TY - JOUR
T1 - Green synthesis of CuO nanomaterials and their proficient use for organic waste removal and antimicrobial application
AU - Chauhan, Moondeep
AU - Sharma, Bindu
AU - Kumar, Rajeev
AU - Chaudhary, Ganga Ram
AU - Hassan, Ashraf Aly
AU - Kumar, Sandeep
N1 - Funding Information:
Authors would like to acknowledge the support of UGC, India under INDO-US 21st Century knowledge Initiative project [F.No. 194-2/2016 (IC)]. Moondeep Chauhan is thankful to UGC, Delhi for the fellowships. This work is also supported by PURSE II grant. Sandeep Kumar thanks DST, Govt of India, University of Nebraska (UNL) Lincoln, the Daugherty Water for Food Institute (DWFI), and Indo-US Science and Technology Forum (IUSSTF) for financial support through Water Advanced Research and Innovation (WARI) research grant vide letter No. IUSSTF/WARI/2018/F-029–2018 dated 03-01-2018 along with DST-PURSE sanctioned to GJUS&T, Hisar under PURSE program No. SR/PURSE Phase 2/40(G).
Funding Information:
Authors would like to acknowledge the support of UGC, India under INDO-US 21st Century knowledge Initiative project [F.No. 194-2/2016 (IC)]. Moondeep Chauhan is thankful to UGC, Delhi for the fellowships. This work is also supported by PURSE II grant. Sandeep Kumar thanks DST, Govt of India , University of Nebraska (UNL) Lincoln, the Daugherty Water for Food Institute (DWFI) , and Indo-US Science and Technology Forum (IUSSTF) for financial support through Water Advanced Research and Innovation (WARI) research grant vide letter No. IUSSTF/WARI/2018/F-029–2018 dated 03-01-2018 along with DST-PURSE sanctioned to GJUS&T, Hisar under PURSE program No. SR/PURSE Phase 2/40(G).
Publisher Copyright:
© 2018 Elsevier Inc.
PY - 2019/1
Y1 - 2019/1
N2 - Copper oxide (CuO) nanomaterials (NMs) of different size and morphology were synthesized by Chemical precipitation, Microwave irradiation and Hydrothermal method and characterized by TEM, BET, FTIR, XRD and EDX analysis. As synthesized CuO NMs were utilized for elimination of harmful dyes viz. Direct Red 81 (DR-81) and Coomassie Brilliant blue R-250 (BBR-250) and pathogenic bacteria (Staphylococcus aureus). Owing to their morphology, smaller size and relatively high surface area (40.320 m2 g−1), CuO NMs prepared by chemical precipitation method were observed to show better adsorption capacity for both the dyes (68.70 (DR-81) and 73.04 (BBR-250) mg g−1). The influence of different experimental conditions was studied by the methodical assessments of various parameters such as pH, adsorbent dose, concentration and contact time. Moreover, different adsorption isotherms and pseudo-second order kinetic model were applied to understand the adsorption mechanism. Langmuir model was found to be best fit thus confirming the monolayer adsorption process. To ensure the practical utility of CuO NMs for organic waste removal, the adsorption studies were performed in the presence of different inorganic ions and real water samples. In addition, recovery of the dye and NMs were also carried out effectively by simple method, thus avoiding the secondary pollution. CuO NMs were observed to exhibit significant antibacterial activity against the human pathogenic bacteria. These studies demonstrated that synthesized CuO NMs showed good adsorption efficiency for the removal of harmful dyes and antimicrobial activity against the pathogenic bacteria, which vary as a function of size and surface area.
AB - Copper oxide (CuO) nanomaterials (NMs) of different size and morphology were synthesized by Chemical precipitation, Microwave irradiation and Hydrothermal method and characterized by TEM, BET, FTIR, XRD and EDX analysis. As synthesized CuO NMs were utilized for elimination of harmful dyes viz. Direct Red 81 (DR-81) and Coomassie Brilliant blue R-250 (BBR-250) and pathogenic bacteria (Staphylococcus aureus). Owing to their morphology, smaller size and relatively high surface area (40.320 m2 g−1), CuO NMs prepared by chemical precipitation method were observed to show better adsorption capacity for both the dyes (68.70 (DR-81) and 73.04 (BBR-250) mg g−1). The influence of different experimental conditions was studied by the methodical assessments of various parameters such as pH, adsorbent dose, concentration and contact time. Moreover, different adsorption isotherms and pseudo-second order kinetic model were applied to understand the adsorption mechanism. Langmuir model was found to be best fit thus confirming the monolayer adsorption process. To ensure the practical utility of CuO NMs for organic waste removal, the adsorption studies were performed in the presence of different inorganic ions and real water samples. In addition, recovery of the dye and NMs were also carried out effectively by simple method, thus avoiding the secondary pollution. CuO NMs were observed to exhibit significant antibacterial activity against the human pathogenic bacteria. These studies demonstrated that synthesized CuO NMs showed good adsorption efficiency for the removal of harmful dyes and antimicrobial activity against the pathogenic bacteria, which vary as a function of size and surface area.
KW - Adsorption
KW - Antibacterial activity
KW - Chemical precipitation method
KW - Coomassie Brilliant blue R-250 (BBR-250)
KW - CuO nanomaterials
KW - Direct Red 81 (DR-81)
KW - Hydrothermal method
KW - Microwave irradiation method
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U2 - 10.1016/j.envres.2018.09.024
DO - 10.1016/j.envres.2018.09.024
M3 - Article
C2 - 30278366
AN - SCOPUS:85054078057
SN - 0013-9351
VL - 168
SP - 85
EP - 95
JO - Environmental Research
JF - Environmental Research
ER -