Nanoscale, conformal films of graphitic carbon nitride deposited at room temperature: a method for construction of heterojunction devices

Nanoscale
Satyam A LadvaRobert G Palgrave

Abstract

Graphitic carbon nitrides (GCNs) represent a family of 2D materials composed of carbon and nitrogen with variable amounts of hydrogen, used in a wide variety of applications. We report a method of room temperature thin film deposition which allows ordered GCN layers to be deposited on a very wide variety of substrates, including conductive glass, flexible plastics, nanoparticles and nano-structured surfaces, where they form a highly conformal coating on the nanoscale. Film thicknesses of below 20 nm are achievable. In this way we construct functional nanoscale heterojunctions between TiO2 nanoparticles and GCN, capable of producing H2 photocatalytically under visible light irradiation. The films are hydrogen rich, have a band gap around 1.7 eV, display transmission electron microscopy lattice fringes as well as X-ray diffraction peaks despite being deposited at room temperature, and show characteristic Raman and IR bands. We use cluster etching to reveal the chemical environments of C and N in GCN using X-ray photoelectron spectroscopy. We elucidate the mechanism of this deposition, which operates via sequential surface adsorption and reaction analogous to atomic layer deposition. The mechanism may have implications for current...Continue Reading

References

Dec 29, 2006·Faraday Discussions·Clifford N Matthews, Robert D Minard
Apr 7, 2007·Chemistry : a European Journal·Bettina V Lotsch, Wolfgang Schnick
Jul 30, 2008·Chemistry : a European Journal·Michael J BojdysArne Thomas
Nov 11, 2008·Nature Materials·Xinchen WangMarkus Antonietti
Dec 2, 2009·Chemical Reviews·Steven M George
Jan 24, 2013·Angewandte Chemie·Katharina SchwinghammerBettina V Lotsch
Apr 29, 2014·Nature Communications·Yao ZhengShi Zhang Qiao
May 20, 2014·Angewandte Chemie·Gerardo Algara-SillerMichael J Bojdys
Sep 13, 2014·ACS Applied Materials & Interfaces·Junjiang ZhuSónia A C Carabineiro
Nov 20, 2014·Nanoscale·Zaiwang ZhaoFan Dong
Jan 31, 2015·Journal of the American Chemical Society·Zhixin ZhouYuanjian Zhang
Apr 3, 2015·Angewandte Chemie·Jinshui ZhangXinchen Wang
Jun 9, 2017·Physical Chemistry Chemical Physics : PCCP·T S MillerP F McMillan
Jul 6, 2017·Nano Letters·Thomas S MillerChristopher A Howard
Jul 16, 2017·Angewandte Chemie·Honghui OuXinchen Wang

❮ Previous
Next ❯

Citations

Apr 30, 2019·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Paul F McMillan
Sep 1, 2019·Nanomaterials·Hossein Dizajghorbani-AghdamPaul F McMillan
Oct 8, 2020·Frontiers in Chemistry·Raul Quesada-Cabrera, Ivan P Parkin

❮ Previous
Next ❯

Methods Mentioned

BETA
scanning electron microscopy
X-ray
electron microscopy

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.