling efficient pollutant degradation while generating energy from mechanical and light stimuli.

3.High Efficiency in Water Desalination and Energy Harvesting
Our membrane achieved a water production rate of 0.99 kg·m⁻²·h⁻¹ under 1 sun illumination, meeting WHO standards for drinking water. Additionally, it demonstrated a maximum power output of 5.73 W·m⁻² under simulated natural conditions. These results highlight the dual capabilities of our membrane in providing clean water and renewable energy, addressing critical global challenges effectively.


主要貢獻

1.開發多功能膜
我們成功設計並製造了一種石墨烯基膜，將四種功能整合於一體：太陽能蒸發、發電、壓電光降解，以及自清潔/監測。這種設計靈感來自四面佛的概念，讓膜能夠同時應對環境修復與資源再生的挑戰，展現其創新性與實用潛力。

2.通過材料協同增強壓電性能
通過將石墨烯與鈦酸鋇（BaTiO₃）結合聚偏二氟乙烯（PVDF），我們促進了壓電β相的自組裝。這種協同作用顯著提升了膜的壓電與光催化性能，使其能夠在機械和光刺激下有效降解污染物並產生能量。

3.高效水淡化與能源收集
我們的膜在1倍太陽光照射下，達到了0.99 kg·m⁻²·h⁻¹的水生產速率，符合世界衛生組織（WHO）的飲用水標準。此外，它在模擬自然條件下實現了5.73 W·m⁻²的最大功率輸出。這些結果突顯了我們膜在提供潔淨水與可再生能源方面的雙重能力，有效應對全球關鍵挑戰。