Article
Chemistry, Physical
Muhammad Hashaam, Sarmed Ali, Tahreem Khan, Muhammad Salman, Shanza Rauf Khan, Amjad Islam Aqib, Tean Zaheer, Shamsa Bibi, Saba Jamil, Merfat S. Al-Sharif, Samy F. Mahmoud, Wangyuan Yao
Summary: Poly (N-isopropylacrylamide-acrylic acid) [p(NIPAM-AAc)] microgel was successfully synthesized using precipitation polymerization. Hybrid microgels containing silver nanoparticles, graphene oxide, and p(NIPAM-AAc) were fabricated and used as catalysts for the reduction reaction. Graphene sheets played a role in electron relay among silver nanoparticles and microgels.
Article
Engineering, Environmental
Meriem Banou, Yubiao Niu, Fatima Ammari, Tom Dunlop, Richard E. Palmer, Chedly Tizaoui
Summary: The study presents a new catalyst (AuNP/GNP/MgAl-LDH) consisting of gold nanoparticles (AuNP) supported on graphene nanoplatelets (GNP) intercalated in MgAl layered double hydroxides (MgAl-LDH). The catalyst was used for the reduction of 4-nitrophenol to 4-aminophenol using NaBH4 as a reducing agent. Characterization techniques such as FTIR, XRD, STEM, TEM, and BET specific surface area were employed. The results showed that AuNP/GNP/MgAl-LDH exhibited the highest reaction rate constant and stability after five repeated cycles.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Multidisciplinary
Danyi Li, Lin Lin, Manli Lu, Linfan Li, Jihao Li
Summary: The magnetic graphene noble metal aerogels (GA-Fe3O4-Au-(ethanol)) were prepared through self-assembly induced by radiation reduction. The prepared material GA-Fe3O4-Au-(ethanol) can be easily attracted by a magnet. Meanwhile, GA-Fe3O4-Au-(ethanol) successfully achieved the degradation of 4-nitrophenol (4-NP), an environmentally harmful pollutant. It is worth noting that the prepared materials exhibited better catalytic performance than general noble metal catalysts, and the content of noble metals in the composite significantly influenced the catalytic reaction rate. The successful preparation of this material provides a feasible approach for treating the pollutant 4-NP.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Zhijie Ren, Huanhuan Li, Jin Li, Jun Cai, Lian Zhong, Yingqi Ma, Yajie Pang
Summary: This study investigates the preparation of reduced graphene oxide/chitosan/gold nanoparticles (rGO/CHS/AuNPs) composites using chitosan with different molecular weights as reducing agent and stabilizer, and examines their composition, structure, and catalytic performance. The results indicate that rGO/CHS/AuNPs prepared using low molecular weight chitosan exhibit the best catalytic activity. This research is of significance for the development of efficient catalysts for the reduction of aromatic nitro compounds.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Inorganic & Nuclear
Quanli Shen, Xuzi Cong, Leyi Chen, Lei Wang, Yonggang Liu, Likai Wang, Zhenghua Tang
Summary: We report the synthesis, structure anatomy, and catalytic properties of Ag14Cu2 nanoclusters. Ag14Cu2 has a robust electronic structure and distinctive absorbance feature. It exhibits excellent catalytic performance and stability in 4-nitrophenol reduction and CO2 reduction reaction.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Yujie Liu, Haijun Zhou, Jinling Wang, Ding Yu, Zhaolei Li, Rui Liu
Summary: Core-shell nanoparticles (Fe3O4@PDA) wrapped with Ag were prepared using a simple and green synthesis method. The obtained nanoparticles showed excellent catalytic activity and selectivity, indicating their potential applications in various fields.
Review
Environmental Sciences
Mayara Bitencourt Leao, Jose Rafael Bordin, Carolina Ferreira de Matos
Summary: Three-dimensional graphene-based materials are effective adsorbents for various contaminants, despite the lack of a positive correlation between surface area and adsorptive capacity. This review summarizes recent studies on different types of adsorbents based on three-dimensional graphene, emphasizing the role of experimental parameters such as contact time, adsorbent dosage, pH, and initial concentration. The review also discusses the applications of these materials in removing emerging pollutants and identifies the challenges and prospects of three-dimensional graphene-based materials.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Chemistry, Physical
Gonzalo De-Paz-Arroyo, Lorenzo A. Picos-Corrales, Sergio Perez-Sicairos, Angel Licea-Claverie
Summary: This study investigates the removal of gold and silver nanoparticles using flocculation with chitosan-based graft polymers. It is found that the bridging mechanism plays a crucial role in improving the performance of chitosan in removing nanoparticles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Mohamed E. Mahmoud, Sarah M. Elsayed, Safe ELdeen M. E. Mahmoud, Reham O. Aljedaani, Mohamed Abdel Salam
Summary: Metal-organic frameworks (MOFs), known for their high surface area, stability, and tunable microstructure, have attracted research interests for applications in removal of toxic heavy metals and photocatalytic reduction. This review focuses on the application of modified and functionalized MOFs composites for the removal of hexavalent chromium and the photocatalytic conversion of toxic ions into less toxic forms.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Shih-Hao Yu, Chun-Chao Chang, Fu-Der Mai, Hui-Yen Tsai, Yu-Chuan Liu
Summary: Researchers have reported innovative applications of plasmon-activated water (PAW) as a catalytically reducing solvent, showing distinct comprehensive reducing abilities. Active, electron-doped liquid water was prepared from hot electron transfer (HEF) on supported gold nanoparticles (AuNPs) under resonant illumination. This concept has emerged as a promising green application in catalytic reduction technologies.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Review
Environmental Sciences
Lijin Huang, Rujia Shen, Qin Shuai
Summary: Pharmaceutical pollution is a major concern, and regulating the concentration of pharmaceuticals in water is crucial for clean water provision. Metal-organic frameworks (MOFs) are promising adsorbents for removing pharmaceutical contaminants due to their high surface area, controllable structure, and easy modification. Methods for preparing water-stable MOF-based materials and recent advancements in adsorptive removal of pharmaceutical pollutants using functional MOFs are discussed, along with potential interactions such as coordination, hydrogen bonding, and electrostatic forces. Future research should focus on creating desirable MOFs and establishing structure-property relationships for improved capture performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Swati Verma, Ki-Hyun Kim, Navneet Kumar, Satya Sundar Bhattacharya, Mu Naushad, Raj Kumar Dutta
Summary: In this study, ammonia-functionalized graphene oxide (NH(3)GO) sheets were synthesized via solvothermal method for the adsorptive removal of organic pollutants in water. The NH(3)GO sheets exhibited high adsorption capacity and partition coefficient for different types of organic pollutants. Thermodynamic analysis revealed the endothermic and spontaneous nature of the adsorption process.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Poonam Kumari, Kumud Malika Tripathi, Kamlendra Awasthi, Ragini Gupta
Summary: In light of accelerated industrialization and the crisis of clean water, the treatment of wastewater, particularly the elimination of nitrophenols, is significant. In this study, low-cost and green carbon nano-onions (CNOs) synthesized from low-quality flaxseed oil showed high efficiency in removing nitrophenols from contaminated water. The adsorption of nitrophenols onto CNOs followed a Langmuir adsorption isotherm and pseudo-second-order kinetics, and the process was found to be spontaneous and exothermic. Furthermore, the CNOs demonstrated good recyclability and easy separation, making them highly applicable in wastewater treatment.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Multidisciplinary Sciences
Jinxing Chen, Qian Ma, Minghua Li, Daiyong Chao, Liang Huang, Weiwei Wu, Youxing Fang, Shaojun Dong
Summary: Gold nanoparticles exhibit enzyme-like activities and can mimic the catalytic process of glucose oxidation enzyme, producing H2O2; other noble metal nanoparticles can also catalyze glucose oxidation reaction, where oxygen is preferably reduced to water.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Chen Dong, Jia-Jia Yang, Lin-Hua Xie, Ganglong Cui, Wei-Hai Fang, Jian-Rong Li
Summary: Warm-season O-3 pollution is increasing worldwide, posing a threat to human health and the environment. Researchers have developed a stable MOF that can capture airborne VOCs and decompose trace O-3. This study demonstrates the potential of bimetallic MOFs in catalytic O-3 decomposition and provides insights for developing advanced air purification materials.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Zahoor H. Farooqi, Rida Khalid, Robina Begum, Umar Farooq, Qingshi Wu, Weitai Wu, Muhammad Ajmal, Ahmad Irfan, Khalida Naseem
ENVIRONMENTAL TECHNOLOGY
(2019)
Article
Chemistry, Applied
Muhammad Ajmal, Faiza Aftab, Iram Bibi, Muzaffar Iqbal, Jaweria Ambreen, Hafiz Badaruddin Ahmad, Naeem Akhtar, Abdul Haleem, Muhammad Siddiq
JOURNAL OF POROUS MATERIALS
(2019)
Article
Materials Science, Composites
Sedra Tul Muntha, Muhammad Ajmal, Hina Naeem, Ayesha Kausar, Muhammad Abid Zia, Muhammad Siddiq
POLYMER COMPOSITES
(2019)
Article
Environmental Sciences
Hina Naeem, Muhammad Ajmal, Raheela Beenish Qureshi, Sedra Tul Muntha, Muhammad Farooq, Muhammad Siddiq
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Chemistry, Physical
Yunxing Li, Yaqin Wang, Jaweria Ambreen, Cheng Yang, To Ngai
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Materials Science, Composites
Sedra Tul Muntha, Jaweria Ambreen, Muhammad Siddiq, Hina Naeem, Saz Muhammad, Anum Khan
Summary: In this study, polysulfone (PSf) nanocomposite membranes (NCM) were successfully fabricated by incorporating silica-modified zeolite (SiO2-MZ) and polyimide (PI)-SiO2-MZ as inorganic nanocomposite (NC) fillers into the PSf matrix. Analysis of morphological, physical characteristics, structure, and thermal properties of the NCM showed better compatibility between PI-SiO2-MZ and the polymer matrix, as well as an increase in glass transition temperature (T-g) with increasing filler concentration. Furthermore, antibacterial activities of the NCM were explored against four bacterial strains, showing promising results for PSf membranes reinforced with PSf/PI-SiO2-MZ NC filler.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2021)
Article
Chemistry, Physical
Man-hin Kwok, Jaweria Ambreen, To Ngai
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Polymer Science
Yuwei Zhu, Lei Pei, Jaweria Ambreen, Chuanxin He, To Ngai
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2020)
Article
Multidisciplinary Sciences
S. S. Batool, Z. Imran, Kamran Rasool, Jaweria Ambreen, Safia Hassan, Saira Arif, Mushtaq Ahmad, M. A. Rafiq
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Abdul Haleem, Sidra Bibi Syaal, Muhammad Ajmal, Jaweria Ambreen, Sajid Rauf, Nasir Ali, Saz Muhammad, Afzal Shah, Muhammad Abid Zia, Muhammad Siddiq
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Atiya Khalid, Naveed Akhtar, Kexin He, Bingxue Liu, Mushtaq Ahmad, Jaweria Ambreen, Safia Hasan, Xiaoming Zhang, Syeda Sitwat Batool, Chuanbo Li
Summary: Bismuth sulfide (Bi2S3) nanorods synthesized via solid-state reaction exhibited efficient photocatalytic performance in the removal of Congo red dye from water, with high photodegradation efficiencies and specific surface area. The photocatalytic process followed a pseudo-first-order kinetic model, with an apparent rate constant of 0.01573/min for the Bi2S3 nanorods catalyst.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Polymer Science
Anwar Saeed Khan, Saz Muhammad, Jaweria Ambreen, Muhammad Farooq, Junaid Ihsan, Abdul Haleem, Muhammad Usman, Muhammad Siddiq
Summary: The study focused on the synthesis of neat polysulfone and manganese oxide silica composite membrane for oil-water emulsion separation. Characterization of the membranes showed that 5 wt.% composite membrane had the greatest oil/water separation capacity due to higher nanofiller content and porosity. These composite membranes have the potential to address the important environmental concern of oil/water pollution by facile tuning of properties during fabrication process.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2021)
Article
Environmental Sciences
Sajid Khan, Asghar Hussain, Kexin He, Bingxue Liu, Zahid Imran, Jaweria Ambreen, Safia Hassan, Mushtaq Ahmad, Syeda Sitwat Batool, Chuanbo Li
Summary: The photocatalytic activity of Ag-modified Mn3O4 nanoparticles is higher than pure Mn3O4. The rate constant values for different catalysts are 0.01/min, 0.017/min, and 0.024/min for pure Mn3O4, 1% Ag, and 3% Ag modified Mn3O4 respectively.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Analytical
Komal Majeed, Jaweria Ambreen, Saeed Ahmed Khan, Saz Muhammad, Aqeel Ahmed Shah, Muhammad Ali Bhatti, Syeda Sitwat Batool, Muhammad Farooq, Syed Nizam Uddin Shah Bukhari, Ali Dad Chandio, Sadaf Jamal Gilani, May Nasser Bin Jumah
Summary: Wastewater treatment is indispensable to prevent adverse health effects and deterioration of the quality of life on earth. Photocatalysis using nanocomposites of manganese oxide (Mn3O4) and nickel oxide (NiO) has been studied for its effectiveness in purifying wastewater. The synthesized nanomaterials were characterized using various techniques and the photocatalytic performance of the Mn3O4/NiO nanocomposite (NC) was evaluated. The results show that the NCs have a high photocatalytic degradation efficiency of 95% for removing methylene blue (MB) dye from wastewater.