ZnO tetrapods and activated carbon based hybrid composite: Adsorbents for enhanced decontamination of hexavalent chromium from aqueous solution

Sharma, Mahima; Joshi, Monika; Nigam, Subhasha; Shree, Sindu; Avasthi, D.K.; Adelung, Rainer; Srivastava, S. K.; Mishra, Yogendra Kumar

doi:10.1016/j.cej.2018.10.031

Cited by 181 publications

(61 citation statements)

References 75 publications

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“…The EMI‐SE values of different stacking layers indicate that the CF fabric/TPU composites prepared in our study possesses excellent EMI shielding properties, which can satisfy the requirements of commercial EMI shielding value of 20 dB. [ 43 ] Besides, It is obvious that the SE T of pure TPU maintains at 0.8–0.9 dB. The low value of SE T means that TPU can be regarded as an electromagnetic wave transparent material.…”

Section: Resultsmentioning

confidence: 79%

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Duan

Shi

Wang

et al. 2020

Macro Materials & Eng

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Electromagnetic shielding materials play a significant role in solving the increasing environmental problem of electromagnetic pollutions. The commonly used metal‐based electromagnetic materials suffer from high density, poor corrosion resistance, and high processing cost. Polymer composites exhibit unique combined properties of lightweight, good shock absorption, and corrosion resistance. In this study, a novel high angle sensitive composite is fabricated by combining carbon fiber (CF) fabric with thermoplastic polyurethane elastomer (TPU). The effect of stacking angle of CF fabric on EMI shielding performance of composite is studied. When the stacking angle of CF fabric changed, the electromagnetic interference (EMI) shielding effectiveness (SE) of CF fabric/TPU composite can reach a maximum of 73 dB, and the tensile strength can reach 168 MPa. In addition, the composite has anisotropic conductivity, which is conductive along the plane direction and nonconductive along the thickness direction. Moreover, the CF fabric/TPU composite manifests exceptional EMI‐SE/density/thickness value of 383 dB cm2 g−1, which is higher than most of current EMI shielding composites reported in literature. In summary, CF fabric/TPU composite is an excellent EMI shielding material that is lightweight, highly flexible, and mechanically robust, which can be applied to the field of aerospace and some intelligent electronic devices.

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Section: Resultsmentioning

confidence: 79%

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Duan

Shi

Wang

et al. 2020

Macro Materials & Eng

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“…The other peak at higher binding energy (532.67 eV) represents surfacechemisorbed -OH groups, indicating the existence of weakly bonded oxygen atoms near the surface region of the ZnO nanorods [1,4]. The C-1s core-level spectrum ( Figure 4d) reveals peaks at 284.76, 285.47, 287.34, and 290.27 eV, which are attributed to C=C, C-C, and C=O bonds and the π-π ⁎ transition of C=C, respectively, in the ZnO-SWCNT nanocomposite [28,41].…”

Section: Structural Characterization Of the Zno-swcnt Nanocompositementioning

confidence: 99%

Solar-Light-Driven Efficient ZnO–Single-Walled Carbon Nanotube Photocatalyst for the Degradation of a Persistent Water Pollutant Organic Dye

et al. 2019

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An efficient photocatalyst, ZnO–single-walled carbon nanotube (ZnO–SWCNT) nanocomposite was successfully fabricated through a straightforward one-pot–two-chemical recrystallization technique followed by thermal decomposition. The photocatalytic efficiency of the prepared ZnO–SWCNT composite was investigated by assessing the degradation of a persistent water-pollutant dye (methylene blue, MB) under visible-light irradiation. We found that the synthesized photocatalyst is an effective and recyclable agent for the decomposition of an MB solution. Its photocatalytic performance was substantially better than that of pristine ZnO nanorods or pristine SWCNTs. The reusability of the photocatalyst was also examined, affirming that it could be used repeatedly for five cycles without conspicuous loss of morphology or catalytic performance.

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“…Atualmente, com a rápida industrialização e crescimento populacional, efluentes industriais têm sido liberados exaustivamente e, nesse contexto, os mesmos se tornaram um grave problema ambiental. Assim, torna-se necessária a realização de pesquisas referentes ao tratamento e principais contaminantes desses efluentes como, por exemplo, os íons de metais pesados, bem como referentes às novas metodologias de tratamento sendo, um exemplo, as relacionadas a processos de adsorção (CAMPOS et al 2019;SHARMA et al, 2019).…”

Section: Revisão Bibliográficaunclassified

“…Destes, os efluentes contaminados com cromo em seu estado hexavalente tem sido alvo de maior preocupação devido à alta toxicidade, elevada solubilidade em água, mesmo em baixas concentrações, potencial carcinogênico e mutagênico e, ao elevado número de indústrias que geram efluentes com elevadas concentrações do mesmo (KONG et al, 2019;SHARMA et al, 2019;ZHANG et al, 2019;NELLAIAPPAN;KUMAR, 2018;RANGABHASHIYAM;BALASUBRAMANIAN, 2018;GORE et al, 2016).…”

Section: Mercúriounclassified

“…Dessas indústrias, destacam-se as de produção de plástico, pigmento, preservativo de madeira, galvanoplastia, curtimento de couro, cimento, mineração, tingimento, tratamento de seda, tintas e vernizes, vidro, materiais refratários, fertilizantes, catalisadores nas reações halogenações, alquilação e craqueamento catalítico de hidrocarbonetos, na indústria cerâmica e de aditivo propelente, que liberam grandes quantidades de efluentes contendo elevadas concentrações de cromo hexavalente (KONG et al, 2019;SARODE et al, 2019;SHARMA et al, 2019;NELLAIAPPAN;KUMAR, 2018;RANGABHASHIYAM;BALASUBRAMANIAN, 2018;XIANG et al, 2016;ZHOU et al, 2016;KAHU et al, 2016).…”

Section: Mercúriounclassified

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Avaliação da adsorção de cromo em carboximeticelulose obtida a partir de palha de milho modificada e ativada com diferentes líquidos iônicos

Neto¹

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A minha orientadora, Prof.ª Dra. Andreia de Araújo Morandim Giannetti, por todo o apoio, dedicação empenho e tempo sem os quais não seria possível a finalização deste trabalho, agradeço também pelos conselhos, por acreditar na minha capacidade e por empegar e compartilhar seu conhecimento e experiências que auxiliaram na concretização de mais um passo na minha carreira acadêmica. Aos meus pais que sempre apoiaram minhas decisões sem nem ao menos questionar, me dando força e aconselhamentos nos momentos de desânimo e dificuldades. A Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) pela bolsa concedida e pelo financiamento do presente trabalho (Processo nº 2017/05485-3).

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ZnO tetrapods and activated carbon based hybrid composite: Adsorbents for enhanced decontamination of hexavalent chromium from aqueous solution

Cited by 181 publications

References 75 publications

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Solar-Light-Driven Efficient ZnO–Single-Walled Carbon Nanotube Photocatalyst for the Degradation of a Persistent Water Pollutant Organic Dye

Avaliação da adsorção de cromo em carboximeticelulose obtida a partir de palha de milho modificada e ativada com diferentes líquidos iônicos

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