Systems and methods for photothermal material

Patent metadata

Field	Value
Publication number	US-11359840-B2
Application number	US-201816053323-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Aug 2, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

Chinese ink is applied on various materials and stabilized by atomic layer deposition to fabricate solar steam generation devices. The encapsulated ink has excellent photothermal properties and evaporation efficiency under simulated sunlight, holding great promise in solar evaporation device applications.

First claim

What is claimed is:

1. A photothermal membrane comprising:
a membrane having a porous network and comprising a bulk material having a hydrophilic moiety selected from the group consisting of polyvinylidene fluoride (PVDF), polypropylene (PP), polyethylene (PE), polytetrafluoroethylene (PTFE), nylon, cellulose acetate (CA), polyacrylonitrile (PAN), polycarbonate (PC), polyether etherketone (PEEK), polyimide (PI), polysulfone (PS), and polyethersulfone (PES);
a photothermal carbon coating comprising one or more of carbon nanoplatelets and carbon nanoparticles deposited on the membrane; and
an oxide coating conformally disposed on the photothermal carbon coating, the oxide coating selected from the group consisting of TiO 2 , SnO 2 , HfO 2 , ZrO 2 , SiO 2 , and In2O 3 .

2. The photothermal membrane of claim 1 , wherein the membrane further comprises an additive consisting of polyvinyl pyrrolidone (PVP), polyethylene glycol (PEG), piperazine, cellulose acetate phthalate (CAP), or malic acid and wherein the hydrophilic moiety is a polar group of the additive.

3. The photothermal membrane of claim 1 , wherein the oxide coating comprises SiO 2 , TiO 2 , or SnO 2 .

4. The photothermal membrane of claim 1 , wherein the porous network is hydrophilic.

5. The photothermal membrane of claim 1 , wherein the photothermal carbon coating comprises carbon nanoplatelets and carbon nanoparticles.

6. A photothermal heating device comprising:
a substrate having a porous network and comprising a bulk material;
a photothermal carbon coating deposited on the substrate, the phototermal carbon coating comprising a nanocarbon material and an adhesive; and
an oxide coating conformally disposed on the photothermal carbon coating, the oxide coating selected from the group consisting of TiO 2 , SnO 2 , HfO 2 , ZrO 2 , SiO 2 , and In 2 O 3 .

7. The photothermal heating device of claim 6 , wherein the photothermal carbon coating comprises carbon nanoplatelets and carbon nanoparticles.

8. The photothermal heating device of claim 6 , wherein the adhesive is selected from the group consisting of carrageenan and gelatin.

Assignees

• Uchicago Argonne Llc

Inventors

• Yang Hao-Cheng
• Darling Seth B
• Xie Yunsong
• Chen Zhaowei
• Elam Jeffrey W

Classifications

• B01D2325/43

  Specific optical properties · CPC title

• C23C16/45527

  characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations · CPC title

• C02F2101/12

  Halogens or halogen-containing compounds · CPC title

• B01D2323/36

  Introduction of specific chemical groups · CPC title

• B01D67/0072

  by deposition from the gaseous phase, e.g. sputtering, CVD, PVD · CPC title