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Abstrak :
ABSTRACT
Pada penelitian ini dilaporkan pengukuran celah pita dan produksi asam format melalui reaksi fotoreduksi bikarbonat dengan menggunakan katalis berbagai morfologi nanopartikel Au (Au nanooctahedrals, Au nanocubes, dan Au nanorods) yang diintegrasikan dengan TiO2. Pengukuran celah pita Au-TiO2 nanohibrid menunjukan bahwa tidak ada perubahan nilai celah pita dari TiO2 saat diintegrasikan dengan nanopartikel Au dengan berbagai morfologi. Selanjutnya dilakukan penyinaran dengan menggunakan solar simulator, format terbentuk sebanyak 1,8083 mmol/g katalis dengan menggunakan TiO2 saja. Produksi format bertambah secara signifikan saat diintegrasikan dengan nanopartikel Au. Au nanorods -TiO2 (5,1359 mmol/g katalis) memiliki aktivitas fotokatalitik paling tinggi dibandingkan dengan Au nanocubes-TiO 2 (3,1896 mmol/g katalis) dan Au nanooctahedrals -TiO2 (2,36063 mmol/ g katalis). Peningkatan produksi asam format diakibatkan terdapatnya efek sinergistik dari sifat plasmonik nanopartikel emas pada sinar tampak dan aktivitas hole scavenging dari gliserol pada permukaan Au-TiO2 nanohibrid.

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ABSTRACT
In this research, we report the band gap measurement and production of formic acid through photoreduction of bicarbonate in presence of TiO2 with various morphologies of gold nanoparticles (gold nanooctahedral, gold nanocubes, and gold nanorods) nanohybrids. The band gap measurement shows no effect when TiO2 is being integrated with gold nanoparticles. Under solar simulator, the productivity of formate production was 1.8083 mmol/ g cat using TiO2 alone. The formate production was enhanced by integrating gold nanoparticles with TiO2. Au nanorods-TiO2 has the most remarkable enhancement (5.1359 mmol/g cat) compares to Au nanocubes-TiO2 (3.1986 mmol/ g cat) and Au nanooctahedrals-TiO2 (2.36064 mmol/g cat). The improvement in formate production in visible light is attributed to the synergistic effects of plasmonic properties of gold nanoparticles in the visible wavelength range and hole scavenging activities of glycerol from Au-TiO2 nanohybrids surface.

Abstrak :
Akrilamida merupakan senyawa neurotoksin yang berpotensi menyebabkakan penyakit kanker yang terbentuk akibat pemaparan suhu yang tinggi saat proses memasak pada makanan dan beresiko pada kesehatan manusia. Penelitian ini akan menghasilkan sensor akrilamida yang sensitif dan selektif berdasarkan penurunan arus HbFe3+ menjadi HbFe2+ hasil interaksi akrilamida dengan hemoglobin. Sensor akan memodifikasikan hemoglobin pada permukaan Fe3O4@Au yang disintesis menggunakan metode ko-presipitasi dan dikarakterisasi menggunakan FTIR, TEM, SEM-EDX, dan XRD. Biosensor ini akan menggunakan elektroda screen-printed carbon electrode (SPCE) karena praktis, memungkinkan biomolekul untuk immobilisasi ke permukaan elektroda, dan selektif. Studi komputasi melalui simulasi docking menunjukan pH 7.4 pada suhu 310 K merupakan kondisi optimum Hb untuk berinteraksi dengan akrilamida berdasarkan menghasilkan ΔGbinding -2.8934 pada binding site α N-Terminal Valin dan nilai Pkd sebesar 4.8755x10-4, hal ini divalidasi oleh studi elektrokimia diperoleh ABS pH 7.4 0,1 M dan konsentrasi Hb 2 mg / l mealalui pengukuran menggunakan voltametri siklik (CV) menghasilkan kondisi yang optimum dengan rentang potensial -1.0 V – 1.0 V dan scan rate 50 mV/s. Pengukuran standar akrilamida menunjukkan linieritas yang cukup baik (R2 > 0,9794) pada rentang konsentrasi 0.01 μM – 0.09 μM. dengan limit of detection (LOD) sebesar 0.02 μA dan sensitivitas sebesar 276.47 μA/μM. Validasi kadar akrilamida dilakukan menggunakan High Performance Liquid Performance (HPLC) pada sampel kopi bubuk luwak yang juga diukur secara elektrokimia menggunakan CV. Akrilamida dalam sampel kopi luwak menggunakan sensor menunjukkan hasil 4.6 ppm yang mendekati hasil pengukuran dengan HPLC 4.3 ppm. ......Acrylamide is a neurotoxic compound that has the potential to cause cancer which is formed due to exposure to high temperatures during the cooking process on food and is a risk to human health. This research will produce a sensitive and selective acrylamide sensor based on the reduction of current HbFe3+ to HbFe2+ as a result of the interaction of acrylamide with hemoglobin. The sensor will modify the hemoglobin on the surface of Fe3O4@ Au which was synthesized using the co-precipitation method and characterized using FTIR, TEM, SEM-EDX, and XRD. Fe3O4 is used to remove the supernatant of acrylamide in a solution. This biosensor will be using a screen-printed carbon electrode (SPCE) electrode because it is single-use, allows biomolecules to be immobilized to the electrode surface, and selective. Computational studies through docking simulations show pH 7.4 at 310 K is the optimum condition for Hb to interact with acrylamide with ΔGbinding value -2.8934 at the α N-Valine Terminal binding site and a Pkd value is 4.8755x10-4, this is validated by electrochemical studies were ABS pH 7.4 0.1 M and a Hb concentration of 2 mg / l was obtained through measurement using cyclic voltammetry (CV) resulting in optimum conditions with a potential range of -1.0 V - 1.0 V and a scan rate of 50 mV / s. The acrylamide standard measurement showed fairly good linearity (R2> 0.9794) at a concentration of 0.01 μM - 0.09 μM with a limit of detection (LOD) is 0.02 μA and the sensitivity of the sensor is 276.47 μA / μM. Validation of acrylamide levels was carried out using High-Performance Liquid Performance (HPLC) on Luwak coffee ground coffee samples which were also measured electrochemically using CV.

Abstrak :
Penelitian ini telah berhasil mengembangkan metode green synthesis untuk mensintesis nanopartikel Au, SiO2, Al2O3, SiO2/Al2O3, dan SiO2/Al2O3 termodifikasi nanopartikel Au menggunakan ekstrak daun mimba Azadirachta indica yang berperan sebagai agen pereduksi, capping agent, dan sumber basa lemah. Spektrofotometer UV-Visible dan FT-IR digunakan untuk mengkarakterisasi nanopartikel Au, SiO2, Al2O3, SiO2/Al2O3, dan SiO2/Al2O3 termodifikasi nanopartikel Au. Karakterisasi menggunakan UV-Visible menunjukkan adanya nanopartikel Au pada ?maks 533-537 nm. Aktivitas katalitik dari SiO2/Al2O3 termodifikasi nanopartikel Au diamati dalam reaksi reduksi 4-Nitrofenol oleh NaBH4. Hasil menunjukkan bahwa aktivitas katalitik dari SiO2/Al2O3 termodifikasi nanopartikel Au lebih baik dibandingkan SiO2/Al2O3. ......This study successfully developed green synthesis method for synthesis of Au nanoparticles, SiO2, Al2O3, SiO2 Al2O3, and Au modified SiO2 Al2O3 using mimba leaves Azadirachta indica as reducing agent, capping agent, dan a base source. UV Visible Spectroscopy and FT IR were used to characterize Au nanoparticles, SiO2, Al2O3, SiO2 Al2O3, dan Au modified SiO2 Al2O3. UV Visible characterization showed appearance of Au nanoparticles at 533 537 nm. Catalytic activity of Au modified SiO2 Al2O3 was studied in 4 Nitrophenol reduction by NaBH4. The study showed that catalytic activity of Au modified SiO2 Al2O3 better than SiO2 Al2O3.

Abstrak :
ABSTRAK
Penggunaan metilen biru sebagai zat pewarna organik dalam berbagai macam industri menjadi perhatian karena tidak terdegradasi secara alami. Pada penelitian ini digunakan metode green synthesis Au/TiO2 dengan ekstrak daun pohpohan (Pilea melastomoides) untuk mendegradasi metilen biru. Ekstrak daun pohpohan (EDP) berperan sebagai pereduksi dan penstabil dalam proses modifikasi Au pada permukaan TiO2. AuNP optimum terbentuk dengan bantuan cahaya natrium pada konsentrasi EDP 0,6% (w/v). Karakterisasi dengan spektrofotometer UV-Vis dan Particle Size Analyzer (PSA) menunjukkan AuNP mempunyai panjang gelombang maksimum (λmax) 538 nm dengan distribusi ukuran partikel 1,1 nm. Karakterisasi XRD dan TEM menunjukkan AuNP memiliki struktur kristal face centered cubic (fcc) dan memiliki diameter partikel rata-rata 1-31 nm dengan bentuk heksagonal. Au/TiO2 dikarakterisasi XRD dan TEM menunjukkan bahwa terdapat AuNP pada permukaan TiO2. Karakterisasi menggunakan UV-Vis DRS menunjukkan bahwa Au/TiO2 memiliki band gap sebesar 2,99 eV pada panjang gelombang 541 nm. Degradasi metilen biru diamati menggunakan radiasi lampu natrium selama 60 menit yang selanjutnya dikarakterisasi menggunakan spektrofotometer UV-Vis. Persentase degradasi dari TiO2 dan Au/TiO2 terhadap metilen biru adalah 26,32% dan 82,59%. Dalam studi kinetika reaksi didapatkan bahwa tetapan laju degradasi mengikuti kinetika orde pertama.

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ABSTRACT
Using methylene blue as the organic dye in so many kinds of industry is become a concern because it doesn?t degraded naturally. In this research, green synthesis method was used for modification Au/TiO2 using pohpohan (Pilea melastomoides) leaf extract for degrade the methylene blue. Pohpohan leaf extract (EDP) was act as reductor and stabilizer in modification AuNPs on TiO2 surface. The optimum condition of AuNPs was synthesized using natrium light with the concentration of EDP 0,6% (w/v). Characterization using UV-Vis Spectrophotometer and Particle Size Analyzer (PSA) shows AuNPs has maximum wavelength (λmax) 538 nm with size particle distribution about 1,1 nm. Characterization using XRD and TEM shows AuNPs has face centered cubic (fcc) crystal structure and has the average diameter of particle about 1-31 nm with hexagonal shape. Au/TiO2 was characterized with XRD and TEM, shows that there are AuNPs on the TiO2 surface. Characterization using UV-Vis DRS shows that Au/TiO2 has band gap value about 2,99 eV at wavelength 541 nm. Methylene blue degradation was observed using natrium lamp radiation for 60 minutes then characterizing using UV-Vis spectrophotometer. Degradation percentage of TiO2 and Au/TiO2 towards methylene blue is 26,32% and 82,5%. In study of reaction kinetics shows that the degradation followed the first order kinetics.

Abstrak :
Penggunaan metilen biru sebagai zat pewarna organik dalam berbagai jenis industri menjadi perhatian karena tidak terdegradasi secara alami. Pada penelitian ini digunakan metode green synthesis CdO/Au dengan ekstrak biji petai Parkia speciosa untuk mendegradasi metilen biru. Ekstrak biji petai EBP berperan sebagai pereduksi dan penstabil dalam proses doping Au pada nanopartikel CdO. AuNP optimum terbentuk dengan bantuan cahaya ruang pada konsentrasi EBP 0,03 w/v. Karakterisasi dengan spektrofotometer UV-Vis dan Particle Size Analyzer PSA menunjukkan AuNP mempunyai panjang gelombang maksimum ?max 531 nm dengan distribusi ukuran partikel 26,89 nm. Karakterisasi XRD dan TEM menunjukkan AuNP memiliki struktur kristal Face Centered Cubic FCC dan memiliki diameter partikel rata-rata 7-20 nm dengan bentuk bulat. CdO/Au dikarakterisasi XRD dan SEM-EDS menunjukkan bahwa terdapat AuNP yang terdoping dalam CdO. Karakterisasi menggunakan UV-Vis DRS menunjukkan bahwa CdO/Au NPs memiliki band gap sebesar 2,46 eV pada panjang gelombang 541 nm. Degradasi metilen biru diamati menggunakan radiasi lampu natrium selama 60 menit yang selanjutnya dikarakterisasi menggunakan spektrofotometer UV-Vis. Persentase degradasi dari CdO dan CdO/Au terhadap metilen biru adalah 18,32 dan 73,79 . Dalam studi kinetika reaksi didapatkan bahwa tetapan laju degradasi mengikuti kinetika orde kedua. ......Using methylene blue as the organic dye in so many kinds of industry is become a concern because it doesn rsquo t degraded naturally. In this research, green synthesis method was used for Au doped CdO NPs using Parkia speciosa seed extract for degrade the methylene blue. Parkia speciosa seed extract EBP was act as reductor and stabilizer in modification AuNPs on CdO nanoparticles. The optimum condition of AuNPs was synthesized using natrium light with the concentration of EBP 0,03 w v. Characterization using UV Vis Spectrophotometer and Particle Size Analyzer PSA shows AuNPs has maximum wavelength max 531 nm with size particle distribution about 26.89 nm. Characterization using XRD and TEM shows AuNPs has Face Centered Cubic FCC crystal structure and has the average diameter of particle about 26,89 nm with sphere shape. CdO Au was characterized with XRD and SEM EDS, shows that there are AuNPs on the CdO NPs. Characterization using UV Vis DRS shows that CdO Au has band gap value about 2,46 eV at wavelength 541 nm. Methylene blue degradation was observed using natrium lamp radiation for 60 minutes then characterizing using UV Vis spectrophotometer. Degradation percentage of CdO and CdO Au towards methylene blue is 18,32 and 73,79. In study of reaction kinetics shows that the degradation followed the second order kinetics.

Abstrak :
[Senyawa bahan alam yang mengandung banyak senyawa pereduksi dan gugus-gugus organik kurang termanfaatkan dengan baik untuk sintesis nanopartikel. Ekstrak bawang putih (EBP) (allium sativum L) dapat dimanfaatkan sebagai reaktan dalam pembuatan nanopartikel Au (AuNP). EBP dapat mereduksi dan menstabilkan AuNP. AuNP di karakterisasi menggunakan spektrofotometer UV-Vis dan TEM sedangkan EBP dikarakterisasi menggunakan FTIR, dan LCMS. AuNP optimum yang di karakterisasi menggunakan TEM memiliki ukuran 15 nm dan memiliki kestabilan hingga 33 hari. Berdasarkan hasil FTIR dan LCMS, senyawa aktif yang diduga berperan sebagai agen pereduksi adalah asam askorbat (vitamin C), gula bebas seperti, surosa, glukosa, dan fruktosa, allin, alicin, dan s-alilsitein dan senyawa aktif yang diduga berperan sebagai agen penstabil adalah -glutamilsistein, -glutamil-s-alilsistein, -glutamil phenil alanin, s-alil mercaptosistein, metil alil tiosulfonat, dan prophenil alil tiosulfonat. AuNP yang terbentuk dapat dimanfaatkan sebagai pendeteksi terhadap formalin dan melamin pada kondisi pH 3,6.

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Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6.;Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6.;Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6.;Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6.;Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6., Compounds of natural product that many contain reducing compounds and organic groups are less well utilized for the synthesis of nanoparticles. Garlic exstract (EBP) (allium sativum L) can be used as a reactant in the manufacture of nanoparticles Au (AuNP). EBP can reduce dan stabilize AuNP. AuNP characterized using spectrophotometer UV-Vis and TEM while EBP characterized using FTIR and LCMS. AuNP optimum that characterized by TEM has size 15 nm and has stability up to 33 days. Based on the results of FTIR and LCMS, the active compounds are expected have role as reducing agent is ascorbic acid (vitamin C), free sugar such as, sukrose, glucose, and fructose, allin, Alicin, and s-alilsitein and the active compounds are thought to act as a stabilizing agent is γ-glutamilsistein, γ-glutamyl-s-alilsistein, γ-glutamyl phenil alanine, s-allyl mercaptosistein, allyl methyl tiosulfonat, and allyl prophenil tiosulfonat. Aunp formed can be used as a detector of the formaldehyde and melamine at pH 3.6.]

Abstrak :
Limbah pewarna tekstil merupakan salah satu penyumbang terbesar pencemaran air di dunia. Limbah pewarna tekstil bersifat cukup stabil dan sulit didegradasi pada ekosistem perairan. Salah satu teknik yang dapat mengatasi limbah pewarna tekstil adalah teknik Advanced Oxidation Process (AOPs), yang memanfaatkan semikonduktor secara reaksi reduksi dan oksidasi limbah pewarna tekstil. Pada penelitian ini dilakukan sintesis bismuth titanate (BTO) sebagai semikonduktor dan didukung oleh nanopartikel logam mulia Ag, Au, dan nanoalloy AuAg untuk memaksimalkan aktivitas fotodegradasi senyawa metilen biru. Sintesis bismuth titanate dilakukan dengan metode hidrotermal selama 24 jam pada 200 berhasil dilakukan begitupun pada sintesis nanopartikel Ag dan Au serta nanoalloy AuAg menggunakan metode reduksi kimia dengan surfaktan CTAB. Karakterisasi yang dilakukan pada penelitian ini menggunakan instrumen XRD (BTO), XRF (BTO), BET (BTO), UV-DRS (BTO dan nanokomposit), dan UV-Vis spektrofotometer (Nanopartikel). Aktivitas fotodegradasi dilakukan pada lampu cahaya tampak 400W dan dianalisis menggunakan UV-Vis. Berdasarkan hasil XRD, BTO memiliki fasa kristal orthorhombik. Pada karakterisasi BET menunjukkan BTO memiliki luas permukaan sebesar 22,585 m2/gr. Untuk hasil UV-Vis nanopartikel menunjukkan puncak absorbansi maksimum pada 410 nm (Ag), 465 nm (AuAg), dan 520 nm (Au). Dari hasil karakterisasi UV-DRS, diketahui bahwa nilai celah pita dari bismuth titanate sebesar 2,65 eV dan 2,54 eV untuk BTO-Au, 2,65 eV untuk BTO-AuAg, dan 2,70 eV untuk BTO-Ag. Dari hasil aktivitas fotodegradasi metilen biru terhadap BTO, 29.5 % untuk BTO, 55,7% untuk BTO-Au, 75,5% untuk BTO-Ag, dan 48,4% untuk BTO-AuAg. Hal tersebut menandakan bahwa terdapat pengaruh penambahan nanopartikel pada semikonduktor yang dapat mempengaruhi tingkat aktivitas fotokatalitik. ......Textile dye waste is one of the biggest contributors to water pollution in the world. Textile dye waste is quite stable and difficult to degrade in aquatic ecosystems. One technique that can overcome textile dye waste is the Advanced Oxidation Process (AOPs) technique, which utilizes semiconductors by reduction and oxidation reactions of textile dye waste. In this study, Bismuth Titanate (BTO) have a role as semiconductor material and supported by metal nanoparticle Ag, Au, and Au-Ag nanoalloy to maximize photodegradation activity of blue methylene compound. Bismuth Titanate Synthesis was performed with hydrothermal method for 24 hours in 200 and nanoparticle synthesis of Ag, Au, and Au-Ag nanoalloy were performed by chemical reduction method with CTAB surfactant as stabilizer. Characterization was performed with XRD (BTO), XRF (BTO), BET (BTO), UV-DRS (BTO and nanocomposite), and UV-Vis (nanoparticle) spectrophotometer instrument. Photodegradation activity was performed in 400 W visible lamp irradiation and measured by UV-Vis Spectrophotometer. Based on XRD characterization, crystal phase of BTO is orthorhombic phase. Characterization with BET instrument showed that surface area of BTO is 22,585 m2/gr. Characterization with UV-Vis showed that maximum peak of nanoparticle was occurred at 410 nm (Ag), 465 nm (AuAg), and 520 nm (Au). Based on UV-DRS characterization, band gap value is 2,65 eV (BTO), 2,54 eV (BTO-Au), 2,65 eV (BTO-AuAg), and 2,70 eV (BTO-Ag). Photodegradation activity of BTO, BTO-Au, BTO-Ag, and BTO-AuAg is 29.5%; 55.7%; 75.5%, and 48.4%. Based on photodegradation activity analysis, nanoparticle has effect against photocatalysis reaction.