二维 MoN1.2-rGO 堆叠异质结构支持水态改性以实现高效界面太阳能蒸发,Advanced Functional Materials

当前位置： X-MOL 学术 › Adv. Funct. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

二维 MoN1.2-rGO 堆叠异质结构支持水态改性以实现高效界面太阳能蒸发
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2023-03-14 , DOI: 10.1002/adfm.202214828
Huimin Yu ₁ , Deyu Wang ₁ , Huanyu Jin _{2,

3} , Pan Wu ₁ , Xuan Wu ₁ , Dewei Chu ₄ , Yi Lu ₅ , Xiaofei Yang ₅ , Haolan Xu ₁

Affiliation

提高界面太阳能蒸发性能对于该技术在太阳能驱动海水淡化中的实际应用至关重要。降低蒸发焓是显着提高太阳能蒸发率最有前途和最有效的策略之一。在这项研究中，开发了一种通过在亲水性杂化材料和水分子之间引入非均相相互作用来降低汽化焓的新途径。二维 MoN _1.2纳米片被合成并与 rGO 纳米片集成，形成堆叠的 MoN _1.2 -rGO 异质结构，具有用于界面太阳能蒸发的大量结界面。分子动力学模拟证实了原子厚的 2D MoN _1.2和 MoN _{1.2中的 rGO}-rGO 异质结构同时与水分子相互作用，而相互作用却截然不同。这些异质相互作用导致水状态不平衡，这很容易破坏水分子之间的氢键，从而导致蒸发焓显着降低并提高太阳能蒸发率（2.6 kg m ^-2 h ^-1）。这项研究为设计 2D-2D 异质结构以调节蒸发焓以提高清洁水生产的太阳能蒸发率提供了一种有前途的策略。

"点击查看英文标题和摘要"

2D MoN1.2-rGO Stacked Heterostructures Enabled Water State Modification for Highly Efficient Interfacial Solar Evaporation

Improving interfacial solar evaporation performance is crucial for the practical application of this technology in solar-driven seawater desalination. Lowering evaporation enthalpy is one of the most promising and effective strategies to significantly improve solar evaporation rate. In this study, a new pathway to lower vaporization enthalpy by introducing heterogeneous interactions between hydrophilic hybrid materials and water molecules is developed. 2D MoN_1.2 nanosheets are synthesized and integrated with rGO nanosheets to form stacked MoN_1.2-rGO heterostructures with massive junction interfaces for interfacial solar evaporation. Molecular dynamics simulation confirms that atomic thick 2D MoN_1.2 and rGO in the MoN_1.2-rGO heterostructures simultaneously interact with water molecules, while the interactions are remarkably different. These heterogeneous interactions cause an imbalanced water state, which easily breaks the hydrogen bonds between water molecules, leading to dramatically lowered vaporization enthalpy and improved solar evaporation rate (2.6 kg m⁻² h⁻¹). This study provides a promising strategy for designing 2D-2D heterostructures to regulate evaporation enthalpy to improve solar evaporate rate for clean water production.

更新日期：2023-03-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南