Article
Chemistry, Physical
Yanxin Li, Xiaoyan Zhang, Zhijing Wu, Hongbin Sheng, Can Li, Haiyan Li, Lixin Cao, Bohua Dong
Summary: A novel hybrid OER electrocatalyst consisting of Ni-doped LaFeO3 with a porous structure combined with ultra-thin amorphous FeOOH nanosheets has been successfully prepared, showing extremely low overpotential and high OER activity.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Luyan Shi, Ke Zhu, Yuting Yang, Yi Liu, Shoulei Xu, Tayirjan Taylor Isimjan, Xiulin Yang
Summary: A cost-effective Ru-clusters decorated cobalt-cerium oxides coating ZIF-67 catalyst was prepared, exhibiting high performance and exceptional reusability in alkaline NaBH4 solution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Bin Fang, Xiang Chu, Xiaoxiao Han, Jianing He, Baokang Geng, Lingxi Jia, Xiao Wang, Shuyan Song, Hongjie Zhang
Summary: A facile hard templated route to fabricate CeO2 incorporated Ni-Co mixed metal phosphide embedded in a carbon matrix (CeO2-Co2-xNixP@C) is reported. The obtained CeO2-Co2-xNixP@C exhibits remarkably improved OER performance and retains good catalytic activity and stability in seawater, benefiting from the promotion effect of CeO2 in inhibiting chlorine competition.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Ubong J. Etim, Chenchen Zhang, Ziyi Zhong
Summary: CO2 activation requires active sites on catalyst surfaces, with oxygen vacancies or defect sites playing a significant role in promoting CO2 transformation reactions.
Article
Chemistry, Multidisciplinary
Qingyun Shi, Yuxing Gao, Shaolei Zhao, Chunmin Zhang, Cong Liu, Chunli Wang, Shaohua Wang, Yongzhi Li, Dongming Yin, Limin Wang, Yong Cheng
Summary: The interaction between partially reduced nano-crystallite titanium dioxide (TiO2-x(F)) and MgH2 can lower the desorption temperature and improve the dehydrogenation kinetics. The synergistic effect between multivalent Ti species, in situ formed MgF2 and MgF2-xHx, as well as oxygen vacancies contribute to the improved hydrogen storage performance of MgH2.
Article
Chemistry, Physical
Arzu Ekinci
Summary: This study reports the synthesis of WSP-FeO nanoparticles catalysts through a green synthesis method using watermelon seed peel (WSP) extract. The activities of the synthesized catalysts in the hydrolysis of sodium borohydride were evaluated under different conditions. The structural and morphological properties of the nanoparticles were characterized.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yi Zhao, Wei Wang, Xinyi Yin, Linmei Wang, Shanshan Li, Jianli Wang, Yaoqiang Chen
Summary: In this study, aliovalent additives (La3+, Nd3+, Pr3+/4+, and Y3+) were introduced to CeO2-ZrO2-Al2O3 (CZA) to increase surface oxygen vacancies by surface modification. Among them, Pr showed the most significant promotion effect. The modified Pd/Pr/CZA catalyst exhibited the best conversion efficiency of C3H8 and NO, with a reduced light-off temperature (T90) comparing to Pd/CZA even after thermal aging at 900°C for 6 hours. (c) 2022 Published by Elsevier B.V.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Yunshan Shang, Yi Liu, Delin Yuan, Jingyun Chen, Hua Liu, Fu-Kuo Chiang, Hui Wei, Aihua Xing, Shengfu Ji
Summary: In this study, bifunctional catalysts composed of SAPO-34 zeolite and Mn-doped ZnCrAlOy oxide were used for the direct conversion of syngas to light olefins. It was found that Mn doping could decrease the particle size of ZnCrAlOy spinel and increase the formation of oxygen vacancies, which protected more light olefins and intermediates from hydrogenation.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Lianpeng Song, Zhong Liang, Mingzi Sun, Bolong Huang, Yaping Du
Summary: This study successfully synthesized CeO2/Bi3NbO7 fibrous tubular structure through constructing an interface, which exhibited high selectivity and durability in the CO2RR. Theoretical calculations showed that the interface modulated the electroactive regions, improving the adsorption of key adsorbates and reducing the reaction energy barriers, resulting in increased selectivity and yield of HCOOH.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Materials Science, Ceramics
Zhijie Wu, Tianhui Wang, Qibing Li, Yingying Zhang, Jin Han, Qi Wang, Zhengwen Yang, Jianbei Qiu, Yongjin Li, Zhiguo Song
Summary: In this study, Er3+ was doped in Bi3O4Br nano-crystal material to introduce impurity energy levels close to the intermediate band (IB) formed by oxygen vacancies defects. The density functional theory calculations confirmed the potential of tailored ground state carrier transition and enhancement of UC luminescence performance. The results showed a significant enhancement in UC emission intensity under excitation, paving the way for efficient UC nanosheet design through energy transfer (ET) combining matrix semiconductor with RE.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Long Li, Tao Meng, Jie Wang, Baoguang Mao, Jingbin Huang, Minhua Cao
Summary: Oxygen vacancies have been shown to enhance lithium-ion diffusion kinetics in Li2GeO3-x/C, leading to improved lithium storage. The introduction of oxygen vacancies increases electronic conductivity and reduces the activation energy of lithium-ion transport, resulting in accelerated lithium-ion diffusion kinetics during charging and discharging processes. The Li2GeO3-x/C nanofibers exhibit high discharge capacity, initial Coulombic efficiency, and rate capability, demonstrating the potential of injecting oxygen vacancies into metal oxides for high-performance anode materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Kun Jiang, Wenjun Liu, Wei Lai, Menglian Wang, Qian Li, Zhaolong Wang, Junjie Yuan, Yilin Deng, Jian Bao, Hongbing Ji
Summary: In this study, an advanced bifunctional electrocatalyst based on NiFe layered double hydroxide (LDH)/FeOOH heterostructure nanosheets was successfully synthesized via a simple electrodeposition method. The electrode demonstrated excellent electrocatalytic activity and stability, providing a valid strategy for designing a non-noble metal catalyst for seawater splitting. This work highlights the potential of the NiFe LDH/FeOOH heterostructure in facilitating active NiOOH species formation and enhancing overall alkaline simulated seawater splitting efficiency.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Ying Zheng, Qiang Wang, Qi Yang, Sikai Wang, Max Joshua Hulsey, Shipeng Ding, Shinya Furukawa, Maoshuai Li, Ning Yan, Xinbin Ma
Summary: This study tunes the local coordination environment of Rh single atoms on CeO2 through calcination, creating a highly active hydroformylation catalyst. Rh single atoms on CeO2 calcined at a high temperature exhibit more oxygen vacancies, leading to the formation of a large amount of low-coordination Rh active species that are more active for hydroformylation. The best Rh/CeO2 catalyst achieved a TOF of approximately 5000 h(-1) and 100% aldehyde selectivity in propylene hydroformylation.
Article
Green & Sustainable Science & Technology
Rajiv Kashyap, Anjali Leal, Moondeep Chauhan, Shailendra Singh Khichi, Gurpreet Kaur, Ramesh K. Sharma
Summary: This study fabricates a Hydroelectric Cell using a solid-state method and synthesizes oxygen-deficient barium-doped Co3O4 multifunctional material for green electrical energy generation and storage. The doped material exhibits changes in morphology, increased band gap, and higher specific surface area. The doped cell shows significantly increased short circuit current and peak power compared to the undoped cell. Moreover, the doped material exhibits higher specific capacitance and excellent charge-discharge stability. Hydrogen gas produced as a byproduct can be used for further energy generation.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Yewei Ren, Zhenping Qu, Hui Wang, Anlian Zhao
Summary: The strategy of acid-etching was used to improve the catalytic activity of spinel CoMn2O4, and a 0.06 M concentration catalyst showed a 16-fold increase in toluene reaction rate compared to the pristine catalyst at 210 degrees C. The crystal, nanosphere, and mesoporous structures of the 0.06 M catalyst were not significantly damaged. The presence of oxygen vacancies weakened the metal-oxygen bond strength and improved the mobility of surface lattice oxygen species, leading to enhanced catalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Ayesha Gul, Nader Ghaffari Khaligh, Nurhidayatullaili Muhd Julkapli
Summary: Carbon-based nanoadsorbents, such as graphene, carbon nanotubes, and activated carbon, have unique physical and chemical properties that make them widely used in wastewater treatment. Adsorption technology is considered as one of the prominent methods for treating wastewater due to its maximum efficiency, simplicity, flexibility, eco-friendliness, and selectivity for heavy metals.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Engineering, Electrical & Electronic
Saba Afzal, Nurhidayatullaili Muhd Julkapli, Lee Kian Mun
Summary: The paper synthesized and optimized TiO2/chitosan/Fe3O4 nanocomposites, with TCF2 composite showing the best photocatalytic activity, bandgap narrowing, and improved charge carrier separation. The larger crystallite size of TCF2 contributed to its enhanced optical properties and potential for >90% degradation of nitrophenols under solar light exposure.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Analytical
Ibrahim Khalil, Wageeh A. Yehye, Nurhidayatullaili Muhd Julkapli, Abu Ali Ibn Sina, Faisal Islam Chowdhury, Mayeen Uddin Khandaker, Vincent K. S. Hsiao, Wan Jefrey Basirun
Summary: The development of a straightforward, rapid, sensitive, and multiplex DNA detection method is crucial for verifying food adulterants quantitatively. Surface-enhanced Raman scattering (SERS) offers molecule-specific fingerprint spectra, which may help address the limitations of current detection techniques. In this study, a SERS-based duplex DNA detection strategy was developed for simultaneous and quantitative detection of meat adulterants and endangered species, showing improved sensitivity and specificity.
VIBRATIONAL SPECTROSCOPY
(2021)
Article
Materials Science, Multidisciplinary
Mohd Fadhil Majnis, Ong Chia Yee, Mohd Azam Mohd Adnan, Mohd Rashid Yusof Hamid, Ku Zilati Ku Shaari, Nurhidayatullaili Muhd Julkapli
Summary: In this study, chitosan and zirconia were integrated into titanium dioxide nanoparticles through a sol-gel fabrication method to generate CS-ZrO2/TiO2 catalyst. The hybrid catalyst showed reduced band gap energy, enhanced photocatalytic activity, and improved photodegradation efficiency of model dye compounds under solar irradiation.
Article
Construction & Building Technology
N. Siti Syazwani, M. N. Ervina Efzan, C. K. Kok, M. J. Nurhidayatullaili
Summary: This study extracted cellulose nanofiber from jute fiber through a combination of chemical and mechanical treatment, and analyzed the effects of the extraction method on its crystallinity and chemical composition. The results showed that the extracted nanofiber successfully removed non-cellulosic substances and increased crystallinity.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Mohd Azam Mohd Adnan, Muhammad Nur Iman Amir, Mohd Rashid Y. Yusof Hamid, Mohd Rafie Johan, Nurhidayatullaili Muhd Julkapli
Summary: This study investigates the photodegradation of methyl orange pollutants using a composite material of synthesized titanium dioxide and chitosan supported on a glass substrate. The results show that the composite material with a 2:2 weight ratio of chitosan to titanium dioxide exhibits the highest dye removal activity under acidic conditions.
JOURNAL OF MATERIALS SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Nurul Atikah Mohd Ishak, Fatimah Zahara Abdullah, Nurhidayatullaili Muhd Julkapli
Summary: Dissolving cellulose under harsh conditions is the basis for traditional chemical methods to obtain nanocellulose. However, more efficient and environmentally friendly solvents are needed. Ionic liquids have emerged as useful and eco-friendly solvents due to their stability and miscibility with other solvents. Ultra-sonification, on the other hand, is a procedure for producing nanocellulose with homogeneous and crystalline characteristics.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Mohd Azam Mohd Adnan, Bao Lee Phoon, Mohd Rafie Johan, Husnul Azan Tajaruddin, Nurhidayatullaili Muhd Julkapli
Summary: A solar-driven ZnO-supported chitosan (ZnO/CS) photocatalyst with a narrow band gap and macro-porous structure was developed. The catalyst showed excellent decolorization properties under specific conditions, offering a new approach for efficient, stable, sustainable, and low-cost dye water treatment technology.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Ayesha Gul, Azman Ma'amor, Nader Ghaffari Khaligh, Nurhidayatullaili Muhd Julkapli
Summary: This review explores the applications of activated carbon (AC) using adsorption technology in wastewater treatment, specifically targeting heavy metals and dyes. AC exhibits high adsorption efficiency, non-toxicity, and sustainability, making it a promising material for commercial applications. However, there are still limitations in its current usage, and further research is needed to develop simple and cost-effective synthesis methods and study its performance in real wastewater systems.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Inorganic & Nuclear
Durga Devi Suppiah, Nurhidayatullaili Muhd Julkapli, Mohd Rafie Johan
Summary: In this study, magnetite nanoparticles were successfully synthesized using a simple and sustainable titration method with variable parameters. The precipitate growth rate and structure of iron oxide nanoparticles were influenced by these parameters, resulting in nanoparticles with excellent ferromagnetic and stabilization properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Review
Materials Science, Composites
Ayesha Gul, Nader Ghaffari Khaligh, Nurdiana Nordin, Azman Ma'amor, Nurhidayatullaili Muhd Julkapli
Summary: This review presents the synthesis, functionalization, and applications of carbon nanofibers (CNF) in environmental, industrial, and biomedical fields. The article highlights the importance for readers to understand the production, latest trends, and fabrication techniques of CNF to obtain efficient, cost-effective, eco-friendly, and multi-potential applications of CNF-based nanocomposites (CNFN).
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Ong Hun Tiar, Nurhidayatullaili Muhd Julkapli
Summary: The addition of coated iron oxide nanoparticles (C-IONP) in nitrile rubber matrix (NBR) resulted in a uniform and well-dispersed particle distribution. The interaction between C-IONP and NBR matrix was confirmed by significant FTIR peaks. Mechanical performance analysis showed that the tensile strength of NBR increased dramatically with the addition of C-IONP.
Article
Chemistry, Multidisciplinary
Volker Hessel, Marc Escriba-Gelonch, Svenja Schmidt, Nam Nghiep Tran, Kenneth Davey, Lina A. Al-Ani, Nurhidayatullaili Muhd Julkapli, Yasmin Abdul Wahab, Ibrahim Khalil, Meng Wai Woo, Sally Gras
Summary: Sustainability learning from conventional food process technologies can inform the development of nanofood process technologies. By applying predictive sustainability assessments based on conventional technologies, researchers can select sustainable process technologies for nanofood development. This method provides a quantitative means to incorporate sustainability into the process design of nanostructured foods.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Mohd Azam Mohd Adnan, Saba Afzal, Mohd Rafie Johan, Nurhidayatullaili Muhd Julkapli
Summary: The direct ex-situ technique successfully produced chitosan-supported TiO2 hybrid beads with improved adsorption, dispersion, and stability. Characterisation results confirmed the homogenous granular morphology and homogeneous dispersion of TiO2 nanoparticles in the CS matrix. Wet hybrid beads exhibited lower IR peak intensities and the crystallinity and phase of TiO2 were indistinguishable between wet and dry samples.
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Mohd Rashid Yusof Hamid, Nurhidayatullaili Muhd Julkapli, Mohamad Fared Murshed, Mohd Shamsul Busnak, Mohd Imran Hilmi, Mohd Azam Mohd Adnan
Summary: This study fabricated MnO2/ZnO thin films using a two-stage CBD technique and optimized the MnO2 concentration for the second stage deposition. The addition of ZnO increased the wettability and improved the thermal performance and photocatalytic activity of the thin films.
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY
(2022)
