Naeem Akram
@mul.edu.pk
Associate Professor
Minhaj University Lahore
EDUCATION
Ph.D. Chemical Engineering
RESEARCH, TEACHING, or OTHER INTERESTS
Chemical Engineering, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Environmental Engineering
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Mailidan Wumaer, Rahima Abdulla, Naeem Akram, Zhiqiang Liu, Tingxiang Chen, and Jide Wang
Elsevier BV
Changyan Guo, Yangyang Zou, Yanqiu Ma, Naeem Akram, Ali Ahmad, and Jide Wang
Royal Society of Chemistry (RSC)
The development of photocatalysts plays a pivotal role in facilitating the production of green hydrogen energy through water splitting.
Jia Guo, Naeem Akram, Liugen Zhang, Xianglei Cao, Guangyao Wang, Ali Ahmad, Junmin Niu, Muhammad Saad Mansha, Yi Zhang, and Jide Wang
Springer Science and Business Media LLC
Jia Guo, Meixia Zhu, Wenlong Mo, Yanxiong Wang, Junrong Yuan, Ronglan Wu, Junmin Niu, Kongjun Ma, Wencang Guo, Xianyong Wei,et al.
MDPI AG
Easily soluble organic components in Santanghu long flame coal (SLFC) from Hami (Xinjiang, China) were separated by CS2 and acetone mixed solvent (v/v = 1:1) under ultrasonic condition, and the extract residue was stratified by carbon tetrachloride to obtain the light raffinate component (SLFC-L). The effect of solvent treatment on the composition and structure of the coal and its rapid pyrolysis products was analyzed. Solvent treatment can reduce the moisture content in coal from 9.48% to 6.45% and increase the volatile matter from 26.59% to 28.78%, while the macromolecular structure of the coal changed slightly, demonstrating the stability of coal’s complex organic structure. Compared with raw coal, the relative contents of oxygen-containing functional groups and aromatic groups in SLFC-L are higher, and the weight loss rates of both SLFC and SLFC-L reached the maximum at about 450 °C. In contrast, the loss rate of SLFC-L is more obvious, being 33.62% higher than that of SLFC. Pyrolysis products from SLFC at 450 °C by Py-GC/MS are mainly aliphatic hydrocarbons and oxygenated compounds, and the relative contents of aliphatic hydrocarbons decreased from 48.48% to 36.13%, while the contents of oxygenates increased from 39.07% to 44.95%. Overall, the composition and functional group in the coal sample were changed after solvent treatment, resulting in a difference in the composition and distribution of its pyrolysis products.
Wen-Long Mo, Hui Kan, Ting Wu, Xiao-Bo Hu, Ya-Ya Ma, Jia Guo, Wen-Cang Guo, Xian-Yong Wei, and Naeem Akram
MDPI AG
Yinggema lignite (YL) was pretreated with isometric acetone/carbon disulfide mixed solvent to obtain the residue (RYL) and, then, RYL was separated by density difference with carbon tetrachloride to obtain the light residue (LRYL). The flash pyrolysis performances of YL and LRYL were analyzed by thermogravimetry–Fourier transform infrared spectrometer–Gas chromatography/mass spectrometer (TG-FTIR-GC/MS). The results showed that solvent pretreatment could remove some small molecules in the coal and swell the used coal, leading to the increase in pyrolysis reactivity. The intensity and absorption peak area of C=O from LRYL were significantly reduced compared to YL, resulting from the high hydrogen-donating ability of acetone. The main gaseous products of both samples are H2O, CH4, CO2, and CO; the hydrocarbons detected by GC/MS in the pyrolysis products of YL and LRYL at 450 °C were mainly alkanes, alkenes, and arenes, with the higher relative contents of alkanes of 31.1% and 36.2%, followed by arenes of 27.1% and 22.6%, respectively. The oxygen-containing compounds were mainly alcohols and phenols. It is speculated that the pretreated coal could expose more oxygen-containing functional groups, facilitating their conversion to phenolic hydroxyl groups during the pyrolysis process, resulting in more phenolic compounds.
Tao Wang, Changyan Guo, Liugen Zhang, Xianglei Cao, Yanan Niu, Jiang li, Naeem Akram, and Jide Wang
Elsevier BV
Tao Wang, Changyan Guo, Li Zhang, Liugen Zhang, Xianglei Cao, Naeem Akram, Yanan Niu, and Jide Wang
Elsevier BV
Jia Guo, Naeem Akram, Liugen Zhang, Wenlan Ma, Guangyao Wang, Yi Zhang, Ali Ahmad, and Jide Wang
Elsevier BV
Changyan Guo, Tao Wang, Li Zhang, Tingxiang Chen, Cheng Guo, Afaq Hassan, Naeem Akram, Yuli Kou, and Jide Wang
Royal Society of Chemistry (RSC)
The defective Cu-BDC photocatalysts with different defect concentration and Cu1+/Cu2+ coordinatively unsaturated sites (CUS) content were designed and synthesized by introducing defective linkers with different pKa values.
Yangyang Zou, Changyan Guo, Xianglei Cao, Tingxiang Chen, Yuli Kou, Liugen Zhang, Tao Wang, Naeem Akram, and Jide Wang
Elsevier BV
Yuli Kou, Kangkang Wang, Mailidan Wumaer, Changyan Guo, Bingren Tian, Li Zhang, Naeem Akram, and Jide Wang
Elsevier BV
Mailidan Wumaer, Rahima Abdulla, Yuli Kou, Ziran Liu, Naeem Akram, Haji Akber Aisa, and Jide Wang
MDPI AG
The hydrogenation of 4-nitrophenol (4-NP) has attracted much attention, since it is typically used as a model reaction for evaluating newly developed catalysts, but its mechanism is still debated. Herein, Co(OH)2-modified CuO catalyst (Co(OH)2/CuO) was used for the reduction of 4-NP to 4-aminophenol (4-AP) in an aqueous sodium borohydride (NaBH4) solution. The reaction mechanism was investigated by UV-Vis spectroscopy (UV-Vis), high-performance liquid chromatography (HPLC), HPLC-Q-orbitrap high-resolution mass spectrometry (LC-MS/MS), and 1HNMR spectroscopy (1HNMR) as an integrated technology at different concentrations of NaBH4. Samples were taken at specified time intervals and monitored using UV-Vis, HPLC, LC-MS/MS, and 1HNMR. With the help of comprehensive analysis, eight intermediates, including azo and azoxy compounds, were effectively captured, and the variation tendency of each intermediate was determined, revealing that the hydrogenation of 4-NP proceeds via a coexistence of the direct and condensation routes. The integrated analysis methods were powerful technical supports for the study of the catalysis mechanism.
Naeem Akram, Jia Guo, Yuan Guo, Yuli Kou, Humbul Suleman, and Jide Wang
Elsevier BV
Naeem Akram, Wenlan Ma, Jia Guo, Yuan Guo, Zhao Yansong, Afaq Hassan, and Jide Wang
Elsevier BV
Yuan Guo, Chao Feng, Shixin Wang, Yuehong Xie, Changyan Guo, Ziran Liu, Naeem Akram, Yi Zhang, Yansong Zhao, and Jide Wang
Royal Society of Chemistry (RSC)
This manuscript presents a facile paradigm for controllably developing planar-type defect-engineered metal–organic frameworks (DEMOFs) by systematically doping reductive defect linker vanillin (VAN) during the synthesis of HKUST-1.
Naeem Akram, Jia Guo, Wenlan Ma, Yuan Guo, Afaq Hassan, and Jide Wang
Springer Science and Business Media LLC
AbstractThe exploration of advanced water treatment technologies e.g. heterogeneous photocatalysis is the most promising way to address organic pollution issues. Semiconductors based bimetallic photocatalysis with wide bandgap, have displayed splendid degradation performance in the UV light region, but their extension to the visible light/near infra-red region is still a matter of great concern. CuO, Co(OH)2, CoO and Co(OH)2/CuO nanocomposites were synthesized via simple co-precipitation method and further practiced for Rhodamine B (RhB) decomposition by introducing per-sulfate (PS) as a sacrificial agent. Results revealed that Co(OH)2/CuO catalyst had shown robust catalytic activity for RhB photodegradation (degradation time 8 min, k = 0.864 min−1) under light illumination, significantly less (12–60 times) than the other reported bimetallic catalysts. Catalyst also have verified excellent performance for a broader pH range (5–9) with excellent stability. Main reactive species responsible for the photocatalytic reaction were sulfate (SO4•−) and superoxide (O2•) radicals, duly verified by ESR and by using radical scavengers. With outstanding recycling abilities, this is probably the fewer successful attempt for RhB decolorization and can be highly favorable for effluent treatment by using the synergic effect of absorption and photodegradation.
Shanshan Qiao, Chao Feng, Yuan Guo, Tingxiang Chen, Naeem Akram, Yi Zhang, Wei Wang, Fan Yue, and Jide Wang
Elsevier BV
Chao Feng, Shanshan Qiao, Yuan Guo, Yuehong Xie, Li Zhang, Naeem Akram, Shiang Li, and Jide Wang
Elsevier BV
Jia Guo, Liugen Zhang, Wenlan Ma, Tinxiang Chen, Guangyao Wang, Naeem Akram, Yi Zhang, and Jide Wang
American Chemical Society (ACS)
A kind of Co(OH)2 modified CuO nanoparticles (Co(OH)2/CuO) was found to be a robust catalyst for the water oxidation reaction (WOR) in sacrificial oxidant conditions without any photosensitizers, since this conjunction possessed both catalytic sites and visible light absorption centers. Under the synergetic effect between Co(OH)2 and CuO clusters, Co(OH)2/CuO afforded excellent high oxygen output ratio (1955 μmol•h-1•g-1). According to electron spin resonance measurements and radical capture experiments, sulfate radicals were confirmed as the main active species. The results of DFT simulations demonstrated that the Co(OH)2/CuO was the kind of metal-semiconductor complexes, which was inclined for the charge carriers to transfer across the interface efficiently and unidirectionally. Based on the locations of valence band and conduction band, the mechanism of photocatalytic WOR was proposed. We hope that this contribution will offer a useful guidance for developing efficiency photoinduced charge transfer wat...
Wenlan Ma, Jia Guo, Tingxiang Chen, Naeem Akram, Rena Simayi, and Jide Wang
American Chemical Society (ACS)
The synergistic catalysis of bimetallic catalysts is one of the important ways to improve the catalytic performance; therefore, the development of efficient bimetallic water oxidation catalysts (WOCs) has received extensive attention. This work proposed a bimetallic Fe3O4/CuO catalyst prepared in situ from the Cu–Fe Prussian blue analogues precursor, promoting Fe3O4-modified CuO as a highly efficient and stable bimetallic WOC. The Fe3O4/CuO exhibits superior and robust catalytic activity for the oxidation of water. Compared with the reported results, it has a higher O2 evolution rate of about 4406 μmol·h–1·g–1 and a maximum value for the yield of O2 as 83.2%, mainly because of the synergetic effect between Fe3O4 and CuO in the complicated water oxidation reaction (WOR) process. We hope this work will be useful for other researchers to design new transition metal bimetallic catalysts for WOR.
Chao Feng, Changyan Guo, Di Hu, Jia Guo, Xianglei Cao, Naeem Akram, and Jide Wang
Springer Science and Business Media LLC
Changyan Guo, Yonghong Zhang, Li Zhang, Yuan Guo, Naeem Akram, and Jide Wang
American Chemical Society (ACS)
A nanosized Cu3(BTC)2 (HKUST-1; BTC = 1,3,5-benzenetricarboxylate) catalyst with a size range of 10–20 nm was synthesized with 2-methylimidazole (2-MI) as an effective competitive ligand and Lewis base to tune its morphology and improve its catalytic performance simultaneously. On the one hand, the addition of 2-MI can accelerate deprotonation of the bridging ligand H3BTC, thereby accelerating the rapid nucleation of crystals, which leads to a rapid decrease of the solution supersaturation and inhibits further growth of the nucleated small crystal, resulting in nanosized HKUST-1 crystals. On the other hand, the uncoordinated 2-MI in nano-HKUST-1 can improve the catalytic performance of the crystal because of its basicity. Further catalytic experiments demonstrate that nano-HKUST-1 showed high catalytic activity compared with bulk HKUST-1 in the controllable oxidation of styrene under solvent-free conditions. More importantly, both benzaldehydes and benzoic acids were successfully obtained via a facile var...
Jia Guo, Hui Li, Di Wang, Liugen Zhang, Yuhua Ma, Naeem Akram, Yi Zhang, and Jide Wang
Royal Society of Chemistry (RSC)
Co(OH)2-modified CuO (Co(OH)2/CuO) nanoparticles serve as both visible-light-driven water oxidation catalysts and visible-light-absorption centers.
Chao Feng, Xianglei Cao, Liugen Zhang, Changyan Guo, Naeem Akram, and Jide Wang
Royal Society of Chemistry (RSC)
[Zn3(BTC)2], a heterogeneous catalyst, can efficiently catalyze the cycloaddition reaction. Under relatively moderate and solvent-free conditions, the yield of cyclic carbonate reached 99%.