New insights into the mechanism of H2 generation through NaBH4 hydrolysis on Co-based nanocatalysts studied by differential reaction calorimetry

A mixture of phosphoric and sulfuric acid was used to investigate the dissolution kinetics of phosphate ore by Differential Reaction Calorimetry (DRC). The effect of the solid-to-iquid ratio, concentration, stirring speed, particle size and temperature of the reaction is examined. It was established that the dissolution rate increased with stirring speed and particle size. However, rising the olid-to-iquid ratio, temperature and concentration decreased the dissolution rate. It was determined that the dissolution rate fits in the first order of the pseudo-homogeneous reaction model. Two negative values of apparent activation energies were found in the range of 25 to 60?C. The experimental data were tested by graphical and statistical methods and it was found that the following models were best fitted for the experimental data and an empirical equation for the process was developed. -ln (1 ? x) = [2,2 E-09((S/L)0.75C -0.461G0.447(SS) 0.471exp (2671/T)]t. T? 40?C -ln (1 ? x) = [2,2 E-09((S/L)0.75C -0.461G0.447(SS) 0.471exp (6959/T)]t. T > 45?C

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Efficient spatial charge separation in unique 2D tandem heterojunction CdxZn1−xIn2S4–CdS–MoS2 rendering highly-promoted visible-light-induced H2 generation

Journal of Materials Chemistry A ◽

10.1039/d0ta10564c ◽

2021 ◽

Vol 9 (1) ◽

pp. 482-491

Author(s):

Jiakun Wu ◽

Bowen Sun ◽

Hui Wang ◽

Yanyan Li ◽

Ying Zuo ◽

...

Keyword(s):

Visible Light ◽

Charge Separation ◽

Effective Charge ◽

Active Sites ◽

H2 Generation ◽

Highly Efficient ◽

Spatial Charge

Unique 2D heterostructures CdxZn1−xIn2S4–CdS–MoS2 with effective charge separation, excellent light-harvest, and abundant active sites are highly-efficient for photocatalytic H2 evolution.

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Alkylamine-Grafted Organic Semiconductors with Plasma-Induced Defects as Electron Promoters of CO-Resistant Pd-Based Nanoparticles for Efficient Light-Driven On-Demand H2 Generation

ACS Applied Energy Materials ◽

10.1021/acsaem.0c02583 ◽

2021 ◽

Author(s):

Guofang Huang ◽

Xiaojun Gu ◽

Dong Wang ◽

Dongmin Wu ◽

Hao Zhang ◽

...

Keyword(s):

Organic Semiconductors ◽

H2 Generation ◽

On Demand ◽

Induced Defects

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Hot injection induced synthesis of ZnCdS-rGO/MoS2 heterostructures for efficient hydrogen production and CO2 photoreduction

Chemical Communications ◽

10.1039/d1cc02292j ◽

2021 ◽

Author(s):

Amit Gautam ◽

Saddam Sk ◽

Amritanjali Tiwari ◽

Moses Abraham Bokinala ◽

P. Vijayanand ◽

...

Keyword(s):

Hydrogen Production ◽

Generation Rate ◽

Co2 Photoreduction ◽

H2 Generation ◽

Highly Efficient ◽

Hot Injection ◽

And Control

A highly efficient hybrid ZnCdS-rGO/MoS2 heterostructure is successfully synthesized through a hot injection approach and control loading of rGO/MoS2. The synergism provides an unprecedently high H2-generation rate 193.4 mmol H2...

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