Soha M. Albukhari

@kau.edu.sa

Chemistry
King Abdulaziz University



           

https://researchid.co/salbukhari

RESEARCH INTERESTS

Physical, polymer Chemistry and Nanotechnology

51

Scopus Publications

Scopus Publications










  • Transition Metal-Catalyzed C−H Functionalization Through Electrocatalysis
    Prabhat Kumar Baroliya, Mukesh Dhaker, Subir Panja, Shaeel Ahmed Al‐Thabaiti, Soha M. Albukhari, Qana A. Alsulami, Arnab Dutta, and Debabrata Maiti
    Wiley
    Electrochemically promoted transition-metals catalyzed C-H functionalization has emerged as promising area of research over the last decades. However, development of this field is still at an early stage compared to the traditional functionalization reactions using chemical based oxidizing agents. Recent literature has evidenced an increased attention on electrochemically promoted metal catalyzed C-H functionalization. From the standpoint of sustainability, environmental friendliness and cost effectiveness, electrochemically promoted oxidation of a metal catalyst offers a mild, efficient and atom-economical alternative to the traditional chemical oxidants. This review discusses recent advances in the field of transition-metals-electro catalyzed C-H functionalization over the past decade and describes how the unique features of electricity enable metal-catalyzed C-H functionalization in an economic and sustainable way.

  • Rare earth and transition metal co-doped LaFeO<inf>3</inf> perovskite and its CNTs reinforced nanohybrid for environmental remediation application
    Muhammad Sabir, Najla AlMasoud, Muhammad Ramzan, Muhammad Aamir, Syeda Rabia Ejaz, Taghrid S. Alomar, Zeinhom M. El-Bahy, Mohamed Abdel Salam, Soha M. Albukhari, and Doaa F. Baamer
    Elsevier BV

  • Favorable Heteroaromatic Thiazole-Based Polyurea Derivatives as Interesting Biologically Active Products
    Mostafa A. Hussien, Gadeer R. Ashour, Soha M. Albukhari, Tamer S. Saleh, and Mahmoud A. Hussein
    MDPI AG
    This research sought to synthesize a new set of heteroaromatic thiazole-based polyurea derivatives with sulfur links in the polymers’ main chains, which were denoted by the acronyms PU1–5. Using pyridine as a solvent, a diphenylsulfide-based aminothiazole monomer (M2) was polymerized via solution polycondensation with varied aromatic, aliphatic, and cyclic diisocyanates. Typical characterization methods were used to confirm the structures of the premonomer, monomer, and fully generated polymers. The XRD results revealed that aromatic-based polymers had higher crystallinity than aliphatic and cyclic derivatives. SEM was used to visualize the surfaces of PU1, PU4, and PU5, revealing spongy and porous shapes, shapes resembling wooden planks and sticks, and shapes resembling coral reefs with floral shapes at various magnifications. The polymers demonstrated thermal stability. The numerical results for PDTmax are listed in the following order, ranked from lowest to highest: PU1 &lt; PU2 &lt; PU3 &lt; PU5 &lt; PU4. The FDT values for the aliphatic-based derivatives (PU4 and PU5) were lower than those for the aromatic-based ones (616, 655, and 665 °C). PU3 showed the greatest inhibitory impact against the bacteria and fungi under investigation. In addition, PU4 and PU5 demonstrated antifungal activities that, in contrast with the other products, were on the lower end of the spectrum. Furthermore, the intended polymers were also tested for the presence of the proteins 1KNZ, 1JIJ, and 1IYL, which are frequently utilized as model organisms for E. coli (Gram-negative bacteria), S. aureus (Gram-positive bacteria), and C. albicans (fungal pathogens). This study’s findings are consistent with the outcomes of the subjective screening.

  • Molybdenum oxide grafted-polyaniline nanocomposite modified ITO electrode for electrochemical sensing of arsenic oxyanion
    M.A. Zayed, M.A. Hussein, R.M. El-Shishtawy, S.M. Albukhari, W.A. El-Said, and E.A. Elshehy
    Elsevier BV


  • Facile Green Synthesis of ZnO NPs and Plasmonic Ag-Supported ZnO Nanocomposite for Photocatalytic Degradation of Methylene Blue
    Elham A. Alzahrani, Arshid Nabi, Majid Rasool Kamli, Soha M. Albukhari, Shaeel Ahmed Althabaiti, Sami A. Al-Harbi, Imran Khan, and Maqsood Ahmad Malik
    MDPI AG
    Removing organic pollutants, textile dyes, and pharmaceutical wastes from the water bodies has become an essential requirement for a safe environment. Therefore, the present study aimed to prepare semiconductor zinc oxide nanoparticles (ZnO NPs) and plasmonic Ag-supported ZnO nanocomposite (ZnO–Ag) using an environmentally friendly bio-approach as an alternative to hazardous synthesis approaches. ZnO NPs and ZnO–Ag nanocomposite were characterized by using UV–Vis diffuse reflectance spectroscopy (UV–DRS) (the Ag-supported ZnO nanocomposite exhibited an absorption band between 450–550 nm, attributed to the Ag NPs surface plasmon resonance (SPR)), Photoluminescence (PL) spectral investigation, which revealed the PL emission intensity of ZnO–Ag NPs was lower than pure ZnO NPs, describing an extended electron-hole pair (e--h+) lifespan of photogenerated charge carriers, Fourier transform infrared spectroscopy (FTIR), FT-Raman, and X-ray diffraction (XRD) analyses were deduced. In addition, energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) were performed and further ascertained the successful biosynthesis and thermally stable ZnO Nps and ZnO–Ag nanocomposite. The as-prepared ZnO–Ag nanocomposite displayed increased photocatalytic characteristics due to the decline in the bandgap energy from 3.02 eV (ZnO NPs) to 2.90 eV (ZnO–Ag nanocomposite). The photocatalytic activity of the developed nanocomposite for the degradation of methylene blue (MB) dye, a primary textile industry released water-pollutant, was conducted under UV light irradiation. Meanwhile, the maximum % degradation of MB dye molecules was attained by 98.0 % after 60 min exposure of UV-light irradiation. Increased photocatalytic activity of ZnO–Ag nanocomposites and a faster rate of MB degradation were achieved by the deposition of plasmonic Ag NPs and the surface plasmon resonance (SPR) effect possessed by Ag NPs. The primary oxidative route that resulted in MB degradation was the production of hydroxyl radicals (OH•). The SPR effect of the photocatalyst induced the synergistic enhancement of the optical response and separation of the photo-induced charge carriers. The combined study gives comprehensive information and directions for future research on noble metal-modified nanocatalysts for direct applications in the photocatalytic degradation of textile and organic wastes in water.

  • Solar-light-driven and magnetically recoverable doped nano-ferrite: An ideal photocatalyst for water purification applications
    Muhammad Rashid, Warda Hassan, Muhammad Aadil, H.H. Somaily, Noor Mahmood Mahdi, Rahiam Lataef, Anmar Ghanim Taki, Khaysy Srithilat, Doaa F. Baamer, Soha M. Albukhari,et al.
    Elsevier BV

  • One-step preparation of RGO/Fe<inf>3</inf>O<inf>4</inf>–FeVO<inf>4</inf> nanocomposites as highly effective photocatalysts under natural sunlight illumination
    Qana A. Alsulami, A. Rajeh, Mohammed A. Mannaa, Soha M. Albukhari, and Doaa F. Baamer
    Springer Science and Business Media LLC
    AbstractThe study used a one-step hydrothermal method to prepare Fe3O4–FeVO4 and xRGO/Fe3O4–FeVO4 nanocomposites. XRD, TEM, EDS, XPS, DRS, and PL techniques were used to examine the structurally and morphologically properties of the prepared samples. The XRD results appeared that the Fe3O4–FeVO4 has a triclinic crystal structure. Under hydrothermal treatment, (GO) was effectively reduced to (RGO) as illustrated by XRD and XPS results. UV–Vis analysis revealed that the addition of RGO enhanced the absorption in the visible region and narrowed the band gap energy. The photoactivities of the prepared samples were evaluated by degrading methylene blue (MB), phenol and brilliant green under sunlight illumination. As indicated by all the nanocomposites, photocatalytic activity was higher than the pure Fe3O4–FeVO4 photocatalyst, and the highest photodegradation efficiency of MB and phenol was shown by the 10%RGO/Fe3O4–FeVO4. In addition, the study examined the mineralization (TOC), photodegradation process, and photocatalytic reaction kinetics of MB and phenol.


  • Mesoporous BiVO<inf>4</inf>/TiO<inf>2</inf> heterojunction: enhanced photoabsorption and photocatalytic ability through promoted charge transfer
    Nada Y. Tashkandi, Soha M. Albukhari, and Adel A. Ismail
    Springer Science and Business Media LLC

  • Native functional group directed distal C(sp<sup>3</sup>)-H activation of aliphatic systems
    Saghnik Saha, Jayabrata Das, Shaeel Ahmed Al-Thabaiti, Soha M. Albukhari, Qana A. Alsulami, and Debabrata Maiti
    Royal Society of Chemistry (RSC)
    Native functional group assisted distal C–H functionalization.

  • Synthesis and design of spinel ZnAl<inf>2</inf>O<inf>4</inf> nanowires with PtO nanoparticles decoration for enhanced induced visible light Hg(II) reduction
    S. M. Albukhari, A. A. Ismail, S. Z. Alsheheri, and M. H. H. Mahmoud
    Springer Science and Business Media LLC
    Spinel ZnAl 2 O 4 nanowires with mesopores networks have been synthesized using Pluronic P-123 as a template-assisted sol–gel approach and then PtO nanoparticles (0.2–0.8%) were uniformly anchored on ZnAl 2 O 4 nanowires for Hg(II) ions reduction under illumination by visible light. Transmission electron microscopes image indicated PtO NPs about 5 nm decorated ZnAl 2 O 4 nanowires having length of 200 nm and diameter of 10 nm. The optimum photocatalyst was 0.6%PtO@ZnAl 2 O 4 nanowires, whose photoreduction ability of Hg(II) amounted to 100% within 30 min and its reaction rate constant was 0.054 min −1 , five times larger than that of bare ZnAl 2 O 4 (0.011 min −1 ). The reduction ability over 0.6%PtO@ZnAl 2 O 4 nanowires was enhanced 2.5 times larger than that bare ZnAl 2 O 4 . The photoreduction rate over 0.6%PtO@ZnAl 2 O 4 nanowires was about 3.3 times greater than bare ZnAl 2 O 4 nanowires. The formation of heterojunction can facilitate efficient charge separation and enhance the photoreduction performance, evidenced by the transient photocurrent and photoluminescence measurements. This work illustrated a simple and efficient route to design and form spinel PtO@ZnAl 2 O 4 nanowires, which are anticipated to have practical applications in environmental technology under solar light.

  • Combination Effect of Novel Bimetallic Ag-Ni Nanoparticles with Fluconazole against Candida albicans
    Majid Rasool Kamli, Elham A. Alzahrani, Soha M. Albukhari, Aijaz Ahmad, Jamal S. M. Sabir, and Maqsood Ahmad Malik
    MDPI AG
    The increasing frequency of antifungal drug resistance among pathogenic yeast “Candida” has posed an immense global threat to the public healthcare sector. The most notable species of Candida causing most fungal infections is Candida albicans. Furthermore, recent research has revealed that transition and noble metal combinations can have synergistic antimicrobial effects. Therefore, a one-pot seedless biogenic synthesis of Ag-Ni bimetallic nanoparticles (Ag-Ni NPs) using Salvia officinalis aqueous leaf extract is described. Various techniques, such as UV–vis, FTIR, XRD, SEM, EDX, and TGA, were used to validate the production of Ag-Ni NPs. The antifungal susceptibility of Ag-Ni NPs alone and in combination with fluconazole (FLZ) was tested against FLZ-resistant C. albicans isolate. Furthermore, the impacts of these NPs on membrane integrity, drug efflux pumps, and biofilms formation were evaluated. The MIC (1.56 μg/mL) and MFC (3.12 μg/mL) results indicated potent antifungal activity of Ag-Ni NPs against FLZ-resistant C. albicans. Upon combination, synergistic interaction was observed between Ag-Ni NPs and FLZ against C. albicans 5112 with a fractional inhibitory concentration index (FICI) value of 0.31. In-depth studies revealed that Ag-Ni NPs at higher concentrations (3.12 μg/mL) have anti-biofilm properties and disrupt membrane integrity, as demonstrated by scanning electron microscopy results. In comparison, morphological transition was halted at lower concentrations (0.78 μg/mL). From the results of efflux pump assay using rhodamine 6G (R6G), it was evident that Ag-Ni NPs blocks the efflux pumps in the FLZ-resistant C. albicans 5112. Targeting biofilms and efflux pumps using novel drugs will be an alternate approach for combatting the threat of multi-drug resistant (MDR) stains of C. albicans. Therefore, this study supports the usage of Ag-Ni NPs to avert infections caused by drug resistant strains of C. albicans.

  • Synthesis and Characterization of Green ZnO@polynaniline/Bentonite Tripartite Structure (G.Zn@PN/BE) as Adsorbent for As (V) Ions: Integration, Steric, and Energetic Properties
    Mohamed Abdel Salam, Mohamed Mokhtar, Soha M. Albukhari, Doaa F. Baamer, Leonardo Palmisano, Mariusz Jaremko, and Mostafa R. Abukhadra
    MDPI AG
    A green ZnO@polynaniline/bentonite composite (G.Zn@PN/BE) was synthesized as an enhanced adsorbent for As (V) ions. Its adsorption properties were assessed in comparison with the integrated components of bentonite (BE) and polyaniline/bentonite (PN/BE) composites. The G.Zn@PN/BE composite achieved an As (V) retention capacity (213 mg/g) higher than BE (72.7 mg/g) and PN/BE (119.8 mg/g). The enhanced capacity of G.Zn@PN/BE was studied using classic (Langmuir) and advanced equilibrium (monolayer model of one energy) models. Considering the steric properties, the structure of G.Zn@PN/BE demonstrated a higher density of active sites (Nm = 109.8 (20 °C), 108.9 (30 °C), and 67.8 mg/g (40 °C)) than BE and PN/BE. This declared the effect of the integration process in inducing the retention capacity by increasing the quantities of the active sites. The number of adsorbed As (V) ions per site (1.76 up to 2.13) signifies the retention of two or three ions per site by a multi-ionic mechanism. The adsorption energies (from −3.07 to −3.26 kJ/mol) suggested physical retention mechanisms (hydrogen bonding and dipole bonding forces). The adsorption energy, internal energy, and free enthalpy reflected the exothermic, feasible, and spontaneous nature of the retention process. The structure is of significant As (V) uptake capacity in the existence of competitive anions or metal ions.

  • Removal of Malachite Green Dye from Water Using MXene (Ti<inf>3</inf> C<inf>2</inf>) Nanosheets
    Soha M. Albukhari, Mohamed Abdel Salam, and Ahad M. M. Aldawsari
    MDPI AG
    In the present study, new emerging 2D Mxene nanosheets (MXNSs) were synthesized from MAX phase powders of Ti3AlC2 and then characterized using a scanning electron microscope (SEM) and X-ray diffraction (XRD) to explore the chemical and physical properties of the prepared MXNS. The characterization of the synthesized MXNS indicated the formation of exfoliated 2D MXene nanosheets (Ti3C2) as a result of the HF treatment of the MAX phase, which was confirmed by XRD measurements, as the characteristic peaks of 2D MXene nanosheets were only observed. The synthesized MXNS was then used as a solid adsorbent for removing malachite green dye (MG) from water. The effects of different operational factors such as MXNS dose, solution temperature, time, MG concentration, solution pH, and ionic strength have also been evaluated. The adsorption results showed that the temperature of the solution, as well as its pH, significantly influenced MG removal when using MXNS. The optimum removal was obtained within 150 min, with 20 mg of MXNS at ambient temperature and a pH value of 6.0. The maximum removal capacity obtained was 4.6 mg MG per g of MXNS using 5 mg of MXNS with a removal efficacy of 46.0%, and the minimum removal capacity obtained was 2.5 mg MG per g of MXNS using 20 mg of MXNS with a removal efficacy of 99.1%. Finally, the results displayed that the MXNS solid adsorbent was able to absorb a high percentage of MG and maintained reasonable efficiency for four consecutive cycles, indicating that MXNS could be a promising adsorbent in wastewater remediation and environmental sustainability.