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Hydroboration-Oxidation of Alkenes

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In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.

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Updated: Jun 16, 2025

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis

Published on: January 6, 2016

Boron-doped diamond composites for durable oxygen evolution.

Yalun Ku¹, Kuikui Zhang¹, Ying Guo¹

¹Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou 450052, China.

Journal of Colloid and Interface Science

|August 19, 2024

Summary

This summary is machine-generated.

New boron-doped diamond composites (BDDCs) offer durable and cost-effective oxygen evolution reaction (OER) catalysis. These catalysts show excellent performance, paving the way for advanced energy storage solutions.

Keywords:

Boron-doped diamond Coherent interfaces Electrocatalysis Non-noble-metal-based catalysts Oxygen evolution reaction

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Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Developing efficient, durable, and cost-effective oxygen evolution reaction (OER) catalysts is critical for energy conversion and storage.
Existing noble metal catalysts are expensive and lack long-term stability.
There is a need for alternative OER catalyst materials.

Purpose of the Study:

To prepare and characterize novel boron-doped diamond composites (BDDCs) for OER applications.
To investigate the performance of CoFe and CoFe2C nanoparticles supported by boron-doped diamond (BDD).
To explore the relationship between catalyst structure and OER activity.

Main Methods:

Synthesis of CoFe and CoFe2C nanoparticles supported on BDD particles.
Fabrication of BDDCs via a straightforward annealing process.
Electrochemical characterization of the BDDC catalyst for OER performance.

Main Results:

The BDDC catalyst demonstrated exceptional durability (72 h at 10 mA cm-2).
Achieved a low overpotential of 306 mV at 10 mA cm-2.
Exhibited a modest Tafel slope of 58 mV dec-1.
Identified coherent interfaces between nanoparticles and BDD substrate as crucial for performance.

Conclusions:

The developed BDDCs present a promising alternative to noble metal catalysts for OER.
The straightforward fabrication method and composite structure are key to high performance.
This work may guide the design of future efficient and stable OER catalysts.