scholarly journals Role of Dopants on the Local Electronic Structure of Polymeric Carbon Nitride Photocatalysts

Small Methods ◽  
2020 ◽  
pp. 2000707
Author(s):  
Jian Ren ◽  
Lihua Lin ◽  
Klaus Lieutenant ◽  
Christian Schulz ◽  
Deniz Wong ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Carbon Nitride ◽  
Local Electronic Structure ◽  
Polymeric Carbon

Role of defects in BiFeO3 multiferroic films and their local electronic structure by x-ray absorption spectroscopy

2014 ◽  
Vol 116 (15) ◽  
pp. 153701 ◽  
Author(s):  
Ashish Ravalia ◽  
Megha Vagadia ◽  
P. S. Solanki ◽  
S. Gautam ◽  
K. H. Chae ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Multiferroic Films ◽  
Local Electronic Structure ◽  
X Ray Absorption

scholarly journals Exploring the role of electronic structure on photo-catalytic behavior of carbon-nitride polymorphs

Carbon ◽  
2020 ◽  
Vol 168 ◽  
pp. 125-134 ◽  
Author(s):  
Sujoy Datta ◽  
Prashant Singh ◽  
Debnarayan Jana ◽  
Chhanda B. Chaudhuri ◽  
Manoj K. Harbola ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Carbon Nitride ◽  
Catalytic Behavior

Energy gap engineering of polymeric carbon nitride nanosheets for matching with NaYF4:Yb,Tm: enhanced visible-near infrared photocatalytic activity

2016 ◽  
Vol 52 (3) ◽  
pp. 453-456 ◽  
Author(s):  
Xuefeng Li ◽  
Hao Ren ◽  
Zhijuan Zou ◽  
Jiaojiao Sun ◽  
Jingyu Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Photocatalytic Activity ◽  
Carbon Nitride ◽  
Near Infrared ◽  
Energy Gap ◽  
Emission Energy ◽  
Highly Efficient ◽  
Carbon Nitride Nanosheets ◽  
Polymeric Carbon

A highly efficient visible-NIR photocatalyst: the electronic structure of CN nanosheets is engineered to match well with the emission energy of UCPs.

scholarly journals A Study in Red: The Overlooked Role of Azo-Moieties in Polymeric Carbon Nitride Photocatalysts with Strongly Extended Optical Absorption

2021 ◽  
Author(s):  
Dariusz Mitoraj ◽  
Igor Krivtsov ◽  
Chunyu Li ◽  
Ashwene Rajagopal ◽  
Changbin Im ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Carbon Nitride ◽  
Polymeric Carbon

Insight into the role of Ni–Fe dual sites in the oxygen evolution reaction based on atomically metal-doped polymeric carbon nitride

2019 ◽  
Vol 7 (23) ◽  
pp. 14001-14010 ◽  
Author(s):  
Chuchu Wu ◽  
Xiaoming Zhang ◽  
Zhangxun Xia ◽  
Miao Shu ◽  
Huanqiao Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Carbon Nitride ◽  
Dual Metal ◽  
Metal Doped ◽  
Polymeric Carbon ◽  
Insight Into

Ni–Fe dual-metal sites on NiFe-codoped polymeric carbon nitride co-participate in the OER process leading to significantly enhanced electrocatalytic activity.

EELS Measurement of the Local Electronic Structure of Copper Atoms Segregated to Aluminum Grain Boundaries

1996 ◽  
Vol 54 ◽  
pp. 342-343
Author(s):  
S.J. Splinter ◽  
J. Bruley ◽  
P.E. Batson ◽  
D.A. Smith ◽  
R. Rosenberg
Keyword(s):  
Electronic Structure ◽  
Grain Boundaries ◽  
Boundary Segregation ◽  
Thin Layers ◽  
Nominal Composition ◽  
Spatially Resolved ◽  
Service Lifetime ◽  
Heat Treated ◽  
Probe Size ◽  
Local Electronic Structure

It has long been known that the addition of Cu to Al interconnects improves the resistance to electromigration failure. It is generally accepted that this improvement is the result of Cu segregation to Al grain boundaries. The exact mechanism by which segregated Cu increases service lifetime is not understood, although it has been suggested that the formation of thin layers of θ-CuA12 (or some metastable substoichiometric precursor, θ’ or θ”) at the boundaries may be necessary. This paper reports measurements of the local electronic structure of Cu atoms segregated to Al grain boundaries using spatially resolved EELS in a UHV STEM. It is shown that segregated Cu exists in a chemical environment similar to that of Cu atoms in bulk θ-phase precipitates.Films of 100 nm thickness and nominal composition Al-2.5wt%Cu were deposited by sputtering from alloy targets onto NaCl substrates. The samples were solution heat treated at 748K for 30 min and aged at 523K for 4 h to promote equilibrium grain boundary segregation. EELS measurements were made using a Gatan 666 PEELS spectrometer interfaced to a VG HB501 STEM operating at 100 keV. The probe size was estimated to be 1 nm FWHM. Grain boundaries with the narrowest projected width were chosen for analysis. EDX measurements of Cu segregation were made using a VG HB603 STEM.

Sign in / Sign up

Export Citation Format

Share Document