A “uniform” heterogeneous photocatalyst: integrated p–n type CuInS2/NaInS2 nanosheets by partial ion exchange reaction for efficient H2 evolution

2015 ◽  
Vol 51 (45) ◽  
pp. 9381-9384 ◽  
Author(s):  
Peng Hu ◽  
Chee Keong Ngaw ◽  
Yee Yan Tay ◽  
Shaowen Cao ◽  
James Barber ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
H2 Evolution ◽  
Single Crystalline ◽  
Ion Exchange Reaction ◽  
Cation Exchange Reaction

Single-crystalline-like p–n type CuInS2/NaInS2 heterogeneous nanosheets were synthesized by partial cation exchange reaction.

scholarly journals Scalable fabrication of high-quality crystalline and stable FAPbI3 thin films by combining doctor-blade coating and the cation exchange reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (13) ◽  
pp. 5989-5997 ◽  
Author(s):  
Sampson Adjokatse ◽  
Hong-Hua Fang ◽  
Herman Duim ◽  
Maria Antonietta Loi
Keyword(s):  
Thin Films ◽  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
High Quality ◽  
Coating Technique ◽  
Doctor Blade ◽  
Ion Exchange Reaction ◽  
Cation Exchange Reaction ◽  
Blade Coating

This study highlights the importance of a scalable blade coating technique and the ion exchange reaction in fabricating high-quality perovskite thin films.

scholarly journals Substitution of Ca2+ in Calcite by Sn2+ and Sr2+ cations through ion exchange characterized by X-ray absorption and photoelectron spectroscopies

MRS Advances ◽  
2021 ◽  
Author(s):  
Jonathan B. Junio ◽  
Prae Chirawatkul ◽  
Marlon T. Conato ◽  
Candy C. Mercado
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
Exchange Process ◽  
X Ray ◽  
Exchange Transformation ◽  
Ion Exchange Process ◽  
Cation Exchange Reaction ◽  
Carbonate Material ◽  
X Ray Absorption

AbstractTin (Sn2+) and strontium (Sr2+), two potential alternatives to lead (Pb2+) in perovskite formation, were explored in transforming calcium carbonate (CaCO3) into a leaving group in a cation exchange reaction. This is the first part of a sequential ion exchange process in transforming calcite into a Pb-free perovskite material for perovskite solar cell applications. Calcite, a polymorph of CaCO3, was successfully transformed into strontianite (SrCO3) through a cation exchange reaction. In the Sn substitution reaction on the other hand, no SnCO3 formation was noted. Instead, oxides of Sn were formed. The wider spaces in between Ca2+ cations in (100) orientation account for the higher atomic Sn2+ and Sr2+ concentrations as compared to (001) orientation, where the cation movement is restricted. X-ray absorption and photoelectron spectroscopies were used to investigate the ion-exchange transformation of calcite towards the formation of an intermediate carbonate material. Graphic abstract

Controllable synthesis of Bi2S3/CuS heterostructures by an in situ ion-exchange solvothermal process and their enhanced photocatalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103215-103223 ◽  
Author(s):  
Yu-Qiao Zhang ◽  
Shun Li ◽  
Bo-Ping Zhang
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Solvothermal Process ◽  
Controllable Synthesis ◽  
Cation Exchange Reaction ◽  
Hybrid Photocatalyst

A novel Bi2S3/CuS hybrid photocatalyst with a 3D hierarchical configuration was synthesized through an in situ solution-based cation exchange reaction that leads to obvious enhancements in charge separation and photocatalytic performance.

Synthesis of (H3O)TiNbO5·0.26H2O via hydronium (H3O+) ion-exchange reaction and its photocatalytic activity for H2 evolution from aqueous methanol solution

2000 ◽  
Vol 2 (19) ◽  
pp. 4461-4464 ◽  
Author(s):  
Hiroyuki Takahashi ◽  
Masato Kakihana ◽  
Yohichi Yamashita ◽  
Kiyohide Yoshida ◽  
Sigeru Ikeda ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ion Exchange ◽  
Exchange Reaction ◽  
Methanol Solution ◽  
H2 Evolution ◽  
Aqueous Methanol ◽  
Ion Exchange Reaction

Quantification of Exchangeable Cations in Interlayer of Tsukinuno Sodium-Montmorillonite

2009 ◽  
Vol 1193 ◽  
Author(s):  
Haruo Sato
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Exchangeable Cations ◽  
Initial Material ◽  
Ion Exchange Reaction ◽  
Reaction Constant ◽  
Good Agreement

AbstractIn this study, the cation exchange capacity (CEC) and leached exchangeable cations (LC) of montmorillonite purified from bentonite produced in the Tsukinuno bentonite mine, Yamagata, Japan, were measured, and the exchangeable cations in the interlayer of the montmorillonite were discussed. A montmorillonite, in which the soluble minerals were completely removed, was prepared. Kunipia-F and Kunipia-P, for which both bentonites originally contain approximately 100 wt.% montmorillonite, were used as the initial material. All of the measurements were carried out in a N2 atmosphere-controlled glove-box.The CEC values of montmorillonites for both bentonites (100-110 meq/100g) were similar to data conventionally reported, and the sum of LC was also approximately in good agreement with the CEC values. The share of Na+ in the interlayer of montmorillonite calculated from the LC was about 3/4 of the sum of the LC (≍ CEC), and Mg2+ and Ca2+ occupied about 7 and 19 %, respectively. Although montmorillonite in bentonite produced in the Tsukinuno bentonite mine is known as a Na type, the sum of Ca2+ and Mg2+ occupied about 26 % of all exchangeable cations in the interlayer. Based on these data, the ion exchange reaction constant between Na+ and H+ in the interlayer of montmorillonite was calculated to be -0.07. This is nearly 2 orders of magnitude lower than data that are usually adopted.

scholarly journals Heat of Ion Exchange Reaction as Determined by Means of Flow Micro-Calorimetry. I. Cation Exchange in Aqueous System

1976 ◽  
Vol 49 (9) ◽  
pp. 2374-2376
Author(s):  
Tetsuo Morimoto ◽  
Hiromitu Naono ◽  
Kuniji N\={o}so ◽  
Yasumasa Shigetomi
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Reaction ◽  
Aqueous System ◽  
Ion Exchange Reaction

Photoassisted Production of O2-• and H2 in Aqueous Medium Stimulated by Polythiophene in ZSM-5 Zeolite Channels

1999 ◽  
Vol 64 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Gabriel Čík ◽  
František Šeršeň ◽  
Alena Bumbálová
Keyword(s):  
Reactive Oxygen Species ◽  
Ion Exchange ◽  
Visible Light ◽  
Aqueous Medium ◽  
Exchange Reaction ◽  
Epr Spectroscopy ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Water Reduction ◽  
Ion Exchange Reaction

The formation of reactive oxygen species due to irradiation by a visible light of the polythiophene deposited in ZSM-5 zeolite channels in aqueous medium has been studied. Polymerization of thiophene was carried out in zeolite channels after the ion-exchange reaction of Na+ for Fe3+. By means of EPR spectroscopy, the temporarily generated 1O2 in irradiated aqueous medium was proved. The formation of O2-• was confirmed by the reduction of Fe3+-cytochrome c. Irradiation led to the water reduction to hydrogen.

Insight into the enhanced photocatalytic properties of AgBr/Ag4P2O7 composites synthesized via in situ ion exchange reaction

2021 ◽  
Vol 9 (1) ◽  
pp. 104889
Author(s):  
Wyllamanney da S. Pereira ◽  
Fabrício B. Destro ◽  
Cipriano B. Gozzo ◽  
Edson R. Leite ◽  
Júlio C. Sczancoski
Keyword(s):  
Ion Exchange ◽  
Exchange Reaction ◽  
Photocatalytic Properties ◽  
Ion Exchange Reaction ◽  
Insight Into

scholarly journals Possibility of Superconductivity in a Layered Perovskite Niobate, KCa2Nb3O10, Synthesized by an Ion Exchange Reaction

2006 ◽  
Vol 114 (1334) ◽  
pp. 861-865 ◽  
Author(s):  
Sachi TAKEZAWA ◽  
Takashi TERANISHI ◽  
Hironori ISHIKAWA ◽  
Toshiaki TOKUMITSU ◽  
Kenji TODA ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Exchange Reaction ◽  
Layered Perovskite ◽  
Ion Exchange Reaction
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