Dr. Gil Nonato C. Santos

Fabrication and Characterization of

Nanomaterials for

Nanotechnology Applications

DLSU Solid State

Physics Research Laboratory

How to How to do do NanomaterialsNanomaterialscreatively?creatively?creatively?creatively?

“INNERSPACE”- Dennis Quaid

“Honey I Shrunk the Kids” – Rick Moranis

Our Recipe: Semiconducting Oxide

PowderWe want to produce Semiconducting

Oxide Nanomaterials!Oxide Nanomaterials!

Dr. Z.L. Wang (UAPT PI)

Material Science & Engineering

Georgia Institute of Technology

Our Technique: HVPG

• Horizontal Vapor Phase Growth Technique

MOTIVATION

• Grow high purity materials

• Source material is powder of any

form

• Greater quantity with less source

materialmaterial

• No gas molecules in between

• Versatility in composition of deposit

• Produces unusual microstructures

• Eliminate pollutants

What will I do with the heater?

Let’s Cook: Our Recipe and Ingredients

• A small amount of Semiconducting Oxide powder was loaded in a close-end quartz tube

• Was attached to the High Vacuum System for sealing at 10-6 Torr

• Let’s Bake!• The sealed quartz tube

was placed in a tube furnace set with the desired growth temperature

900ºC 700ºC 400ºC

• Temperature and

Deposition Time

Dependence of the

Geometrical Properties

of Tin Oxide

Nanostructures• Gil Nonato C. Santos, Arnel A.

Salvador, Reuben V. QuirogaSalvador, Reuben V. Quiroga

International Journal of Scientific &

Engineering Research Volume 2, Issue

10, October-2011

ISSN 2229-5518

Synthesized SnO2 Nanomaterial via the HVPG

Bed of Nanowires Noodle Nanowires(Oishi)

Bon Jovi’s other version of Bed of Roses

Nanobelts

• Nanobelts are have a well-defined geometrical shape and side surfaces. • Typical widths is in the range of 50 to 300 nm • Thicknesses are 10 to 30 nm.

Physics Society of the Philippines

(Samahang Pisika ng Pilipinas)

• The Nanobelts were

featured in the first

Physics Journal in

the Philippinesthe Philippines

Different growth temperature produced remarkable structures

Do you like vegetables?

Nanocauliflower

Nanobolo (Machete) (2nd Prize –photo micrograph contest

SnO2 Nanomaterial on Si Substrate

• Silicon is an effective substrate for SnO2 nanomaterial. • Nanorods and nanobelts are grown without nanoparticles.

Finalist – DOST MS Thesis - Physics

Best Paper and Oral Presentation Award - MICROSPHIL

Nanobelt for gas flow sensors

Dr. Z.L. Wang (UAPT PI)

Material Science & Engineering

Georgia Institute of Technology

Two-probe measurements of electric conductance of

Nanobelts under ambient temperature

The electric conductance of the nanobelt depends on

the type and amount of molecules adsorbed on its

surface

High Resolution SEM image of the SnO2 Nanomaterial

• The surface of the SnO2 nanomaterial is porose and composed of many uniform crystalline grains.

• It suggests that this nanomaterial is suitable for suitable for fabricating gas sensors because of the porosity over large surface.

Photoluminescence of SnO2 Nanomaterials

• SnO2 Nanomaterial was excited

with a UV lamp

• The luminescence was a blue visible

light emission.

2009 International Sustainable World Energy,

Engineering, and Environment Project

(I-SWEEEP) Olympiad in Houston, Texas

Simon Anthony Lorenzo and Hannah

Carize Sangalang won a silver medal for

the Philippines with their project

entitled “Development of Carbon

Nanomaterial as an Electrode Voltage Nanomaterial as an Electrode Voltage

Source” in the Senior Engineering

category

Carissa May Enriquez and Kevin Bryan Jose

received an Honorable Mention award for their

project “Development of an Organic Battery

Using P-Toluene Polypyrrole as a Potential

Electrode Voltage Source and Coconut (Cocos

nucifera) Vinegar as Electrolyte

A – conducting polymer

B – SnO2 Nanomaterial on Si

C – Glass

E - PCB

ZnO Nanomaterials – A. Ladines

Presented at ICMAT 2009 Singapore

3rd Place Photomicrography – Microsphil

Finalist- DOST MS Thesis – Materials Science

CdO Nanomaterials – L. Tan

Carbon nanowires, rods,

and tubes – J. Feraer

Synthesis and Characterization of In2O3

NanomaterialsGwen B. Castillon, Gil Nonato C. Santos

3rd Best Paper and Oral Presentation -

Microsphil

International Journal of Scientific & Engineering

Research, Volume 3, Issue 2, February-2012

ISSN 2229-5518

ZnS Nanowindmill and Nanorods –

K. Suycano

Synthesis of α-Fe2O3

Nanomaterials on

Silicon Substrate

Using Horizontal Vapor

Phase Growth

Technique Technique

• Lim, T. de los Reyes, R., D.,

Castillon, G., Ladines, A.

Santos, G. N. C., Quiroga, R. V.

DLSU Solid State Physics

Research Laboratory

Fabrication of Gallium

Nitride Nanomaterials

Grown by Horizontal

Unseeded Vapor

Phase

Growth TechniqueGrowth Technique

• Anciado, R. R., Alcantara, N., Castillon, G.,

Ladines, A., de los Reyes, R.

Santos, G. N. C., Quiroga, R. V.

DLSU Solid State Physics Department

Synthesis and

Characterization

of TiO2

Nanomaterials

on

Silicon Substrate

by Modified

Silicon Substrate

by Modified

Horizontal

Vapor Phase

Growth

Technique• Abrasaldo, P. M. B., (BPI DOST AWARDEE)

Castillon, G., Ladines, A., de los Reyes, R.

Santos, G. N. C., Quiroga, R. V.

Synthesis and

Photoluminescence of

Gold Nanostructures

Using Horizontal

Vapor Phase Growth Vapor Phase Growth

Technique

• Kahn, D., Ladines, A., Castillon, G., de

los Reyes, R.,

Santos, G. N. C., Quiroga, R. V.

Preliminary THz-TDS

Measurements of

Polypyrrole with Varying

M of Na (p-TS) Composite

Nanomaterial

Mazano, C., Manzano, R., Mazano, C., Manzano, R.,

Santos, G. N. C., Quiroga, R.

DLSU Solid State Physics

Laboratory

Takage, Que, C., Furuya, T.,

Yamamoto, K., Tani, M.

Research Center for

Development

of Far-Infrared Region,

University of Fukui

The Effect of Growth

Temperature, Dwell Time, and

Orientation of the Thermal

Gradient to the Gravitational

Field in the Synthesis of CdS

Nanomaterials using the Vapor

Phase Crystal Growth

Technique Eduardo B. Tibayan Jr., Gil Nonato C.

Finalist- DOST MS Thesis – Physics

Technique Eduardo B. Tibayan Jr., Gil Nonato C.

Santos, Reuben V. Quiroga

International Journal of Scientific & Engineering

ResearchVolume 2, Issue 10, October-2011

ISSN 2229-5518

Synthesis and Characterization

of Superconducting

Magnesium Diboride MgB2

Nanomaterials through

Horizontal Vapor Phase Crystal

Growth Technique

Renante C. Embalzado, Gil Nonato C. Santos,

Reuben V. QuirogaReuben V. Quiroga

UP NIP CMPL Lab

International Journal of Scientific &

Engineering Research, Volume 3, Issue 2,

February-2012

ISSN 2229-5518

Characterization of

Silver

Nanomaterials,

Synthesized by the

Horizontal Vapor

Phase Crystal

Growth Technique

for Antimicrobial for Antimicrobial

Purposes

Wilfred Espulgar, Gil Nonato C. Santos

International Journal of Scientific &

Engineering Research Volume 2, Issue 8,

August-2011 1 ISSN 2229-5518

Synthesis and

Characterization of C-Ag

Composite Nanomaterial

for Battery Electrode

Application

Ruby Michelle N. Buot,

Gil Nonato C. Santos

International Journal of Scientific &

Engineering Research Volume 3, Issue Engineering Research Volume 3, Issue

2, February-2012

ISSN 2229-5518

• Cadmium Selenide

Quantum Dots

Synthesized by

HVPC Growth

Technique for

Sensing Copper ion 2000

4000

6000

Counts

Se

Se

Au

Au

AuCd

Cd

Cd Au SeAuAu

SeAu

Au

Elmt Spect. Element

Atomic

Type % %

Se L ED 50.53 59.25

Cd L ED 49.47 40.75

Total 100.00

100.00

A B C

D E

PL Intensity (arb. Units)

Gold Medal – MS Thesis

Sensing Copper ion

Concentrations• Arra C. Quitaneg, Gil Nonato

C. Santos

0 5 10 15 20Energy (keV)

0

Cd Au Se Se Au

Wavelength (nm)

International Journal of Scientific & Engineering

Research Volume 2, Issue 12, December 2011

ISSN 2229-5518

• Fabrication and

Characterization of Dye-

Sensitized Solar Cell

(DSSC) Using

Nanostructured TiO2 as

Photoelectrode• Abel F. Ole, GIL NONATO C.

SANTOSSANTOS

• Fabrication and

Characterization of Tin

Oxide (SnO2)

Nanomaterials as

Carbon Dioxide (CO2)

Gas SensorGas Sensor• FAITH CELESTE C. BANCOLO, GIL

NONATO C. SANTOS

• Bi2S3 Nanowires

Fabricated via

Horizontal Vapor Phase

Crystal (HVPC) Growth

Technique for

Photosensor

Application• BHEIM M. LLONA, GIL NONATO C. • BHEIM M. LLONA, GIL NONATO C.

SANTOS

• Synthesis and

Characterization of Iron

Oxide Nanomaterials

using Horizontal Vapor

Phase Crystal (HVPC)

Growth Technique for Growth Technique for

Glucose Sensing

Application• DONNA MARIE B. DE MESA, GIL

NONATO C. SANTOS

CATALYTIC

PERFORMANCE OF

AHYDROGEN FUEL CELL

WITH PLATINUM

NANOMATERIALS –

COATED GAS DIFFUSION

LAYER

RICHARD C. MONSERRAT,

Gil Nonato C. Santos

What we are doing right now

• Characterize the other properties of Nanomaterials

• Understand the growth behavior and characteristics of

Nanomaterials

• Device Fabrication of Nanomaterials

• Environmental Nanomaterial Sensors (Challenge• Environmental Nanomaterial Sensors (Challenge

Grant Recipient)

• Solar Nanomaterials (AKI Project)

• Bio Nanomaterials (Interdisciplinary Research –for

funding)

• Nanocoatings (DOST PCIEERD)

Fabrication and

Characterization of

SnO2 Nanomaterials

for AntiHeat and Anti

Microbial Applications

Francisco V. Moreno Jr., Gil Nonato Santos

Solid State Physics

SEM/EDX Facility

Solid State Physics Thermal and

Electrical Characterization Facility

Solid State Physics High Vacuum

System and LN2 Facility

Solid State Physics

High Temperature Furnace

and XRD Facility

Solid State Physics Fabrication Lab

Solid State Physics

Optical Characterization Facility