Construction of UiO-66/Bi4O5Br2 Type-II Heterojunction to Boost Charge Transfer for Promoting Photocatalytic CO2 Reduction Performance

One of the basic challenges of CO2 photoreduction is to develop efficient photocatalysts, and the construction of heterostructure photocatalysts with intimate interfaces is an effective strategy to enhance interfacial charge transfer for realizing high photocatalytic activity. Herein, a novel UiO-66/Bi4O5Br2 heterostructure photocatalyst was constructed by depositing UiO-66 nanoparticles with octahedral morphology over the Bi4O5Br2 nanoflowers assembled from the Bi4O5Br2 nanosheets via an electrostatic self-assembly method. A tight contact interface and a built-in electric field were formed between the UiO-66 and the Bi4O5Br2, which was conducive to the photo-electrons transfer from the Bi4O5Br2 to the UiO-66 and the formation of a type-II heterojunction with highly efficient charge separation. As a result, the UiO-66/Bi4O5Br2 exhibited improved photocatalytic CO2 reduction performance with a CO generation rate of 8.35 μmol h−1 g−1 without using any sacrificial agents or noble co-catalysts. This work illustrates an applicable tactic to develop potent photocatalysts for clean energy conversion.

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Toluene Oxidation over the M–Al (M = Ce, La, Co, Ce–La, and Ce–Co) Catalysts Derived from the Modified “One-Pot” Evaporation-Induced Self-Assembly Method: Effects of Microwave or Ultrasound Irradiation and Noble-Metal Loading on Catalytic Activity and Stability

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.9b06306 ◽

2020 ◽

Vol 59 (13) ◽

pp. 5624-5635

Author(s):

Ali Rastegarpanah ◽

Fereshteh Meshkani ◽

Yuxi Liu ◽

Jiguang Deng ◽

Lin Jing ◽

...

Keyword(s):

Catalytic Activity ◽

Noble Metal ◽

Self Assembly ◽

Ultrasound Irradiation ◽

One Pot ◽

Toluene Oxidation ◽

Co Catalysts ◽

Assembly Method ◽

Evaporation Induced Self Assembly ◽

Method Effects

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Light-Induced In Situ Formation of a Nonmetallic Plasmonic MoS2/MoO3–x Heterostructure with Efficient Charge Transfer for CO2 Reduction and SERS Detection

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c21401 ◽

2021 ◽

Author(s):

Juan Li ◽

Xiaohao Xu ◽

Baibiao Huang ◽

Zaizhu Lou ◽

Baojun Li

Keyword(s):

Charge Transfer ◽

Co2 Reduction ◽

Sers Detection ◽

Efficient Charge ◽

In Situ Formation

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Charge-transfer regulated visible light driven photocatalytic H2 production and CO2 reduction in tetrathiafulvalene based coordination polymer gel

Nature Communications ◽

10.1038/s41467-021-27457-4 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Parul Verma ◽

Ashish Singh ◽

Faruk Ahamed Rahimi ◽

Pallavi Sarkar ◽

Sukhendu Nath ◽

...

Keyword(s):

Photocatalytic Activity ◽

Charge Transfer ◽

Coordination Polymer ◽

Visible Light ◽

Self Assembly ◽

Hydrogen Generation ◽

Co2 Reduction ◽

Pt Nanoparticles ◽

Polymer Gel

AbstractThe much-needed renewable alternatives to fossil fuel can be achieved efficiently and sustainably by converting solar energy to fuels via hydrogen generation from water or CO2 reduction. Herein, a soft processable metal-organic hybrid material is developed and studied for photocatalytic activity towards H2 production and CO2 reduction to CO and CH4 under visible light as well as direct sunlight irradiation. A tetrapodal low molecular weight gelator (LMWG) is synthesized by integrating tetrathiafulvalene (TTF) and terpyridine (TPY) derivatives through amide linkages and results in TPY-TTF LMWG. The TPY-TTF LMWG acts as a linker, and self-assembly of this gelator molecules with ZnII ions results in a coordination polymer gel (CPG); Zn-TPY-TTF. The Zn-TPY-TTF CPG shows high photocatalytic activity towards H2 production (530 μmol g−1h−1) and CO2 reduction to CO (438 μmol g−1h−1, selectivity > 99%) regulated by charge-transfer interactions. Furthermore, in situ stabilization of Pt nanoparticles on CPG (Pt@Zn-TPY-TTF) enhances H2 evolution (14727 μmol g−1h−1). Importantly, Pt@Zn-TPY-TTF CPG produces CH4 (292 μmol g−1h−1, selectivity > 97%) as CO2 reduction product instead of CO. The real-time CO2 reduction reaction is monitored by in situ DRIFT study, and the plausible mechanism is derived computationally.

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The Interplay of Conjugation and Metal Coordination in Tuning the Electron Transfer Abilities of NTA-Graphene Based Interfaces

International Journal of Molecular Sciences ◽

10.3390/ijms23010543 ◽

2022 ◽

Vol 23 (1) ◽

pp. 543

Author(s):

Magdalena Kaźmierczak ◽

Bartosz Trzaskowski ◽

Silvio Osella

Keyword(s):

Electron Transfer ◽

Charge Transfer ◽

Self Assembly ◽

Surface Coverage ◽

Theoretical Calculations ◽

Nitrilotriacetic Acid ◽

Graphene Monolayer ◽

Coverage Density ◽

Efficient Charge ◽

A Minor

An artificial leaf is a concept that not only replicates the processes taking place during natural photosynthesis but also provides a source of clean, renewable energy. One important part of such a device are molecules that stabilize the connection between the bioactive side and the electrode, as well as tune the electron transfer between them. In particular, nitrilotriacetic acid (NTA) derivatives used to form a self-assembly monolayer chemisorbed on a graphene monolayer can be seen as a prototypical interface that can be tuned to optimize the electron transfer. In the following work, interfaces with modifications of the metal nature, backbone saturation, and surface coverage density are presented by means of theoretical calculations. Effects of the type of the metal and the surface coverage density on the electronic properties are found to be key to tuning the electron transfer, while only a minor influence of backbone saturation is present. For all of the studied interfaces, the charge transfer flow goes from graphene to the SAM. We suggest that, in light of the strength of electron transfer, Co2+ should be considered as the preferred metal center for efficient charge transfer.

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Efficient and stable charge transfer channels for photocatalytic water splitting activity of CdS without sacrificial agents

Journal of Materials Chemistry A ◽

10.1039/d0ta06177h ◽

2020 ◽

Vol 8 (40) ◽

pp. 20963-20969 ◽

Cited By ~ 5

Author(s):

Wei Chen ◽

Guo-Bo Huang ◽

Hao Song ◽

Jian Zhang

Keyword(s):

Charge Transfer ◽

Water Splitting ◽

Photocatalytic Water Splitting ◽

Transfer Channel ◽

Efficient Charge ◽

Transfer Channels

An efficient charge transfer channel for improving the photocatalytic water splitting activity and durability of CdS without sacrificial agents.

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Silver grafted graphitic-carbon nitride ternary hetero-junction Ag/gC3N4(Urea)-gC3N4(Thiourea) with efficient charge transfer for enhanced visible-light photocatalytic green H2 production

Applied Surface Science ◽

10.1016/j.apsusc.2021.149900 ◽

2021 ◽

Vol 558 ◽

pp. 149900

Author(s):

Devipriya Gogoi ◽

Adit Kumar Shah ◽

Mohammad Qureshi ◽

Animes Kumar Golder ◽

Nageswara Rao Peela

Keyword(s):

Charge Transfer ◽

Visible Light ◽

Carbon Nitride ◽

H2 Production ◽

Graphitic Carbon ◽

Graphitic Carbon Nitride ◽

Efficient Charge ◽

Visible Light Photocatalytic

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An In-Situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids with Efficient Photo-Induced Charge Transfer

Nanoscale Research Letters ◽

10.1186/s11671-021-03504-3 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Chunzheng Lv ◽

Lirong He ◽

Jiahong Tang ◽

Feng Yang ◽

Chuhong Zhang

Keyword(s):

Charge Transfer ◽

Electric Field ◽

Self Assembly ◽

Molecular Level ◽

Surface Photovoltage ◽

Zno Nanorod ◽

In Situ Reaction ◽

Perylene Bisimide ◽

Induced Charge

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

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Interfacing RuO2 with Pt to induce efficient charge transfer from Pt to RuO2 for highly efficient and stable oxygen evolution under acidic media

Journal of Materials Chemistry A ◽

10.1039/d1ta01587g ◽

2021 ◽

Author(s):

Taehyun Kwon ◽

Heesu Yang ◽

Minki Jun ◽

Taekyung Kim ◽

Jinwhan Joo ◽

...

Keyword(s):

Charge Transfer ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Acidic Media ◽

Highly Efficient ◽

Efficient Charge ◽

Stable Oxygen ◽

The Stability

The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrOx or RuOx. RuOx is particularly vulnerable to high overpotential in acidic media, due...

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