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Zhaofu Fei

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Related publications (133)

Halide exchange in the passivation of perovskite solar cells with functionalized ionic

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Farzaneh Fadaei Tirani, Andreas Züttel, Yi Zhang, Wen Luo, Hiroyuki Kanda, Mousa Abdulla M E Abuhelaiqa, Mo Li, Bin Ding

Applying additives to perovskite precursor solutions is an effective way to passivate perovskite films for the construction of perovskite solar cells (PSCs) with increased power-conversion efficiencies (PCEs) and enhanced stabilities. Ionic liquids (ILs) w ...

ELSEVIER2022

The Chemistry of the Passivation Mechanism of Perovskite Films with Ionic Liquids

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Farzaneh Fadaei Tirani

Passivation of perovskite films by ionic liquids (ILs)improves the performance (efficiency and stability) of perovskitesolar cells (PSCs). However, the role of ILs in the passivation ofperovskitefilms is not fully understood. Here, we report thereactions o ...

AMER CHEMICAL SOC2022

Efficient Solid-State Electrolytes Based on Aryl-Modified Imidazolium Ionic Crystals for Quantum Dot-Sensitized Solar Cells

Paul Joseph Dyson, Zhaofu Fei

Cost-effective solid-state electrolytes with improved conductivity and device performances have received much research interest in (photo)-electrochemical cells, including solar cells, secondary batteries, and so on. In this work, a series of organic ionic ...

AMER CHEMICAL SOC2021

Boosting hydrogen production via urea electrolysis on an amorphous nickel phosphide/graphene hybrid structure

Paul Joseph Dyson, Zhaofu Fei, Lu Chen, Yun Tong

Overall urea electrolysis has favorable thermodynamic properties and can complement traditional water splitting by simultaneously purifying urea-rich waste streams. However, the kinetics of the reaction is slow and more efficient catalysts are required. In ...

SPRINGER2021

Lignin First: Confirming the Role of the Metal Catalyst in Reductive Fractionation

Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Antoine Philippe Van Muyden, Lu Chen, Xinjiang Cui

Rhodium nanoparticles embedded on the interior of hollow porous carbon nanospheres, able to sieve monomers from polymers, were used to confirm the precise role of metal catalysts in the reductive catalytic fractionation of lignin. The study provides clear ...

AMER CHEMICAL SOC2021

Recent advances in graphite carbon nitride-based nanocomposites: structure, antibacterial properties and synergies

Paul Joseph Dyson, Zhaofu Fei

Bacterial infections and transmission threaten human health and well-being. Graphite carbon nitride (g-C3N4), a promising photocatalytic antibacterial nanomaterial, has attracted increasing attention to combat bacterial transmission, due to the outstanding ...

ROYAL SOC CHEMISTRY2021

Engineering long-term stability into perovskite solar cells via application of a multi-functional TFSI-based ionic liquid

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Farzaneh Fadaei Tirani, Andreas Züttel, Yi Zhang, Wen Luo, Hiroyuki Kanda, Bin Ding, Bing Zhang

Organic-inorganic metal-halide perovskite solar cells (PSCs) have achieved a certified power-conversion efficiency (PCE) of 25.5%. However, long-term stability and air stability of the PSCs are still major concerns and hamper commercialization. Herein, we ...

2021

Anchoring single platinum atoms onto nickel nanoparticles affords highly selective catalysts for lignin conversion

Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Ulf Anders Hagfeldt, Antoine Philippe Van Muyden, Linfeng Pan, Lichen Bai, Lu Chen, Jun Li, Yun Tong

Due to the highly complex polyphenolic structure of lignin, depolymerization without a prior chemical treatment is challenging, and new catalysts are required. Atomically dispersed catalysts are able to maximize the atomic efficiency of noble metals, simul ...

ELSEVIER2021

A polymeric ionic liquid catalyst for the N-formylation and N-methylation of amines using CO2/PhSiH3

Paul Joseph Dyson, Zhaofu Fei, Aswin Gopakumar, Andreas Züttel, Dmitry Vasilyev, Kyriakos Stylianou, Arunraj Chidambaram, Serhii Shyshkanov

We describe a polymeric ionic liquid (PIL) derived from trimethyl(p-vinylbenzyl)ammonium chloride ([VBTAm]Cl) that efficiently catalyzes the N-formylation of amines employing CO2 and PhSiH3 at room temperature with low catalyst loadings in near-quantitativ ...

2020

Liquid Nitrogen-Mediated Thermal Shock for Instantaneous Detachment of Multi-walled Carbon Nanotube Films from Substrates and Their Application in Supercapacitors

Paul Joseph Dyson, Zhaofu Fei, Zhangjun Huang, Haiyan Jia

Pristine multiwalled carbon nanotube (MWNT) films have a range of important applications. Currently, vacuum filtration is the main method used to prepare MWNT films, which limits their large-scale production. Solvent evaporation is an alternative method us ...

AMER CHEMICAL SOC2020

Transformation of Glucose to 5-Hydroxymethylfurfural Over Regenerated Cellulose Supported Nb2O5 center dot nH(2)O in Aqueous Solution

Paul Joseph Dyson, Zhaofu Fei, Lu Chen, Fangmin Huang

Niobic acid (Nb2O5 center dot nH(2)O) was immobilized on regenerated cellulose (Re-Cellulose) to afford a heterogeneous catalyst, termed Nb2O5 center dot nH(2)O@Re-Cellulose, that was characterized by powder X-ray diffraction, microscopy (SEM and TEM) and ...

SPRINGER2020

Acceptorless dehydrogenation and hydrogenation of N- and O-containing compounds on Pd3Au1(111) facets

Paul Joseph Dyson, Zhaofu Fei, Antoine Philippe Van Muyden, Tao Wang, Zhangjun Huang, Xinjiang Cui

Catalytic dehydrogenation and hydrogenation of amines and alcohols are important in the synthesis of fine chemicals. Despite several efficient homogeneous catalysts having been identified, highly active heterogeneous catalysts remain elusive, although they ...

2020

An Efficient Approach to Fabricate Air-Stable Perovskite Solar Cells via Addition of a Self-Polymerizing Ionic Liquid

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Valentin Ianis Emmanuel Queloz, Farzaneh Fadaei Tirani, Tom Theodorus Antonius Lummen, Cristina Roldán Carmona, Nikita Drigo, Yi Zhang, Zhangjun Huang, Rui Xia

Despite the excellent photovoltaic properties achieved by perovskite solar cells at the laboratory scale, hybrid perovskites decompose in the presence of air, especially at high temperatures and in humid environments. Consequently, high-efficiency perovski ...

Wiley2020

A TiO2/Nb2O5 center dot nH(2)O heterojunction catalyst for conversion of glucose into 5-hydroxymethylfurfural in water

Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Fangmin Huang

A series of water-tolerant Lewis acidic TiO2/Nb2O5 center dot nH(2)O heterojunction catalysts with different Ti : Nb ratios have been prepared and investigated in the conversion of glucose into HMF in water. Under optimized conditions (i.e. 150 degrees C, ...

ROYAL SOC CHEMISTRY2020

Nitrogen-Incorporated Cobalt Sulfide/Graphene Hybrid Catalysts for Overall Water Splitting

Paul Joseph Dyson, Zhaofu Fei, Lu Chen, Pengzuo Chen, Yun Tong

Water electrolysis is an advanced and sustainable energy conversion technology used to generate H-2. However, the low efficiency of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) hampers the overall water-splitting catalytic perf ...

WILEY-V C H VERLAG GMBH2020

Selective Acceptorless Dehydrogenation of Primary Amines to Imines by Core-Shell Cobalt Nanoparticles

Paul Joseph Dyson, Zhaofu Fei, Matthias Beller, Xinjiang Cui

Core-shell nanocatalysts are attractive due to their versatility and stability. Here, we describe cobalt nanoparticles encapsulated within graphitic shells prepared via the pyrolysis of a cationic poly-ionic liquid (PIL) with a cobalt(II) chloride anion. T ...

Wiley-VCH Verlag GmbH2020

CO(2)Methanation via Amino Alcohol Relay Molecules Employing a Ruthenium Nanoparticle/Metal Organic Framework Catalyst

Paul Joseph Dyson, Zhaofu Fei, Kyriakos Stylianou, Arunraj Chidambaram, Serhii Shyshkanov, Ngoc Tú Nguyên, Xinjiang Cui

Methanation of carbon dioxide (CO2) is attractive within the context of a renewable energy refinery. Herein, we report an indirect methanation method that harnesses amino alcohols as relay molecules in combination with a catalyst comprising ruthenium nanop ...

Wiley-VCH Verlag GmbH2020

Auto-passivation of crystal defects in hybrid imidazolium/methylammonium lead iodide films by fumigation with methylamine affords high efficiency perovskite solar cells

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Emad Oveisi, Farzaneh Fadaei Tirani, Erfan Shirzadi, Giulia Grancini, Yi Zhang, Xuehui Liu

Hybrid perovskite solar cells have attracted tremendous interest in the photovoltaic community. Despite their high defect tolerance, reducing the trap density by material engineering and surface modification is still critical to further boost performance. ...

Elsevier2019

Application of a Tetra-TPD-Type Hole-Transporting Material Fused by a Troger's Base Core in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Zhaofu Fei, Cristina Roldán Carmona, Rui Xia, Maria Cristina Momblona Rincón

One of the obstacles to the commercialization of perovskite solar cells (PSCs) is the high price and morphological instability of the most common hole-transporting material (HTM) Spiro-OMeTAD. Herein, a novel HTM, termed V1160, based on four N,N '-bis(3-me ...

WILEY-V C H VERLAG GMBH2019

Metal-Sulfide Catalysts Derived from Lignosulfonate and their Efficient Use in Hydrogenolysis

Paul Joseph Dyson, Zhaofu Fei, Xile Hu, Antoine Philippe Van Muyden, Lichen Bai, Sijie Liu, Xinjiang Cui, Xiang Li

Catalytic lignosulfonate valorization is hampered by the in situ liberation of sulfur that ultimately poisons the catalyst. To overcome this limitation, metal sulfide catalysts were developed that are able to cleave the C-O bonds of lignosulfonate and are ...

2019

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