1
|
Ahmed MS, Qamar M, Waqar S, Naeem A, Javaid RA, Tanveer SK, Hussain I. Estimation of genetic components, heterosis and combining ability of elite Pakistani wheat varieties for yield attributing traits and stripe rust response. Vavilovskii Zhurnal Genet Selektsii 2023; 27:609-622. [PMID: 37965373 PMCID: PMC10641056 DOI: 10.18699/vjgb-23-72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/09/2023] [Accepted: 03/09/2023] [Indexed: 11/16/2023] Open
Abstract
Wheat (Triticum aestivum L.) is a staple food and major source of dietary calories in Pakistan. Improving wheat varieties with higher grain yield and disease resistance is a prime objective. The knowledge of genetic behaviour of germplasm is key. To achieve this objective, elite wheat varieties were crossed in 4 by 3, line × tester design, and tested in 2019 in a triplicate yield trial to estimate genetic variance, general and specific combining ability, mid-parent heterosis and stripe rust (Puccinia striiformis L.). High grain 3358 kg·ha-1 was recorded in F1 hybrid (ZRG-79 × PAK-13). Analysis of variance (ANOVA) revealed significant genotypic variance in grain yield. Broad sense heritability (H2) was recorded in the range of 28 to 100 %. General combining ability (GCA) significant for grain yield in parents except FSD-08 and PS-05 was recorded, while specific combining ability (SCA) was recorded to be highly significant for grain yield only in two crosses (ZRG-79 × NR-09 and ZRG-79 × PAK-13). Mid-parent heterosis was estimated in the range of -28 to 62.6 %. Cross combinations ZRG-79 × PAK-13 depicted highly significant mid-parent heterosis (62.6 %). Highly significant correlation was observed among spike length, spikelets per spike, plant height and 1000-grain weight. Rust resistance index was recorded in the range of 0 to 8.5. These findings suggest exploitation of GCA for higher grain yield is important due to the presence of additive gene action and selection in the filial generations will be effective with improved rust resistance, while cross combinations ZRG-79 × PAK-13 high GCA are best suited for hybrid development.
Collapse
Affiliation(s)
- M S Ahmed
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan Rice Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - M Qamar
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - S Waqar
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - A Naeem
- Rice Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - R A Javaid
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - S K Tanveer
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| | - I Hussain
- Wheat Program, Crop Sciences Institute, National Agricultural Research Center, Islamabad, Pakistan
| |
Collapse
|
2
|
Qamar M. Borlaug 2016: a high yielding wheat variety for the rainfed/irrigated areas of Pakistan. PAB 2023. [DOI: 10.19045/bspab.2023.120023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
3
|
Qamar M, Xiao Qi G, Ahmad S. PIH9 Quantification Of Sleep Quality Among Older Adults In The State Of Penang, Malaysia. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
4
|
Qamar M, Ayaz M, Nazir M. Isolation and identification of ectoparasites in single humped camels (Camelus dromedarius) of Cholistan area, Pakistan. IJVS 2019. [DOI: 10.33899/ijvs.2019.153866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
5
|
Qamar M, Ahmed MI, Qamaruddin M, Asif M, Sanhoob M, Muraza O, Khan MY. A Mesopore-Dependent Catalytic Cracking of n-Hexane Over Mesoporous Nanostructured ZSM-5. J Nanosci Nanotechnol 2018; 18:5711-5720. [PMID: 29458630 DOI: 10.1166/jnn.2018.15384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, pore size, crystalinity, and Si/Al ratio of mesoporous ZSM-5 (MFI) nanocrystals was controlled by synthesis parameters, such as surfactant concentration ([3-(trimethoxysilyl)propyl] hexa-decyl dimethyl ammonium chloride), sodium hydroxide concentrations, synthesis temperature and time. The morphology, surface structure and composition of the MFI particles was systematically investigated. More notably, the mesopore-dependent catalytic activity of ZSM-5 was evaluated by studying the cracking of n-hexane. The findings suggest the porosity has pronounced impact on the catalytic activity, selectivity and stability of ZSM-5 nanocrystals. Critical surface attributes such as nature of acid sites (Brønsted and Lewis), concentration, and strength are obtained by the infrared study of adsorbed probe molecules (pyridine) and the temperature programmed desorption. In spite of being weaker in Si/Al ratio or acidic strength, mesoporous catalysts showed more stable and efficient cracking of n-hexane suggesting that acidity seems not the predominant factor operative in the activity, selectivity and stability.
Collapse
Affiliation(s)
- M Qamar
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M I Ahmed
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M Qamaruddin
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M Asif
- Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M Sanhoob
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - O Muraza
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M Y Khan
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| |
Collapse
|
6
|
Reynolds MP, Pask AJD, Hoppitt WJE, Sonder K, Sukumaran S, Molero G, Pierre CS, Payne T, Singh RP, Braun HJ, Gonzalez FG, Terrile II, Barma NCD, Hakim A, He Z, Fan Z, Novoselovic D, Maghraby M, Gad KIM, Galal EG, Hagras A, Mohamed MM, Morad AFA, Kumar U, Singh GP, Naik R, Kalappanavar IK, Biradar S, Sai Prasad SV, Chatrath R, Sharma I, Panchabhai K, Sohu VS, Mavi GS, Mishra VK, Balasubramaniam A, Jalal-Kamali MR, Khodarahmi M, Dastfal M, Tabib-Ghaffari SM, Jafarby J, Nikzad AR, Moghaddam HA, Ghojogh H, Mehraban A, Solís-Moya E, Camacho-Casas MA, Figueroa-López P, Ireta-Moreno J, Alvarado-Padilla JI, Borbón-Gracia A, Torres A, Quiche YN, Upadhyay SR, Pandey D, Imtiaz M, Rehman MU, Hussain M, Hussain M, Ud-Din R, Qamar M, Sohail M, Mujahid MY, Ahmad G, Khan AJ, Sial MA, Mustatea P, von Well E, Ncala M, de Groot S, Hussein AHA, Tahir ISA, Idris AAM, Elamein HMM, Manes Y, Joshi AK. Correction to: Strategic crossing of biomass and harvest index-source and sink-achieves genetic gains in wheat. Euphytica 2018; 214:9. [PMID: 31187787 DOI: 10.1007/s10681-017-2040-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 10/13/2017] [Indexed: 05/22/2023]
Abstract
[This corrects the article DOI: 10.1007/s10681-017-2040-z.].
Collapse
Affiliation(s)
- Matthew P Reynolds
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Alistair J D Pask
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | | | - Kai Sonder
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Sivakumar Sukumaran
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Gemma Molero
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Carolina Saint Pierre
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Thomas Payne
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Ravi P Singh
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Hans J Braun
- 1International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | | | - Ignacio I Terrile
- 3Instituto Nacional de Tecnología Agropecuaria, Pergamino, Argentina
| | - Naresh C D Barma
- 4Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | - Abdul Hakim
- 4Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | | | - Zheru Fan
- 6Xinjiang Academy of Agricultural Science, Wulumuqi, China
| | | | | | | | | | - Adel Hagras
- Field Crops Research Institute, Cairo, Egypt
| | | | | | | | | | - Rudra Naik
- 12University of Agricultural Sciences, Dharwad, India
| | | | - Suma Biradar
- 12University of Agricultural Sciences, Dharwad, India
| | | | - Ravish Chatrath
- Indian Institute of Wheat and Barley Research, Karnal, India
| | - Indu Sharma
- Indian Institute of Wheat and Barley Research, Karnal, India
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Ernesto Solís-Moya
- 21Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | - Miguel A Camacho-Casas
- 21Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | - Pedro Figueroa-López
- 21Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | - Javier Ireta-Moreno
- 21Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | | | - Alberto Borbón-Gracia
- 21Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | | | | | | | - Deepak Pandey
- Nepal Agriculture Research Council, Bhairahawa, Nepal
| | | | | | - Manzoor Hussain
- Regional Agricultural Research Institute, Bahawalpur, Pakistan
| | - Makhdoom Hussain
- 26Wheat Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Riaz Ud-Din
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Maqsood Qamar
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Muhammad Sohail
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Muhammad Y Mujahid
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Gulzar Ahmad
- Cereal Crop Research Institute, Nowshera-Pirsabak, Pakistan
| | - Abdul J Khan
- Nuclear Institute for Food and Agriculture, Tarnab-Peshawar, Pakistan
| | | | - Pompiliu Mustatea
- National Agricultural Research and Development Institute, Fundulea, Romania
| | | | - Moses Ncala
- Small Grain Institute, Bethlehem, South Africa
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Reynolds MP, Pask AJD, Hoppitt WJE, Sonder K, Sukumaran S, Molero G, Pierre CS, Payne T, Singh RP, Braun HJ, Gonzalez FG, Terrile II, Barma NCD, Hakim A, He Z, Fan Z, Novoselovic D, Maghraby M, Gad KIM, Galal EG, Hagras A, Mohamed MM, Morad AFA, Kumar U, Singh GP, Naik R, Kalappanavar IK, Biradar S, Sai Prasad SV, Chatrath R, Sharma I, Panchabhai K, Sohu VS, Mavi GS, Mishra VK, Balasubramaniam A, Jalal-Kamali MR, Khodarahmi M, Dastfal M, Tabib-Ghaffari SM, Jafarby J, Nikzad AR, Moghaddam HA, Ghojogh H, Mehraban A, Solís-Moya E, Camacho-Casas MA, Figueroa-López P, Ireta-Moreno J, Alvarado-Padilla JI, Borbón-Gracia A, Torres A, Quiche YN, Upadhyay SR, Pandey D, Imtiaz M, Rehman MU, Hussain M, Hussain M, Ud-Din R, Qamar M, Sohail M, Mujahid MY, Ahmad G, Khan AJ, Sial MA, Mustatea P, von Well E, Ncala M, de Groot S, Hussein AHA, Tahir ISA, Idris AAM, Elamein HMM, Manes Y, Joshi AK. Correction to: Strategic crossing of biomass and harvest index-source and sink-achieves genetic gains in wheat. Euphytica 2017; 214:9. [PMID: 31187787 PMCID: PMC6445510 DOI: 10.1007/s10681-017-2086-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 10/13/2017] [Indexed: 05/24/2023]
Abstract
[This corrects the article DOI: 10.1007/s10681-017-2040-z.].
Collapse
Affiliation(s)
- Matthew P. Reynolds
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Alistair J. D. Pask
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | | | - Kai Sonder
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Sivakumar Sukumaran
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Gemma Molero
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Carolina Saint Pierre
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Thomas Payne
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Ravi P. Singh
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | - Hans J. Braun
- International Maize and Wheat Improvement Center (CIMMYT), Apdo, 6-641, 06600 Mexico, DF Mexico
| | | | | | | | - Abdul Hakim
- Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
| | | | - Zheru Fan
- Xinjiang Academy of Agricultural Science, Wulumuqi, China
| | | | | | | | | | - Adel Hagras
- Field Crops Research Institute, Cairo, Egypt
| | | | | | | | | | - Rudra Naik
- University of Agricultural Sciences, Dharwad, India
| | | | - Suma Biradar
- University of Agricultural Sciences, Dharwad, India
| | | | - Ravish Chatrath
- Indian Institute of Wheat and Barley Research, Karnal, India
| | - Indu Sharma
- Indian Institute of Wheat and Barley Research, Karnal, India
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Ernesto Solís-Moya
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | | | - Pedro Figueroa-López
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | - Javier Ireta-Moreno
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | | | - Alberto Borbón-Gracia
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico, Mexico
| | | | | | | | - Deepak Pandey
- Nepal Agriculture Research Council, Bhairahawa, Nepal
| | | | | | - Manzoor Hussain
- Regional Agricultural Research Institute, Bahawalpur, Pakistan
| | - Makhdoom Hussain
- Wheat Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Riaz Ud-Din
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Maqsood Qamar
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Muhammad Sohail
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Muhammad Y. Mujahid
- Crop Sciences Research Institute, National Agricultural Research Council, Islamabad, Pakistan
| | - Gulzar Ahmad
- Cereal Crop Research Institute, Nowshera-Pirsabak, Pakistan
| | - Abdul J. Khan
- Nuclear Institute for Food and Agriculture, Tarnab-Peshawar, Pakistan
| | | | - Pompiliu Mustatea
- National Agricultural Research and Development Institute, Fundulea, Romania
| | | | - Moses Ncala
- Small Grain Institute, Bethlehem, South Africa
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Hussain MF, Qamar M, Malik MI, Hussain M, Saeed Z, Shaikh RS, Iqbal F. Molecular detection of Anaplasma in apparently healthy Cholistan breed of cattle from the Bahawalpur district, Pakistan. Trop Biomed 2017; 34:37-44. [PMID: 33592978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The present study was designed to report the prevalence of Anaplasma sp. in blood samples of Cholistan breed of cattle from Bahawalpur District and to determine the risk factors associated with the prevalence of this parasite. A total of 148 blood samples were randomly collected from apparently healthy cattle. On the sampling sites, data on the characteristics of the animals (species, gender, age) were collected through questionnaires. 47 blood samples (31.8% of total) produced the 577 base pairs DNA fragment specific for 16S rRNA gene of Anaplasma sp. by PCR amplification. Out of 47 Anaplasma sp. positive PCR products, 9 were found to be Anaplasma marginale by restriction with BssNa1 and 9 were confirmed to be Anaplasma phagocytophilum (A. phagocytophilum) as they amplified 550 bp fragment from the amplified MSP 2 gene of this species. Risk factor analysis indicated that the presence of parasite was not limited to a particular sex or age group of the infected animals. Comparison of hematological profile revealed that Anaplasma sp. positive cattle had significantly reduced levels of mean corpuscular volume (P=0.02) and eosinophils (P=0.02) than in parasite negative animals. While studied serum biochemical profile remain unaffected when compared between the two groups.
Collapse
Affiliation(s)
- M F Hussain
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
| | - M Qamar
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
| | - M I Malik
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
| | - M Hussain
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
- Livestock and Dairy Development Department, Punjab, Pakistan
| | - Z Saeed
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
- Livestock and Dairy Development Department, Punjab, Pakistan
| | - R S Shaikh
- Institute of Molecular Biology and Biotechnology. Bahauddin Zakariya University Multan 60800, Pakistan
| | - F Iqbal
- Institute of Pure and Applied Biology, Zoology Division, Bahauddin Zakariya University Multan 60800, Pakistan
| |
Collapse
|
9
|
Khan A, Ahmed MI, Adam A, Azad AM, Qamar M. A novel fabrication methodology for sulfur-doped ZnO nanorods as an active photoanode for improved water oxidation in visible-light regime. Nanotechnology 2017; 28:055602. [PMID: 28029100 DOI: 10.1088/1361-6528/aa51b6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Incorporation of foreign moiety in the lattice of semiconductors significantly alters their optoelectronic behavior and opens a plethora of new applications. In this paper, we report the synthesis of sulfur-doped zinc oxide (S-doped ZnO) nanorods by reacting ZnO nanorods with diammonium sulfide in vapor phase. Microscopic investigation revealed that the morphological features, such as, the length (2-4 μm) and width (100-250 nm) of the original hexagonal ZnO nanorods remained intact post-sulfidation. X-ray photoelectron spectroscopy analysis of the sulfide sample confirmed the incorporation of sulfur into ZnO lattice. The optical measurements suggested the extension of absorption threshold into visible region upon sulfidation. Photoelectrochemical (PEC) activities of pure and S-doped ZnO nanorods were compared for water oxidation in visible light (λ > 420 nm), which showed several-fold increment in the performance of S-doped ZnO sample; the observed amelioration in the PEC activity was rationalized in terms of preferred visible light absorption and low resistance of sulfide sample, as evidenced by optical and electrochemical impedance spectroscopy.
Collapse
Affiliation(s)
- A Khan
- Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | | | | | | | | |
Collapse
|
10
|
Qamar M, Fawakhiry MO, Azad AM, Ahmed MI, Khan A, Saleh TA. Selective photocatalytic oxidation of aromatic alcohols into aldehydes by tungsten blue oxide (TBO) anchored with Pt nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra11841k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hypostoichiometric Pt/WO3 shows efficient, selective and stable conversion of aromatic alcohols into corresponding aldehydes under simulated sunlight in aqueous solution.
Collapse
Affiliation(s)
- M. Qamar
- Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Kingdom of Saudi Arabia
| | - M. O. Fawakhiry
- Department of Chemistry
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Kingdom of Saudi Arabia
| | | | - M. I. Ahmed
- Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Kingdom of Saudi Arabia
| | - A. Khan
- Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Kingdom of Saudi Arabia
| | - T. A. Saleh
- Department of Chemistry
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Kingdom of Saudi Arabia
| |
Collapse
|
11
|
Qamar M, Alhooshani K, Ahmed M, Azad AM, Merzougui B. Amelioration in the visible-light-driven photocatalysis by < 002 > faceted WO3 nanocuboids. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
12
|
Qamar M, Abdalwadoud M, Ahmed MI, Azad AM, Merzougui B, Bukola S, Yamani ZH, Siddiqui MN. Single-Pot Synthesis of ⟨001⟩-Faceted N-Doped Nb2O5/Reduced Graphene Oxide Nanocomposite for Efficient Photoelectrochemical Water Splitting. ACS Appl Mater Interfaces 2015; 7:17954-17962. [PMID: 26240950 DOI: 10.1021/acsami.5b04667] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Due to exciting catalytic activity and selectivity, tailoring of nanocatalysts consisting of preferred crystal facets and desired structural properties remains at the forefront of materials engineering. A facile one-step nonhydrolytic solvothermal synthesis of a nanocomposite of reduced graphene oxide and one-dimensional nitrogen-doped Nb2O5 (N-NbOx) with exposed ⟨001⟩ facet is described. Triethylamine performed the dual role as nitrogen source and capping agent to control the size and unidirectional growth of Nb2O5 nanocrystallites. The nanocomposite showed efficient visible-light-mediated (λ > 420 nm) water splitting in a photoelectrochemical cell. A plausible mechanism for the formation of N-NbOx nanorods and improved photoelectrochemical efficacy in terms of their oriented growth is proposed.
Collapse
Affiliation(s)
- M Qamar
- †Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M Abdalwadoud
- ‡Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M I Ahmed
- †Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - A-M Azad
- †Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | | | - S Bukola
- †Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - Z H Yamani
- †Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| | - M N Siddiqui
- ‡Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia
| |
Collapse
|
13
|
Qamar M, Gourier H, Hawkins M, Hompes R, Muirhead R. PO-0692: Role of neo-adjuvant radiotherapy in rectal cancer - less is more? Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40684-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
14
|
Qamar M, Elsayed RB, Alhooshani KR, Ahmed MI, Bahnemann DW. Highly efficient and selective oxidation of aromatic alcohols photocatalyzed by nanoporous hierarchical Pt/Bi2WO6 in organic solvent-free environment. ACS Appl Mater Interfaces 2015; 7:1257-1269. [PMID: 25535646 DOI: 10.1021/am507428r] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Selective conversion of aromatic alcohols into corresponding aldehydes is important from energy and environmental stance. Here, we describe highly selective (>99%) and efficient conversion (>99%) of aromatic alcohols (e.g., 4-methoxybenzyl alcohol and 4-nitrobenzyl alcohol) into their corresponding aldehydes in the presence of Pt-modified nanoporous hierarchical Bi2WO6 spheres in water under simulated sunlight at ambient conditions. Overoxidation of p-anisaldehyde, formed during photooxidation process, was not observed until comprehensive alcohol oxidation was attained. Furthermore, the catalyst showed substantial oxidation under dark and course of conversion was different than that of under light. Dependency of alcohol oxidation on substrate concentration, photocatalyst amount, and Pt loading was studied. The effect of various radical scavengers was investigated, and the rate-determining step was elucidated. It has been envisaged that the reduction site of semiconductor photocatalysts plays more decisive role in determining the selectivity as alcohol preferably get oxidized over that of water. Furthermore, the chemical stability and recyclability of the photocatalyst were investigated.
Collapse
Affiliation(s)
- M Qamar
- Center of Excellence in Nanotechnology (CENT), ‡Department of Chemistry, King Fahd University of Petroleum and Minerals , Dhahran 31261, Kingdom of Saudi Arabia
| | | | | | | | | |
Collapse
|
15
|
Qamar M, Elsayed R, Alhooshani K, Ahmed M, Bahnemann D. Chemoselective and highly efficient conversion of aromatic alcohols into aldehydes photo-catalyzed by Ag3PO4 in aqueous suspension under simulated sunlight. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.08.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
16
|
Qamar M, Merzougui B, Anjum D, Hakeem A, Yamani Z, Bahnemann D. Synthesis and photocatalytic activity of mesoporous nanocrystalline Fe-doped titanium dioxide. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.040] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
17
|
|
18
|
Qamar M, Gondal M, Yamani Z. Synthesis of nanostructured NiO and its application in laser-induced photocatalytic reduction of Cr(VI) from water. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.03.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
19
|
Qamar M, Gondal MA, Yamani ZH. Laser-induced efficient reduction of Cr(VI) catalyzed by ZnO nanoparticles. J Hazard Mater 2011; 187:258-263. [PMID: 21269766 DOI: 10.1016/j.jhazmat.2011.01.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2010] [Revised: 12/19/2010] [Accepted: 01/05/2011] [Indexed: 05/30/2023]
Abstract
The present study demonstrates the complete removal of Cr(VI) in aqueous suspensions of zinc oxide nanoparticles using a novel laser-induced photocatalytic process without the use of any additive. The study showed that ∼95% Cr(VI) was removed within short time (60 min) of laser exposure in the presence of ZnO. However, the removal of chromium using conventional setup under identical conditions was found to be negligible. Effect of critical parameters, such as laser energy, catalyst concentration, chromium concentration, and added electron donor and acceptor on the photocatalytic reduction process was also investigated. The data regarding temporal behavior of metal removal was fitted to first-order kinetic and reaction rate was computed.
Collapse
Affiliation(s)
- M Qamar
- Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, KFUPM Box 741, Dhahran 31261, Saudi Arabia.
| | | | | |
Collapse
|
20
|
Qamar M, Kim SJ, Ganguli AK. TiO2-based nanotubes modified with nickel: synthesis, properties, and improved photocatalytic activity. Nanotechnology 2009; 20:455703. [PMID: 19834243 DOI: 10.1088/0957-4484/20/45/455703] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Titanate nanotubes containing 2.5 wt% Ni were synthesized from TiO2 sol using alkali hydrothermal treatment followed by a simple ion-exchange process. The changes in phase, shape and morphology, surface area, and photocatalytic activity of these nanotubes have been explored as a function of calcination temperature. The samples were characterized using standard techniques, including x-ray diffraction, transmission electron microscopy, scanning electron microscopy, inductively coupled plasma spectrometry, energy dispersive x-ray spectroscopy, and Brauner-Emmett-Teller surface area analysis. The study revealed that the titanate phase containing Ni ions can be converted to the anatase phase after certain heat treatments but, at the same time, the tubular morphology was partially lost. Investigation of photocatalytic properties demonstrated that the as-prepared Ni-titanate nanotubes were photocatalytically inactive, but when heated at temperatures below 500 degrees C their activity was significantly enhanced with the change in phase. The calcined nanotube samples carrying nickel ion showed better photocatalytic activity than calcined nanotube samples containing protons. The hydrogen adsorption capacity of these titanates has also been measured, and it was found that Ni-titanate nanotubes can adsorb more hydrogen than its counterpart Na-titanate.
Collapse
Affiliation(s)
- M Qamar
- Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | | | | |
Collapse
|
21
|
Qamar M, Gondal MA, Hayat K, Yamani ZH, Al-Hooshani K. Laser-induced removal of a dye C.I. Acid Red 87 using n-type WO3 semiconductor catalyst. J Hazard Mater 2009; 170:584-589. [PMID: 19540669 DOI: 10.1016/j.jhazmat.2009.05.099] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 03/23/2009] [Accepted: 05/04/2009] [Indexed: 05/27/2023]
Abstract
Water contamination by organic substances such as dyes is of great concern worldwide due to their utilization in many industrial processes and environmental concerns. To cater the needs for waste water treatment polluted with organic dyes, laser-induced photocatalytic process was investigated for removal of a dye derivative namely Acid Red 87 using n-type WO3 semiconductor catalyst. The degradation was investigated in aqueous suspensions of tungsten oxide under different experimental conditions using laser instead of conventional UV lamp as an irradiation source. The degradation process was monitored by measuring the change in dye concentration as a function of laser irradiation time by employing UV spectroscopic analysis. The degradation of dye was studied by varying different parameters such as laser energy, reaction pH, substrate concentration, catalyst concentration, and in the presence of electron acceptors such as hydrogen peroxide (H2O2), and potassium bromate (KBrO3). The degradation rates were found to be strongly dependent on all the above-mentioned parameters. Our experimental results revealed that the dye degradation process was very fast (within few minutes) under laser irradiation as compared to conventional setups using broad spectral lamps (hours or days) and this laser-induced photocatalytic degradation method could be an effective means to eliminate the pollutants present in liquid phase. The experience gained through this study could be beneficial for treatment of waste water contaminated with organic dyes and other organic pollutants.
Collapse
Affiliation(s)
- M Qamar
- Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, KFUPM Box 741, Dhahran 31261, Saudi Arabia
| | | | | | | | | |
Collapse
|
22
|
Qamar M, Muneer M, Bahnemann D. Heterogeneous photocatalysed degradation of two selected pesticide derivatives, triclopyr and daminozid in aqueous suspensions of titanium dioxide. J Environ Manage 2006; 80:99-106. [PMID: 16359776 DOI: 10.1016/j.jenvman.2005.09.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2004] [Revised: 09/13/2005] [Accepted: 09/14/2005] [Indexed: 05/05/2023]
Abstract
Heterogeneous photocatalysed degradation of two selected pesticide derivatives, triclopyr (1) and daminozid (2), has been investigated in aqueous suspensions of titanium dioxide by monitoring the change in substrate concentration employing the UV Spectroscopic analysis technique and depletion of Total Organic Carbon (TOC) content as a function of irradiation time. The degradation kinetics were studied under different conditions such as reaction pH, substrate and catalyst concentration, different types of TiO2 and in the presence of electron acceptors such as hydrogen peroxide (H2O2), potassium bromate (KBrO3) and ammonium persulphate (NH4)2S2O8 in addition to molecular oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 was found to be more efficient as compared with other photocatalysts. The pesticide derivative triclopyr (1) was found to degrade faster as compared to daminozid (2). An attempt was also made to identify the intermediate products formed during the photooxidation process using GC/MS analysis. Probable pathways for the formation of products have been proposed.
Collapse
Affiliation(s)
- M Qamar
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India
| | | | | |
Collapse
|
23
|
|
24
|
Muneer M, Qamar M, Saquib M, Bahnemann DW. Heterogeneous photocatalysed reaction of three selected pesticide derivatives, propham, propachlor and tebuthiuron in aqueous suspensions of titanium dioxide. Chemosphere 2005; 61:457-68. [PMID: 16202799 DOI: 10.1016/j.chemosphere.2005.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2004] [Revised: 02/23/2005] [Accepted: 03/07/2005] [Indexed: 05/04/2023]
Abstract
Heterogeneous photocatalysed reaction of three selected pesticide derivatives such as propham (1), propachlor (2) and tebuthiuron (3) has been investigated in aqueous suspensions of titanium dioxide by monitoring the change in substrate concentration employing UV Spectroscopic analysis and depletion in Total Organic Carbon (TOC) content as a function of irradiation time. The degradation kinetics was studied under different conditions such as pH, catalyst concentration, substrate concentration, different types of TiO(2) and in the presence of electron acceptors such as hydrogen peroxide (H(2)O(2)), potassium bromate (KBrO(3)) and ammonium persulphate (NH(4))(2)S(2)O(8) besides molecular oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 was found to be more efficient as compared with other photocatalysts. The pesticide derivative propham (1) was found to degrade faster as compared to propachlor (2) and tebuthiuron (3). An attempt has also been made to identify the products formed during the photooxidation process through GC/MS analysis technique. All the model pollutants showed the formation of several intermediate products, which were identified on the basis of molecular ion and mass spectrometric fragmentation pattern. A probable mechanism for the formation of the products has been proposed.
Collapse
Affiliation(s)
- M Muneer
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, U.P. 202002, India.
| | | | | | | |
Collapse
|
25
|
Muneer M, Qamar M, Bahnemann D. Photoinduced electron transfer reaction of few selected organic systems in presence of titanium dioxide. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.molcata.2005.02.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
26
|
Qamar M, Muneer M. Comparative photocatalytic study of two selected pesticide derivatives, indole-3-acetic acid and indole-3-butyric acid in aqueous suspensions of titanium dioxide. J Hazard Mater 2005; 120:219-227. [PMID: 15811684 DOI: 10.1016/j.jhazmat.2005.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2004] [Revised: 01/12/2005] [Accepted: 01/13/2005] [Indexed: 05/24/2023]
Abstract
Heterogeneous photocatalysed degradation of two selected pesticide derivatives such as indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) has been investigated in aqueous suspensions of titanium dioxide by monitoring the change in substrate concentration employing UV spectroscopic analysis technique and depletion in total organic carbon (TOC) content as a function of irradiation time. The degradation kinetics was studied under different conditions such as pH, types of TiO2) substrate and catalyst concentration, and in the presence of electron acceptor such as hydrogen peroxide (H2O2) besides molecular oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 showed comparatively highest photocatalytics. The pesticide derivative, indole-3-acetic acid was found to degrade slightly faster than indole-3-butyric acid.
Collapse
Affiliation(s)
- M Qamar
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | | |
Collapse
|
27
|
Muneer M, Saquib M, Qamar M, Bahnemann D. Titanium-dioxide-mediated photocatalysis reaction of three selected pesticide derivatives. Res Chem Intermed 2004. [DOI: 10.1163/1568567041570320] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
28
|
Abstract
The volume flow rate of blood in the portal vein was measured using a duplex ultrasound system. The many errors inherent in the duplex method were assessed with particular reference to the portal vein and appropriate correction factors were obtained by in vitro calibration. The effect of posture on flow was investigated by examining 45 healthy volunteers in three different positions; standing, supine and tilted head down at 20 degrees from the horizontal. The mean volume blood flow in the supine position was 864 (188)ml/min (mean 1SD). When standing, the mean volume blood flow was significantly reduced by 26% to 662 (169)ml/min. There was, however, no significant difference between flow when supine and when tilted head down at 20 degrees from the horizontal.
Collapse
Affiliation(s)
- H S Brown
- Department of Medical Physics, Bristol and Weston Health Authority
| | | | | | | | | | | |
Collapse
|