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Nano-NiO (Nickel Oxide nanoparticles) are

highly effective catalysts used in various reactions like biomass conversion (tar removal, pyrolysis), CO2 methanation, and hydrogenation , showing superior performance over bulk materials due to their high surface area and unique morphology (nanoflowers, sheets, spheres). These nanoparticles offer improved efficiency in green energy processes, allowing for lower operating temperatures, better product yields (like H2/CO in gasification), and enhanced selectivity, often prepared via eco-friendly methods like sol-gel or pulsed laser ablation .

Key Catalytic Applications & Benefits:

Biomass Conversion: Significantly reduces tar in gasification and lowers decomposition temperatures in pyrolysis, boosting valuable gas production (H2, CO).
CO2 Methanation : High selectivity for methane production, with specific shapes like discs or spheres yielding excellent conversion rates.
Hydrogenation Reactions : Efficient for converting nitrophenols to amides, especially with Ni/NiO nanocomposites or Mn/Co substituted NiO .
Hydrogen Evolution Reaction (HER): Nanoporous Ni/NiO catalysts show excellent stability and low overpotentials for water splitting.
Methane Oxidation : Nano-sheet NiO catalysts exhibit rival activity to precious metal catalysts for deep methane oxidation, with good water resistance.

Advantages of Nanoscale vs. Bulk (Micro) NiO:

Higher Surface Area: Nano-NiO has much greater surface area, providing more active sites for reactions.
Lower Activation Energy: Requires less energy to start reactions, lowering operating temperatures.
Morphology Dependence: Activity is highly influenced by shape (spheres, sheets, etc.) and crystal structure, with unique facets exposing more active sites.
Superior Activity: Generally outperforms micro-sized NiO in catalysis due to these nanoscale effects.

Synthesis Methods:

Homogeneous precipitation , sol-gel/auto-combustion , pulsed laser ablation in liquid (PLAL) , and dealloying are common techniques, often focusing on green chemistry principles.

Development of nano-niO/Al2O3 catalyst to be used for tar removal ...
2008年8月14日 — The results showed thatthe prepared nano-NiO/gamma...

National Institutes of Health (.gov)
Porous NiO nano-sheet as an active and stable catalyst for CH4 ...

ScienceDirect.com
NiO Nano- and Microparticles Prepared by Solvothermal Method- ...
2024年10月11日 — Abstract. Nickel oxide (NiO) is one of the most p...

National Institutes of Health (.gov)

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NiO Nano- and Microparticles Prepared by Solvothermal ...

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › PMC11510583

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › PMC11510583

· 翻译此页

作者：A Bikbashev 2024 被引用次数：1 — Nickel oxide (NiO) is one of the most popular hydrogenation catalysts . In heterogeneous catalysis, nickel oxide is used, for example, ...

Nanocatalyst - an overview | ScienceDirect Topics

ScienceDirect.com

https://www.sciencedirect.com › topics › nanocatalyst

ScienceDirect.com

https://www.sciencedirect.com › topics › nanocatalyst

What are NiO nanoparticles?

Introduction. Nickel oxide NiO is an important transition metal oxide with cubic lattice structure . It has attracted increasing attention owing to potential use in a variety of applications such as: catalysis [1], battery cathodes [2], [3], gas sensors [4], electrochromic films [5] and magnetic materials [6], [7].

Nickel oxide nanoparticles: Synthesis and spectral studies of interactions ...

ScienceDirect.com

https://www.sciencedirect.com › science › article › pii

ScienceDirect.com

https://www.sciencedirect.com › science › article › pii

What is the difference between a catalyst and a Nanocatalyst?

Traditional catalysts generally exhibit lower surface areas, limited reactivity, and reduced durability over repeated use. In contrast, nanocatalysts offer: Higher surface area-to-volume ratio, resulting in more active sites and faster reaction rates. 2025年9月16日

What is a Nanocatalyst? - AZoNano

AZoNano

https://www.azonano.com › article

AZoNano

https://www.azonano.com › article

What is nano catalysis?

Nanocatalysis is defined as a field of catalysis that utilizes nanoparticle catalysts , which exhibit significantly enhanced reactivities and selectivities compared to bulk catalysts.

Nanocatalysis - an overview | ScienceDirect Topics

ScienceDirect.com

https://www.sciencedirect.com › topics › nanocatalysis

ScienceDirect.com

https://www.sciencedirect.com › topics › nanocatalysis

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Nickel Oxide NiO Nanopowder / Nanoparticles (NiO, 99%, ...

US Research Nanomaterials Inc.

https://www.us-nano.com › inc › sdetail

US Research Nanomaterials Inc.

https://www.us-nano.com › inc › sdetail

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Nickel Oxide Nanopowder (NiO ) Applications: Adhesive and coloring agents for enamel; Active optical filters; Antiferromagnetic layers; Automotive rear-view ...

运费：US$25

Highly active and stable nano NiO–MgO catalyst ...

RSC Publishing

https://pubs.rsc.org › content › articlelanding

RSC Publishing

https://pubs.rsc.org › content › articlelanding

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作者：Y Li 2014 被引用次数：129 — Results showed that the NiO–MgO@SiO2 catalyst with a Ni/Mg ratio of 4/1 exhibited the highest catalytic activity (87% conversion for CO2 and 99% selectivity for ...

Nanoporous Ni/NiO catalyst for efficient hydrogen evolution ...

ScienceDirect.com

https://www.sciencedirect.com › abs › pii

ScienceDirect.com

https://www.sciencedirect.com › abs › pii

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作者：L Peng 2022 被引用次数：33 — A hierarchical nanoporous Ni/NiO catalyst with self-supported structures is prepared through dealloying followed by partial electro-oxidation .

Synthesis of Nano NiO-Mo<sub>2</sub>O<sub>3 ... - Sciety

sciety.org

https://sciety.org › preprints202503.1950.v1

sciety.org

https://sciety.org › preprints202503.1950.v1

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2025年3月26日 — This paper reported the synthesis of NiO-Mo2O3 catalyst supported on Al2O3-MgO substrate for selective elimination of sulfur from ...

Preparation of Nano-NiO Particles and Evaluation of Their ...

ACS Publications

https://pubs.acs.org › doi

ACS Publications

https://pubs.acs.org › doi

· 翻译此页

作者：J Li 2008 被引用次数：195 — This study focuses on the preparation of nano-NiO particles and their applications as catalysts in biomass pyrolysis.

Nickel (II) Oxide (20 nm)

Inframat

http://www.inframat.com › products

Inframat

http://www.inframat.com › products

· 翻译此页

Our Nickel (II) Oxide is available in a wide range of quantities and specifications to meet your particular industrial or scientific application.

Superfine Nickel Oxide NiO Nanoparticles Used As Catalyst

Hongwu International Group Ltd

https://www.hwnanomaterial.com › superfi...

Hongwu International Group Ltd

https://www.hwnanomaterial.com › superfi...

· 翻译此页

Application of Ni2O3 Nickelic Oxide nanoparticles : 1. Active optical filters. 2. Adhesives and coloring agents for enamel. 3. Antiferromagnetic layers.

Competitive Price Nickel Oxide Catalyst Nano NiO Powder

Alibaba.com

https://www.alibaba.com › ... › Oxide

Alibaba.com

https://www.alibaba.com › ... › Oxide

· 翻译此页

Competitive price nickel oxide catalyst nano NiO powder . TOPLUS offers high purity, dark green powder with a melting point of 1984℃.

Pulsed laser ablation production of Ni/NiO nano ...

AIP.ORG

https://pubs.aip.org › aip › ape › article › P...

AIP.ORG

https://pubs.aip.org › aip › ape › article › P...

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作者：V Iacono 2023 被引用次数：7 — Ni/NiO nanoparticles (NPs, 2–4 nm in size ) produced by Pulsed Laser Ablation in Liquid (PLAL) are reported as highly efficient and stable electrocatalysts for ...

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NiO Nano- and Microparticles Prepared by Solvothermal ...

Nanocatalyst - an overview | ScienceDirect Topics

Nickel oxide nanoparticles: Synthesis and spectral studies of interactions ...

What is a Nanocatalyst? - AZoNano

Nanocatalysis - an overview | ScienceDirect Topics

Nickel Oxide NiO Nanopowder / Nanoparticles (NiO, 99%, ...

Highly active and stable nano NiO–MgO catalyst ...

Nanoporous Ni/NiO catalyst for efficient hydrogen evolution ...

Synthesis of Nano NiO-Mo<sub>2</sub>O<sub>3 ... - Sciety

Preparation of Nano-NiO Particles and Evaluation of Their ...

Nickel (II) Oxide (20 nm)

Superfine Nickel Oxide NiO Nanoparticles Used As Catalyst

Competitive Price Nickel Oxide Catalyst Nano NiO Powder

Pulsed laser ablation production of Ni/NiO nano ...

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