Related Experiment Video
Updated: Jan 23, 2026

09:58
Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
12.2K
Efficient visible-light driven N2 fixation over two-dimensional Sb/TiO2 composites.
Zhenqing Zhao1, Song Hong1, Chao Yan2
1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China. sunzy@mail.buct.edu.cn.
Summary
Researchers developed novel 2D Sb/TiO2 nanocomposites for efficient visible-light ammonia production from nitrogen and water. This sustainable method shows promise for photochemical ammonia synthesis under ambient conditions.
Area of Science:
- Materials Science
- Photochemistry
- Catalysis
Background:
- Photochemical ammonia production is challenging under ambient conditions.
- Sustainable ammonia synthesis is crucial for agriculture and industry.
Purpose of the Study:
- To develop efficient visible-light-driven photocatalysts for ammonia production.
- To explore the use of novel two-dimensional (2D) nanocomposites for nitrogen fixation.
Main Methods:
- Synthesis of two-dimensional (2D) Sb/TiO2 nanocomposites.
- Photochemical reaction of N2 to NH3 in water under visible light irradiation.
- Quantification of ammonia formation rate.
Main Results:
- The Sb/TiO2 nanocomposites demonstrated efficient visible-light fixation of N2 to NH3.
- A remarkable ammonia formation rate of approximately 20.8 μmol h-1 g-1 was achieved.
- The materials show significant promise for sustainable ammonia production.
Conclusions:
- Novel 2D Sb/TiO2 nanocomposites are effective for photochemical ammonia synthesis.
- This approach offers a sustainable pathway for ammonia production under ambient conditions.
- The developed materials hold potential for future applications in green chemistry and energy.
Related Concept Videos
Classifying Matter by Composition
89.9K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
89.9K
Fixation and Sectioning
7.5K
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
7.5K
Light Acquisition
9.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.4K
Light as Energy
95.6K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
95.6K
Carbon-dioxide Fixation
678
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
678
The Wave Nature of Light
61.0K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.0K

