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Since India is one of the most populated countries in the world, there is a constant increase in the demand for food supply. To cater to the increased demand, the farmers use agrochemicals for crop protection and to enhance crop yield. Prolonged use of these agrochemicals, contaminates the groundwater, soil, and air, causing damage to our ecosystem and having adverse effects on human health. The present study reports the one‐pot synthesis of graphene‐CdS (GC) nanocomposites by a facile thermal decomposition approach. Thermal decomposition is an easy and cost‐effective technique. It's a facile and more efficient method than other methods. The synthesized graphene‐CdS nanocomposites were characterized using XRD, FT‐IR spectroscopy, Diffuse Reflectance Spectroscopy, RAMAN spectroscopy, and FE‐SEM analysis. The potential of GC nanocomposites has been explored as an efficient photocatalyst for the degradation of chlorpyrifos (CPY) in an aqueous solution. It was observed that the nanocomposites exhibit 89 % degradation efficiency in 90 minutes compared to the pristine CdS and Graphene. A detailed investigation of the degradation pathway and scavenger studies were also conducted. The Graphene‐CdS hold scope and potential to be explored as an effective photocatalyst for the mineralization of agrochemicals. [ABSTRACT FROM AUTHOR]

The rapid development of the industrial world causes wastewater containing dyes to continue to increase. Even in recent years, the food, textile, cosmetic, plastic, and printing industries have developed the use of dyes. Methylene blue (MB) is one of the cationic dyes widely used in dyeing silk, wood, and cotton because of its absorbency and good fastness to materials. The adsorption process is the best technique and preferred in removing dyes from wastewater due to excellent selectivity, high efficiency from high-quality treated effluent, flexibility in design, and simplicity. Therefore, there is a growing interest to identify low-cost alternative adsorbents that have reasonable adsorption efficiency, especially natural materials such as leaves. In this study, research on MB adsorption using leaves was analyzed using bibliometric analysis. Information of bibliometric is extracted from the Scopus database with the keyword "Methylene Blue", "Adsorption or Desorption", and "Leaves or leaf". The results showed that India, Desalination and Water Treatment, and SASTRA Deemed University were the country, journal, and institution that contributed the most publications on this topic. Therefore, it is expected that with the use of bibliometrics, the use of leaf-based MB adsorption processes in their potential for MB dye removal can be investigated especially for large-scale development. [Display omitted] • Adsorption is more promising for large-scale development than photocatalytic degradation. • Adsorbent based on leaves needs further research, especially from a techno-economic perspective. • The first bibliometric study on MB adsorption using leaves was reported. • The high frequency of "adsorption" and "methylene blue" for the research hotspot. [ABSTRACT FROM AUTHOR]