scholarly journals A sol–gel biotemplating route with cellulose nanocrystals to design a photocatalyst for improving hydrogen generation

2020 ◽  
Vol 8 (21) ◽  
pp. 10779-10786 ◽  
Author(s):  
Cong Wang ◽  
Jian Li ◽  
Erwan Paineau ◽  
Abdelghani Laachachi ◽  
Christophe Colbeau-Justin ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Cellulose Nanocrystals ◽  
Carrier Lifetime ◽  
Hydrogen Generation ◽  
Light Harvesting ◽  
Sol Gel ◽  
Charge Carrier Lifetime

Light harvesting capability and charge carrier lifetime play critical roles in determining the photoefficiency of a photocatalyst.

scholarly journals Sol-Gel Biotemplating Route with Cellulose Nanocrystals to Design Photocatalyst Boosting the Hydrogen Generation

2020 ◽  
Author(s):  
cong wand ◽  
jian li ◽  
Erwan Paineau ◽  
Abdelghani Laachachi ◽  
Christophe Colbeau-Justin ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Hydrogen Generation ◽  
Light Harvesting ◽  
Sol Gel ◽  
Charge Carriers ◽  
Hybrid Films ◽  
One Pot ◽  
Chiral Nematic ◽  
Straightforward Method ◽  
Chiral Nematic Structure

<br> <div> <p>Light harvesting capability and charge carriers lifetime play critical roles in determining the photoefficency of photocatalyst. Herein, a one-pot method is proposed to design mesostructured TiO<sub>2</sub> materials by taking advantage of the ability of cellulose nanocrystals (CNC) to self-assemble into chiral nematic structures during solvent evaporation. After the xerogel formation, the as-obtained CNC/TiO<sub>2</sub> hybrid films exhibit a chiral nematic structure and tunable Bragg peak reflection, generating lamellar TiO<sub>2</sub> mesostructure after the biotemplate removal by calcination. More prominently, this straightforward method can be extended to couple TiO<sub>2</sub> with other metal oxides, improving the light-harvesting and charge carriers separation of these photocatalysts, in particular for boosting hydrogen generation. This foolproof approach opens new doors for the development of nanostructured materials for solar energy conversion and catalysis.<br></p></div>

scholarly journals Sol-Gel Biotemplating Route with Cellulose Nanocrystals to Design Photocatalyst Boosting the Hydrogen Generation

2020 ◽  
Author(s):  
cong wand ◽  
jian li ◽  
Erwan Paineau ◽  
Abdelghani Laachachi ◽  
Christophe Colbeau-Justin ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Hydrogen Generation ◽  
Light Harvesting ◽  
Sol Gel ◽  
Charge Carriers ◽  
Hybrid Films ◽  
One Pot ◽  
Chiral Nematic ◽  
Straightforward Method ◽  
Chiral Nematic Structure

<br> <div> <p>Light harvesting capability and charge carriers lifetime play critical roles in determining the photoefficency of photocatalyst. Herein, a one-pot method is proposed to design mesostructured TiO<sub>2</sub> materials by taking advantage of the ability of cellulose nanocrystals (CNC) to self-assemble into chiral nematic structures during solvent evaporation. After the xerogel formation, the as-obtained CNC/TiO<sub>2</sub> hybrid films exhibit a chiral nematic structure and tunable Bragg peak reflection, generating lamellar TiO<sub>2</sub> mesostructure after the biotemplate removal by calcination. More prominently, this straightforward method can be extended to couple TiO<sub>2</sub> with other metal oxides, improving the light-harvesting and charge carriers separation of these photocatalysts, in particular for boosting hydrogen generation. This foolproof approach opens new doors for the development of nanostructured materials for solar energy conversion and catalysis.<br></p></div>

Cu2O nanoparticles sensitize TiO2/CdS nanowire arrays to prolong charge carrier lifetime and highly enhance unassisted photoelectrochemical hydrogen generation with 4.3% efficiency

2020 ◽  
Vol 49 (27) ◽  
pp. 9282-9293 ◽  
Author(s):  
Kangbo Jiang ◽  
Wenzhong Wang ◽  
Jun Wang ◽  
Tianyu Zhu ◽  
Lizhen Yao ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Lifetime ◽  
Hydrogen Generation ◽  
Charge Carriers ◽  
Nanowire Arrays ◽  
Highly Efficient ◽  
Effective Separation ◽  
Cds Nanowire ◽  
Cu2o Nanoparticles ◽  
Charge Carrier Lifetime

Effective separation of charge carriers and substantial prolongation of charge carrier lifetime are two vital issues for a photoanode to achieve highly efficient photoelectrochemical (PEC) hydrogen generation.

scholarly journals Extraordinarily High Minority Charge Carrier Lifetime Observed in Crystalline Silicon

Solar RRL ◽  
2021 ◽  
Author(s):  
Bernd Steinhauser ◽  
Tim Niewelt ◽  
Armin Richter ◽  
Rebekka Eberle ◽  
Martin Schubert
Keyword(s):  
Charge Carrier ◽  
Carrier Lifetime ◽  
Crystalline Silicon ◽  
Minority Charge Carrier ◽  
Charge Carrier Lifetime

scholarly journals Enhancing Charge Carrier Lifetime in Metal Oxide Photoelectrodes through Mild Hydrogen Treatment

2017 ◽  
Vol 7 (22) ◽  
pp. 1701536 ◽  
Author(s):  
Ji-Wook Jang ◽  
Dennis Friedrich ◽  
Sönke Müller ◽  
Marlene Lamers ◽  
Hannes Hempel ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Metal Oxide ◽  
Carrier Lifetime ◽  
Hydrogen Treatment ◽  
Charge Carrier Lifetime
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