scholarly journals Graphitic carbon nitride embedded-Ag nanoparticle decorated-ZnWO4 nanocomposite based photoluminescence sensing of Hg2+

2021 ◽  
Author(s):  
Uday Kumar Ghorui ◽  
Jit Satra ◽  
Papri Mondal ◽  
Sourav Mardanya ◽  
Arpita Sarkar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Adverse Effects ◽  
Soil Water ◽  
Metal Ion ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Heavy Metal Ion ◽  
Ag Nanoparticle ◽  
Ion Toxicity

The adverse effects of the advancement of civilization have upset the environment significantly by heavy metal ion toxicity, empoisoning of soil, water, food, etc. In this work, Ag loaded metal...

scholarly journals A bromine-catalysis-synthesized poly(3,4-ethylenedioxythiophene)/graphitic carbon nitride electrochemical sensor for heavy metal ion determination

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34691-34698 ◽  
Author(s):  
Wei Wu ◽  
Ahmat Ali ◽  
Ruxangul Jamal ◽  
Mihray Abdulla ◽  
Tursunnisahan Bakri ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Electrochemical Sensor ◽  
Metal Ion ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Heavy Metal Ion ◽  
Polymerization Method ◽  
Catalyzed Polymerization

The PEDOT/g-C3N4 composite prepared by a Br2-catalyzed polymerization method exhibited the widest linear electrochemical responses for Cd2+ and Pb2+.

scholarly journals Review—Recent Advances in Nanostructured Graphitic Carbon Nitride as a Sensing Material for Heavy Metal Ions

2020 ◽  
Vol 167 (3) ◽  
pp. 037519 ◽  
Author(s):  
Rafiq Ahmad ◽  
Nirmalya Tripathy ◽  
Ajit Khosla ◽  
Marya Khan ◽  
Prabhash Mishra ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Recent Advances ◽  
Sensing Material

scholarly journals Graphitic Carbon Nitride (C3N4) Reduces Cadmium and Arsenic Phytotoxicity and Accumulation in Rice (Oryza sativa L.)

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 839
Author(s):  
Chuanxin Ma ◽  
Yi Hao ◽  
Jian Zhao ◽  
Nubia Zuverza-Mena ◽  
Ahmed G. Meselhy ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Oryza Sativa ◽  
Carbon Nitride ◽  
Dna Analysis ◽  
Oryza Sativa L ◽  
Random Amplified Polymorphic Dna ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Metal Exposure ◽  
Shoot Biomass

The present study investigated the role of graphitic carbon nitride (C3N4) in alleviating cadmium (Cd)- and arsenic (As)-induced phytotoxicity to rice (Oryza sativa L.). A high-temperature pyrolysis was used to synthesize the C3N4, which was characterized by transmission electron microscopy, Fourier-transform infrared spectroscopy, and dynamic light scattering. Rice seedlings were exposed to C3N4 at 50 and 250 mg/L in half-strength Hoagland’s solution amended with or without 10 mg/L Cd or As for 14 days. Both Cd and As alone resulted in 26–38% and 49–56% decreases in rice root and shoot biomass, respectively. Exposure to 250 mg/L C3N4 alone increased the root and shoot fresh biomass by 17.5% and 25.9%, respectively. Upon coexposure, Cd + C3N4 and As + C3N4 alleviated the heavy metal-induced phytotoxicity and increased the fresh weight by 26–38% and 49–56%, respectively. Further, the addition of C3N4 decreased Cd and As accumulation in the roots by 32% and 25%, respectively, whereas the metal contents in the shoots were 30% lower in the presence of C3N4. Both As and Cd also significantly altered the macronutrient (K, P, Ca, S, and Mg) and micronutrient (Cu, Fe, Zn, and Mn) contents in rice, but these alterations were not evident in plants coexposed to C3N4. Random amplified polymorphic DNA analysis suggests that Cd significantly altered the genomic DNA of rice roots, while no difference was found in shoots. The presence of C3N4 controlled Cd and As uptake in rice by regulating transport-related genes. For example, the relative expression of the Cd transporter OsIRT1 in roots was upregulated by approximately threefold with metal exposure, but C3N4 coamendment lowered the expression. Similar results were evident in the expression of the As transporter OsNIP1;1 in roots. Overall, these findings facilitate the understanding of the underlying mechanisms by which carbon-based nanomaterials alleviate contaminant-induced phyto- and genotoxicity and may provide a new strategy for the reduction of heavy metal contamination in agriculture.

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