Sustainable Photocatalytic Degradation of Methylene Blue Using Biochar-LDH Nanocomposite

Описание: This video presents a detailed experimental demonstration and analysis of photocatalytic degradation of methylene blue (MB) dye using a Biochar–Layered Double Hydroxide (Biochar-LDH) composite material as an efficient and sustainable photocatalyst.
The study focuses on advanced wastewater treatment concepts, highlighting how biochar-based hybrid photocatalysts can be employed for the removal of persistent organic dyes under light irradiation.
🔬 What This Video Covers
✔ Preparation and utilization of Biochar-LDH photocatalyst
✔ Experimental setup for photocatalytic degradation of methylene blue
✔ Use of UV–Vis spectrophotometer (6000 series) for concentration analysis
✔ Step-by-step explanation of absorbance measurement at λmax ≈ 664 nm
✔ Monitoring time-dependent degradation behavior
✔ Calculation of degradation efficiency (%)
✔ Discussion on photocatalytic reaction mechanism
✔ Role of biochar support in enhancing charge separation and adsorption
🔬 Instrumentation & Analysis
UV–Visible Spectrophotometer: 6000 series
Dye Studied: Methylene Blue (MB)
Measurement Principle: Beer–Lambert Law
Key Output: Absorbance decay → concentration reduction → degradation efficiency
The UV–Vis spectra were recorded at regular time intervals to evaluate the photocatalytic performance of the Biochar-LDH composite, allowing precise quantification of dye degradation under irradiation.
🌱 Why Biochar-LDH?
Biochar-LDH composites offer:
High surface area and adsorption capacity
Improved photocatalytic activity
Enhanced electron–hole separation
Sustainable, low-cost, and environmentally friendly materials
This makes them highly suitable for real-world wastewater treatment applications, especially for textile and industrial dye removal.
📊 Applications & Relevance
✔ Environmental Engineering
✔ Water & Wastewater Treatment
✔ Photocatalysis & Advanced Oxidation Processes (AOPs)
✔ Sustainable Materials & Green Technology
✔ Academic Research & Laboratory Demonstration