V. Pushpa Manjari, T. Aswani, B. Babu, G. Thirumala Rao, R. Joyce Stella, B. Jaya Raja, R.V.S.S.N. Ravikumar, EPR and Optical studies of Cr(III) ions doped NaCaAlPO4F3 nanophosphor, International Journal of Current Engineering and Technology, Special Issue-2 (2014) 259-264.

B. Sekhar, Sk. Muntaz Begum, Y. Srinivasa Rao, G. Thirumala Rao, M.C. Rao, R.V.S.S.N. Ravikumar, Applications of Transition metal ions doped PVA capped CdSe nanopolymers, ICSEMF-2015 conference proceedings, ISBN 978-1-329-77555-8 (e-book).

G. Srinivasa Rao, G. Thirumala Rao, B. Sailaja, P. Narayana Murthy, N. Madhu, R.V.S.S.N. Ravikumar, Physical and Structural Properties of Fe3+ Doped Alkali Borate Glasses, International Journal of Advanced Research in Physical Science 2 (2015) 41-45.

R. Nagaraja, V. Pushpa Manjari, G. Thirumala Rao, B. Sailaja, R.V.S.S.N. Ravikumar, Spectroscopic Studies on Dy3+ Ions Doped NaCaAlPO4F3 Phosphor for Luminescent Applications, International Journal of Science and Research (IJSR), 6 (2017) 311-319.

N. Santhosh Kumar, D. Govinda, G. Thirumala Rao, Synthesis, Structural and Morphological Studies of CdS Nanopowder, International Journal of Chemical Sciences, 15 (2017) 409-414.

T. Aswani, B. Babu, V. Pushpa Manjari, R. Joyce Stella, G. Thirumala Rao, Ch. Rama Krishna, R.V.S.S.N. Ravikumar, Synthesis and spectral characterizations of trivalent ions (Cr3+, Fe3+) doped CdO nanopowders, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 121 (2014) 544-550.

B. Babu, T. Aswani, G. Thirumala Rao, R. Joyce Stella, B. Jayaraja, R.V.S.S.N. Ravikumar, Room temperature ferromagnetism and optical properties of Cu2+ doped ZnO nanopowder by ultrasound assisted solid state reaction technique, Journal of Magnetism and Magnetic Materials 355 (2014) 76-80.

B. Babu, V. Pushpa Manjari, T. Aswani, G. Thirumala Rao, R. Joyce Stella, R.V.S.S.N. Ravikumar, Structural, optical and magnetic properties of Cr3+ doped ZnO nanopowder, Indian Journal of Physics 88 (2014) 683-690.

B. Babu, G. Thirumala Rao, V. Pushpa Manjari, K. Ravindranadh, R. Joyce Stella, R.V.S.S.N. Ravikumar, Sonochemical assisted synthesis and spectroscopic characterization of Fe3+ doped ZnO diluted magnetic semiconductor, Journal of Materials Science: Materials in Electronics 25 (2014) 4179-4186.

K. Ravindranadh, B. Babu, V. Pushpa Manjari, G. Thirumala Rao, M.C. Rao, R.V.S.S.N. Ravikumar, Optical and Structural Properties of Undoped and Mn2+ doped Ca-Li Hydroxyapatite Nanopowders using Mechanochemical Synthesis, Journal of Luminescence 159 (2015) 119-127.

R. Joyce Stella, G. Thirumala Rao, V. Pushpa Manjari, B. Babu, R.V.S.S.N. Ravikumar, Structural and Optical Properties of CdO/ZnS core/shell nanocomposites, Journal of Alloys and Compounds 628 (2015) 39-45.

R. Joyce Stella, G. Thirumala Rao, B. Babu, V. Pushpa Manjari, Ch. Venkata Reddy, Jaesool Shim, R.V.S.S.N. Ravikumar, A Facile Synthesis and Spectral Characterization of Cu2+ Doped CdO/ZnS Nanocomposite, Journal of Magnetism and Magnetic Materials 384 (2015) 6-12.

B. Sailaja, R. Joyce Stella, G. Thirumala Rao, B. Jaya Raja, V. Pushpa Manjari, R.V.S.S.N. Ravikumar, Physical, Structural and Spectroscopic Investigations of Sm3+ doped ZnO mixed alkali borate glass, Journal of Molecular Structure 1096 (2015) 129–135.

B. Babu, A.N. Kadam, G. Thirumala Rao, Sang-Wha Lee, Chan Byon, Jaesool Shim, Enhancement of visible-light-driven photoresponse of Mn-doped SnO2 quantum dots obtained by rapid and energy efficient synthesis, Journal of Luminescence, 195 (2018) 283-289.

Chintada Vinodbabu, G. Thirumala Rao, N. Bakthavatchala Reddy, Grigory V. Zyryanov, A review on magnetron sputter coatings, AIP Conference Proceedings 2280 (2020) 040052.

Vinod Babu Chintada, Ramji Koona, Thirumala Rao Gurugubelli, Investigation on microhardness and corrosion resistance of ZnO reinforced Ni-P composite coatings at various annealing temperatures, Advances in Materials and Processing Technologies 8 (2021) 945-958.

Bathula Babu, Bhusankar Talluri, Thirumala Rao Gurugubelli, Jonghoon Kim, Kisoo Yoo, Effect of annealing environment on the photoelectrochemical water oxidation and electrochemical supercapacitor performance of SnO2 quantum dots, Chemosphere 286 (2022) 131577.

Dhilleswara Rao Vaddi, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu, Dong-Yeon Lee, Jaesool Shim, Bio-Stimulated Adsorption of Cr(VI) from Aqueous Solution by Groundnut Shell Activated Carbon@Al Embedded Material, Catalysts 12 (2022) 290.

Govinda Dharmana, Thirumala Rao Gurugubelli, Prabhakara Srinivasa Rao Masabattula, Bathula Babu, Kisoo Yoo, Facile Synthesis, Characterization, and Photocatalytic Activity of Hydrothermally Grown Cu2+-Doped ZnO–SnS Nanocomposites for MB Dye Degradation, Catalysts 12 (2022) 328.

Lakshmiprasad Maddi, Thirumala Rao Gurugubelli, Synthesis of Co2+ doped Cadmium borate nanopowder for luminescent applications, IOP Conf. Series: Materials Science and Engineering 1263 (2022) 012013.

Babu Bathula, Thirumala Rao Gurugubelli, Jihyung Yoo, Kisoo Yoo, Recent Progress in the Use of SnO2 Quantum Dots: From Synthesis to Photocatalytic Applications, Catalysts 13 (2023) 765.

Govinda Dharmana, Thirumala Rao Gurugubelli, Balaga Viswanadham, Babu Bathula, Kisoo Yoo, Novel In-Situ Fabrication of Fe-Doped Zinc Oxide/Tin Sulfide Heterostructures for Visible-Light-Driven Photocatalytic Degradation of Methylene Blue, Journal of Chemistry 2023 (2023) 1407395.

G. Thirumala Rao, B. Babu, R. Joyce Stella, V. Pushpa Manjari, Ch. Venkata Reddy, Jaesool Shim, R.V.S.S.N. Ravikumar, Synthesis and characterization of VO2+ doped ZnO-CdS composite nanopowder, Journal of Molecular Structure 1081 (2015) 254-259.

G. Thirumala Rao, B. Babu, R. Joyce Stella, V. Pushpa Manjari, R.V.S.S.N. Ravikumar, Spectral investigations on undoped and Cu2+ doped ZnO-CdS composite nanopowder, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 139 (2015) 86-93.

G. Thirumala Rao, R. Joyce Stella, B. Babu, K. Ravindranadh, Ch. Venkata Reddy, Jaesool Shim, R.V.S.S.N. Ravikumar, Structural, optical and magnetic properties of Mn2+-doped ZnO-CdS composite nanopowder, Materials Science and Engineering B 201 (2015) 72–78.

G. Thirumala Rao, B. Babu, R.V.S.S.N. Ravikumar, Jaesool Shim, Ch. Venkata Reddy, Structural and optical properties of Fe-doped SnO2 quantum dots, Materials Research Express 4 (2017) 125021.

G. Thirumala Rao, R. V. S. S. N. Ravikumar, N. Bakthavatchala Reddy, Grigory V. Zyryanov, Hydrothermal synthesis of ZnO nanopowder and its photocatalytic performance under UV and visible light irradiation, AIP Conference Proceedings 2063 (2019) 040044.

G. Thirumala Rao, R.V.S.S.N. Ravikumar, N. Bakthavatchala Reddy, Grigory V. Zyryanov, Synthesis of Co2+ doped ZnO-CdS composite nanopowder and its enhanced photocatalytic performance under visible light irradiation, AIP Conference Proceedings 2063 (2019) 040045.

G. Thirumala Rao, R.V.S.S.N. Ravikumar, N. Bakthavatchala Reddy, Grigory V. Zyryanov, Investigation on synthesis, structural and optical properties of CdS nanoparticles, AIP Conference Proceedings 2280 (2020) 040038.

G. Thirumala Rao, R.V.S.S.N. Ravikumar, Novel Fe-doped ZnO-CdS nanocomposite with enhanced visible light-driven photocatalytic performance, Materials Research Innovations 25 (2021) 215-220.

Thirumala Rao Gurugubelli, Bathula Babu, Kisoo Yoo, Structural, Optical, and Magnetic Properties of Cobalt-Doped ZnAl2O4 Nanosheets Prepared by Hydrothermal Synthesis, Energies 14 (2021) 2869.

Thirumala Rao Gurugubelli, Bathula Babu, Jonghoon Kim, Kisoo Yoo, Hydrothermal synthesis of Fe?doped ZnAl2O4 nanosheets: bandgap engineering and room temperature ferromagnetism, Chemical Papers 75 (2021) 6407-6416.

Thirumala Rao Gurugubelli, R.V.S.S.N. Ravikumar, Ravindranadh Koutavarapu, Structural, optical, and luminescence properties of Ni2+-doped ZnO–CdS nanocomposite: synthesis and investigations for green light emission, Chemical Papers 76 (2022) 557–566.

Vinod Babu Chintada, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu, An investigation over the effect of the reducing agent on the properties of the ZnO-reinforced Ni–P coatings, Journal of Materials Science: Materials in Electronics 33 (2022) 950-958.

Thirumala Rao Gurugubelli, R.V.S.S.N. Ravikumar, Ravindranadh Koutavarapu, Enhanced photocatalytic activity of ZnO-CdS composite nanostructures towards the degradation of Rhodamine B under sun light, Catalysts 12 (2022) 84.

Thirumala Rao Gurugubelli, Bathula Babu, Jonghoon Kim, Kisoo Yoo, Efficient photoelectrochemical water oxidation and electrochemical supercapacitor performance of ZnAl2O4 hexagonal microstructures, Materials Letters 313 (2022) 131812.

Thirumala Rao Gurugubelli, R.V.S.S.N. Ravikumar, Ravindranadh Koutavarapu, Structural, optical, and photoluminescence properties of Cr3+ ions-doped ZnO-CdS nanocomposite: Synthesis and investigations for yellow emission, Journal of Electronic Materials 51 (2022) 1876–1883.

Vinod Babu Chintada, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu, The impact of surfactants on the properties of electroless Ni–P–SiC coatings, Materials Chemistry and Physics 291 (2022) 126682.

Lakshmiprasad Maddi, Thirumala Rao Gurugubelli, Bathula Babu, Kisoo Yoo, Effect of Cu2+ doping on the structural and optical properties of ZnAl2O4 nanosheets, Chemical Papers 77 (2023) 241-248.

Lakshmiprasad Maddi, Khidhirbrahmendra Vinukonda, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu, One-step in-situ hydrothermal fabrication of Cobalt-doped ZnO/CdS nanosheets for optoelectronic applications, Electronics 12 (2023) 1245.

Santhosh Kumar Nadikatla, Vinod Babu Chintada, Thirumala Rao Gurugubelli, Ravindranadh Koutavarapu, Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production, Molecules 28 (2023) 4277.

Dhilleswara Rao Vaddi, Khidhirbrahmendra Vinukonda, Ranjit Kumar Patnala, Yuvaraju Kanithi, Thirumala Rao Gurugubelli, Jaehyun Bae, Ravindranadh Koutavarapu, Dong-Yeon Lee, Jaesool Shim, Effect of Yttrium Doping on the Crystal Structure, Optical, and Photocatalytic Properties of Hydrothermally Synthesized ZnO Nanorods, Materials Science and Engineering B 296 (2023) 116664.