Phytochemical assisted synthesis of size and shape tunable gold nanoparticles and assessment of their catalytic activities

Abstract

A faster and environmentally viable phytochemical assisted reduction method of synthesizing catalytically active gold nanoparticles (GNPs) is reported.

Green chemical synthesis of Pd nanoparticles for use as efficient catalyst in Suzuki‐Miyaura cross‐coupling reaction

“…The amount of total phenolics in the flower extract of Lantana Camara plants were determined with the Folin-Ciocalteu reagent using gallic acid as a standard following our previously reported method. [25] A calibration curve was plotted (R 2 = 0.994) with the series of gallic acid standards from which the total phenolic contents values were determined. Results are expressed as mg of gallic acid equivalents (GAE).…”

“…Also it is reported that polyphenolics can be extracted efficiently using water as extracting solvent which also increases the versatility of the process as it further minimizes the use of toxic solvents . The polyphenolics act as better green reducing agents for noble metal and other transition metal ions . Considering these aspects, we believe that the use of flower extract of Lantana camara as reducing‐cum‐stabilizing agent for the preparation of Pd NPs can provide a new platform to this noxious plant making it a value‐added weed for nanotechnology‐based industries in future.…”

“…Hence, there is immense interest in recent years in developing environmentally friendly and sustainable methods for the synthesis of Pd NPs. In this regard, the biogenic method involving plant extract has received considerable attention because; such methods are considered to be very effective in developing a rapid, clean, nontoxic, and eco‐friendly technology . Another advantage associated with the use of plant extract is that no additional capping agent or stabilizer is required as phytochemicals present in the plant extract or their by‐product formed during reaction stabilize the formed Pd NPs .…”

“…In this regard, the biogenic method involving plant extract has received considerable attention because; such methods are considered to be very effective in developing a rapid, clean, nontoxic, and eco-friendly technology. [23][24][25][26][27] Another advantage associated with the use of plant extract is that no additional capping agent or stabilizer is required as phytochemicals present in the plant extract or their by-product formed during reaction stabilize the formed Pd NPs. [28,29] Additionally, the phytochemicals are also useful in controlling the size and shape of Pd NPs.…”

“…[36] The polyphenolics act as better green reducing agents for noble metal and other transition metal ions. [25,26,37] Considering these aspects, we believe that the use of flower extract of Lantana camara as reducing-cum-stabilizing agent for the preparation of Pd NPs can provide a new platform to this noxious plant making it a value-added weed for nanotechnology-based industries in future. So, we report in this manuscript a fast, low-cost and environmentally safe synthesis method for Pd NPs using phytochemicals present in flower extract of Lantana camara plant both as reducing and capping agent.…”